Cable TV Spectrum Analyzer

Features & Benefits

In-service RF Testing From Tektronix

• In-service Measurements Minimize Program Interruption, Reduce Cost of Acquiring Performance Data - Compatible with NTSC and PAL Systems
• Digital Channel Measurements Are Ready When You Are - Characterize Averaged Power; Check Noise and Distortions that Can Worsen BER - Applicable to QAM, QPSK, QPR, VSB and OFDM Signals
• Addresses All FCC Proof of Performance Measurements
• Cable TV Measurements Enhance Measurement Repeatability and Reduce Technician Training Time
• Carrier Level, Carrier Frequency, Carrier-to-noise, Hum/LFD and Other Key Measurements Execute Automatically from Easy-to-use, On-screen Menu
• Unattended and Remote Measurement Modes Reduce Personnel Requirements in the Field
• 75 Ohm Input with Quick-change F and BNC Connectors Reduce Repair Costs and Minimize Down Time
• Enhanced Troubleshooting Power with Built-in Preamplifier, Audio and Video Demodulation - All Standard
• Frequency Coverage to 2.15 GHz, with Opt. 50 and 75, Can View Downconverted Satellite Signals (L-Band)
• Includes Windows-compatible PC Software for Programmed Measurement Configuration, Data Collection, Measurement Results Printouts, Limits Checking, Alarming and Control of a Locally or Remotely-located 2715
• High Portability, On-board Nonvolatile Memory, Four Digital Displays for Spectral Display Storage and Comparison, Plus True Analog, Continuous Gray Scale Display for Detecting Low Level Beats and Spurs Amidst Noise and Active Video

Applications

• In-service Proof-of-performance Tests
• Digital Service Installation and Troubleshooting
• Ingress Detection

Digital and Analog Testing for Hybrid Networks

The 2715 Cable TV Spectrum Analyzer now includes automated tests for both analog and digitally-modulated channels. When you are ready to begin installing digital transmission of video, data or voice, the 2715 is ready to help. After setting up the 2715 with the new, companion Cable TV RF Measurement Software for Windows, the analyzer automatically determines the correct measurements for each channel type - analog, digital, FM or pilot.

Dependable, In-service Analog Carrier Measurements at An Affordable Price

Now you can make more proof of performance and other cable system measurements without disruption of service to subscribers. And you can minimize the inconvenience of making measurements at the output of set-top converters. The 2715 provides accurate and automated measurement of carrier-to-noise, in-channel response and coherent distortion signals as well as carrier levels, frequencies and more . . . without removal of video carriers or modulation. In-service measurement of CTB requires an unoccupied channel adjacent to the test channel.

Characterize Your Digital Channels

Channel averaged power, noise and distortions on digitally modulated channels can all be measured by the 2715. It's important to understand the performance of each of the digital channels in your system as well as their interaction with your analog channels. Both broadband random noise-like distortions and coherent distortions - plus noise - can be measured. They all can degrade the bit-error-rate behavior of your digital signals. The 2715 includes digital channel averaged power, desired-to-undesired signal power ratio (D/U) and CTB/CSO measurement. You also can verify the spectral occupancy of your digital modulators with an adjacent channel leakage (ACL) measurement. The distortion and noise measurements require a brief removal of the digital signal. You get all this capability in a 23.5 lb., compact, easy-to-carry package . . . at an attractive price. All of the common cable system spectral measurements are built in and menu-selectable including those needed to address field FCC proof of performance requirements. An accompanying Microsoft Windows-compatible PC software package adds measurement configuration, data collection, measurement results printouts, limits checking, alarming and more.

What used to be complicated measurement procedures, even for engineering, are now push-button simple. Technicians can easily perform extensive cable system analysis and data collection in the field, all automatically.

Measurements and data collection can also be done remotely under computer control. Or the 2715 can be left unattended to run automatic measurements and data collection initiated by the built-in real-time clock. Data collected in the field can be transferred from the 2715's memory via an RS-232 or GPIB interface to a PC. The 2715's accompanying Windows PC software package includes easy transfer of data to your choice of Windows-compatible spreadsheet or database programs for customizing analysis or reports.

Quick, Repeatable, Automated Measurements

The 2715 contains the following measurements and capabilities in its cable TV (CATV/APPL) application menu:

Analog Channels:

• Direct channel tuning and automatic positioning of visual and aural carriers
• Visual and aural carrier level and frequency measurement
• Survey of system visual and aural carrier levels and frequencies
• Depth of modulation adjustment and measurement
• Aural carrier FM deviation adjustment and measurement
• Visual carrier-to-noise measurement
• In-channel response measurement
• Hum/low-frequency disturbance measurement
• System frequency response
• View baseband modulation (field and line) and view picture
• Aural carrier demodulation (listen mode)
• Intermodulation distortion measurement (CTB and CSO)
• Cross modulation measurement

Digital Channel Measurements:

(applicable to QAM, QPSK, QPR, 8VSB and OFDM signals)

• Averaged power
• Desired-to-undesired signal power ratio (D/U)
• Adjacent channel leakage (ACL)
• CSO and CTB
• Direct channel tuning and automatic positioning of digital signal
• Survey of system digital channel levels
• System frequency response

Measurements selected from the menu are automatically executed and the results are displayed on the CRT screen. Not only are complex measurements reduced to push-button simplicity for less-experienced spectrum analyzer users, but measurement repeatability is high.

Measurement results can be output to a printer or plotter connected directly to the 2715's interface port. Results can also be automatically stored in the 2715's nonvolatile memory for later transfer to a PC. This, along with high portability, makes the 2715 ideal as an automatic data collection tool in the field for engineers and technicians alike.

A battery pack option makes 2715 measurements and data collection possible even where AC power isn't available.

Pressing the CATV/APPL front panel button brings up the first page of the CATV Measurement Mode menu display.


The second page of the CATV/APPL menu appears when 9 MORE is selected on the first menu page.

More Troubleshooting Help...

In addition to automated measurements, the 2715 also provides analog channel video and aural carrier demodulation. Aural carrier demodulation allows you to listen to the program audio on the selected channel. Similarly, the demodulated video feature allows you to view the video on the currently selected channel (or from a down-converted satellite signal). Also, full-field or individual horizontal line waveforms can be viewed.

All of these features aid positive channel or program identification in the field. They also aid recognition of many system problems.

...And Maintenance Help

Built-in adjustment modes for audio carrier deviation and video depth of modulation assist in day-to-day maintenance of your system. These adjustment modes are conveniently accessible from within the automated FM deviation and depth of modulation measurement routines.

Check Filters, Line Amplifiers, Cables

The 2715's 75 ohm External Tracking Generator (Opt. 05) provides a convenient means of measuring frequency response on key system components. You can also sweep most two-port devices.

The 2715 Capitalizes on PC Power

The Microsoft Windows-compatible software package that accompanies the 2715 runs automated cable TV measurements via an RS-232 or GPIB interface and collects measurement history for tracking system performance.

The software package provides the following capabilities:

Channel table generator - You can create your own channel tuning tables in addition to the standard tables provided. Creating your own custom channel tuning tables is a simple matter of editing one of the standard tables or creating a completely new table by filling in a predefined, on-screen channel-setup form. Your custom tables can then be transferred to the 2715 to be used with its built-in measurement features. Result: data will be consistently taken on all of your system carriers including scrambled channels, aeronautical offsets and nonstandard frequencies.

High-level test sequences - You can configure automatic test sequences from the 2715's built-in measurements. Creating a test sequence is a simple matter of indicating the desired tests in an on-screen setup matrix.

Your test sequences can then be transferred to the 2715 for later execution via front-panel selections or run from a PC situated at another location. This capability allows less experienced technicians to easily execute high-level test sequences that have been defined and loaded into the 2715 by a cable TV system engineer or senior technician.

Additionally, a time of day can be specified for automatic execution of any test sequence. You can also specify the number of times that a test is to be repeated and the interval of time between test repetitions. This allows you to leave the 2715 unattended while it automatically performs its time initiated test procedures and stores results. For example, you can leave the 2715 at a node site overnight or over the weekend for unattended monitoring and data collection.

Labor-saving ancillary features - Detailed or summary current or historical measurement results can be printed directly from the 2715 PC Software or can be copied into another Microsoft Windows-compatible program for report customization.

You can execute tests from a remotely-located 2715 by using the CATV RF Measurements PC Software in conjunction with the Terminal Program that is a standard accessory of the Windows operating system software. You can place the 2715 at a node of another remote site while measurements and data collection are controlled from a centrally located PC. This configuration can significantly reduce the number of field trips necessary to monitor and diagnose system trouble spots. The RF Measurement Software also includes limits checking, alarming and 271X display transfer functions.

General Purpose Capabilities

In addition to its special cable TV features, the 2715 also doubles as a highly capable, general-purpose spectrum analyzer. You get excellent RF performance, a built-in frequency counter, full programmability, enough nonvolatile memory for up to 108 saved displays and 36 front-panel setups, digital and true analog displays, high portability and numerous other features.

Access to the 2715's many capabilities is extremely easy too. The straightforward user interface provides conveniently grouped, dedicated front-panel keys and simple, menu-driven functions. This makes the 2715 very easy to learn and use. The end result is more measurement power in the hands of more people for improved system performance from cable head-end to subscriber terminal.

The demodulated video display aids channel or program identification. It also aids troubleshooting by showing gross picture anomalies, such as the hum bars displayed here.


Measurement conditions and results are clearly displayed on-screen. Text can even be added, to describe measurement location for example.

Characteristics

Figure 1


Figure 2

The following specifications and features apply after a 15­minute warm-up period and after all normalizations, including reference normalizations, have been performed. CATV characteristics represent typical performance and are dependent on general spectrum analyzer specifications. CATV characteristics need not be verified independently providing that all spectrum analyzer specifications are verified.

Cable TV Measurements

Channel Selection -

Visual and aural carriers displayed when channel number is entered or front-panel selected

Tune Configuration: STD, HRC, IRC and custom; configured using 2715 PC software

Channel Range: 0 to 999; configured using 2715 PC software

Frequency Range: 1 MHz to 2.15 GHz; dependent on selected Channel Table

Visual Carrier Frequency -

Measured with internal counter to 1 Hz resolution with accuracy of 5x10^-7 x Carrier Frequency ±10 Hz ±1 Least Significant Digit

Visual-to-aural Carrier Frequency -

Aural carrier measured with internal counter relative to visual carrier

Difference Range: 1 MHz to 10 MHz (depending on selected channel table) for an amplitude difference of ≤30 dB and aural carrier to noise ≥15 dB (300 kHz RBW)

Resolution: 1 Hz

Accuracy: ±15 Hz for visual-to-aural carrier difference ≤8 MHz

Visual Carrier Peak Level -

Absolute peak amplitude measured with preamp off

Amplitude Range: -18 dBmV to +58.8 dBmV for visual carrier to noise ≥30 dB (300 kHz RBW) and total input power ≤+70 dBmV

Frequency Range: 15 MHz to 1015 MHz

Resolution: 0.1 dB

Absolute Accuracy: ±2.5 dB for visual carrier to noise ≥30 dB (300 kHz RBW); for FM signals, carrier to noise ≥33 dB (100 kHz RBW)

Relative Accuracy: ±0.5 dB relative to adjacent channel, ±1.2 dB relative to all others

Visual-to-aural Carrier Level Difference -

Difference Range: 0 to 30 dB for aural carrier to noise ≥15 dB (300 kHz RBW)

Resolution: 0.1 dB

Accuracy: ±0.75 dB for aural carrier to noise ≥15 dB (300 kHz RBW)

Digital Channel Averaged Power -

Averaged amplitude measured with preamp off

Amplitude range: -30 dBmV to +37 dBmV (multichannel) or -30 dBmV to +52 dBmV (preselected)

Resolution: 0.1 dB

Absolute accuracy: ±2.5 dB

Carrier to Noise -

Default noise floor is a normalized 4 MHz bandwidth measured relative to the visual carrier peak

Range and Accuracy: See Figure 1

Resolution: 0.3 dB

Gated, in-service measurement is in-band; non-gated, in-service measurement is at guard band below channel boundary

Digital Channel Desired to Undesired Ratio -

Channel averaged power is divided by total noise plus distortion power in the channel

Range and Accuracy: See Figure 2

Resolution: 0.3 dB

Modulation Depth -

% AM measured from sync tip to lowest white level in 10 sweeps (VITS line used if defined in channel table)

AM Range: 50% to 95%

Resolution: 0.1%

Accuracy: ±2% for visual carrier to noise ≥40 dB (300 kHz RBW)

Figure 3


Figure 4


Figure 5


Figure 6

Hum/Low-frequency Disturbance -

Power line frequency measured on an unmodulated visual carrier and low frequency disturbance measured on the modulated carrier

AM Range: 1% to 10% peak-to-peak

Resolution: 0.1%

Accuracy: ±1% for hum ≤5% and visual carrier to noise ≥25 dB (300 kHz RBW); ±2% for hum <10% and visual carrier to noise ≥25 dB (300 kHz RBW)

Frequency Response -

For fixed-amplitude scrambling or no scrambling, system amplitude variations (flatness) are displayed relative to a reference trace stored during frequency-response reference setup

Range: 5 dB/div

Resolution: 0.2 dB

Flatness Accuracy: ±0.75 dB

In-channel Response -

Expresses maximum variance in amplitude within some specified frequency range within a particular channel, given a "flat" test signal over that same specified range. The variance is referenced to the average of the highest and lowest amplitude within the frequency range.

Range: ±3 dB

Resolution: 0.1 dB

Accuracy: ±0.5 dB

Test signal line number must be specified for in-service measurements

Digital Channel Adjacent Channel Leakage -

Averaged power in adjacent channel(s) is divided by averaged power for the test channel

Range and Accuracy: See Figure 3

Resolution: 0.3 dB

Carrier Survey -

Absolute peak amplitude of each visual carrier is measured and each associated aural carrier level is measured relative to the visual carrier for selected channels. Frequency counted only in ACCUR FREQ/AMPL mode.

Visual Carrier (FREQ/AMPL and ACCUR AMPL modes)

Amplitude Range: -18 dBmV to +58.8 dBmV for visual carrier to noise ≥30 dB (300 kHz RBW) and total input power ≤+70 dBmV

Frequency Range: 15 MHz to 1015 MHz

Resolution: 0.1 dB

Absolute Accuracy: ±2.5 dB for visual carrier to noise ≥30 dB (300 kHz RBW); for FM signals, carrier to noise ≥33 dB (100 kHz RBW)

Relative Accuracy: ±0.5 dB relative to adjacent channel, ±1.2 dB relative to all others

Visual Carrier (FAST AMPL mode)

Amplitude Range: -18 dBmV to +58.8 dBmV for carrier to noise ≥30 dB (300 kHz RBW) and total input power ≤+70 dBmV

Frequency Range: 15 MHz to 1015 MHz

Resolution: 0.3 dB

Absolute Accuracy: ±2.7 dB for carrier to noise ≥30 dB (300 kHz RBW); for FM signals, carrier to noise ≥33 dB (100 kHz RBW)

Relative Accuracy: ±0.8 dB relative to adjacent carrier; ±1.5 dB relative to all other channels

Aural Carrier (FREQ/AMPL and ACCUR AMPL modes)

Difference Range: 0 dB to 30 dB for aural carrier to noise ≥15 dB (300 kHz RBW)

Resolution: 0.1 dB

Accuracy: ±0.75 dB for aural carrier to noise ≥15 dB (300 kHz RBW).

Aural Carrier (FAST AMPL mode)

Difference Range: 0 dB to 30 dB for carrier to noise ≥15 dB (300 kHz RBW)

Resolution: 0.3 dB

Accuracy: ±1.1 dB for carrier to noise ≥15 dB (300 kHz RBW)

Analog Channel CTB and CSO -

Measured relative to visual carrier peak according to NCTA recommendations

Range and Accuracy for INTERACTIVE and AUTO modes: See Figures 4, 5 and 6

Only ±4 dB curve applies to SINGLE SWEEP and CONTINUOUS modes

Resolution: 0.3 dB

Digital Channel CTB and CSO -

Measured relative to the averaged power of the test channel

Range and Accuracy: See Figures 7 and 8

Resolution: 0.3 dB

Aural (FM) Deviation -

Peak FM deviation is measured for the selected channel

Range: 10 kHz to 50 kHz; usable to 80 kHz

Accuracy: ±4 kHz

Cross Modulation -

Peak of fundamental component of 3rd­order distortion at horizontal sync frequency (AM) measured on the unmodulated visual carrier

Range: 48 dB. For cross modulation levels below -20 dBc, equivalent frequency domain measurement of cross modulation results in a range of 58 dB.

Resolution: 0.1 dB

Accuracy: ±2 dB for cross modulation <36 dB; ±3 dB for cross modulation <48 dB

Listen Mode -

Selected channel's aural carrier is FM demodulated and output fed to speaker or headphone jack; instantaneous peak FM deviation is displayed. If positive polarity video is selected, then AM audio will be demodulated.

View Picture Mode - Visual carrier is demodulated and displayed.

View Modulation (Field) - One video field of the selected channel's video is displayed.

View Modulation (Line) -

VITS line displayed; If VITS line isn't specified in channel table, line 17 displayed. Line number user-selectable.

TV Line Selection: Use FREQ/MKRS knob

Line Format: NTSC or PAL

Line Range: 1-525 (NTSC); 1-625 (PAL)

Sweep Time: 10 µsec/div

Figure 7


Figure 8

Spectrum Analyzer Specifications

Frequency Related

Frequency Range -

9 kHz to 1800 MHz

Opt. 50 and 75: 9 kHz to 2150 MHz

Center Frequency Accuracy - 5 x 10^-7 of center frequency ±700 Hz

Frequency Counter Accuracy - 5 x 10^-7 of center frequency ±10 Hz ±1 LSD (least significant digit)

Dot Marker Frequency Accuracy - Center frequency accuracy +3% of span, typical

Frequency Counter Readout Resolution - 1 Hz or 1 kHz, selectable

Typical Long-term Drift - ±2 ppm/year

Short-term Drift -

≤400 Hz maximum drift between correction cycles (with SPAN/DIV ≤20 kHz)

Opt. 50 and 75: ≤500 Hz above 1.8 GHz

Residual FM -

≤100 Hz p-p/20 msec at ≤20 kHz span/div

Opt. 50 and 75: ≤120 Hz above 1.8 GHz

≤2 kHz_p-p/20 msec at >20 kHz span/div

Opt. 50 and 75: ≤2.4 kHz above 1.8 GHz

Resolution Bandwidth (-6 dB) -

5 MHz, 1 MHz, 300 kHz, 100 kHz, 30 kHz, 10 kHz, 3 kHz, 1 kHz and 300 Hz

RBW Shape Factor (60 dB/6 dB) - ≤7:1 for RBW ≤1 MHz

Noise Sidebands -

≤-70 dBc at 30 x RBW for RBW ≤100 kHz

Opt. 50 and 75: ≤69 dBc above 1.8 GHz

Video Filter -

Auto: approximately 1/100 of RBW

Manual: 3 Hz to 300 kHz in 1-3 sequence or WIDE. Off: approximately RBW

Frequency Span/Div Range - 100 MHz to 1 kHz selected in 1-2-5 sequence or any value from 100 MHz to 1 kHz via the keypad or UTIL menu, plus 180 MHz (MAX SPAN) and 0 Hz. Opt. 50 and 70: 215 MHz/div (MAX SPAN).

Span Accuracy - ±3% measured over the center eight divisions

Amplitude Related

Flatness -

±2 dB (relative to reference level at 100 MHz) measured with 10 dB internal RF attenuation (preamp off)

Opt. 50 and 75: ±3 dB above 1.8 GHz

Vertical Display Modes - 10, 5, 1 dB/div, Linear

Measurement Range - -90 dBmV (preamp on) to +68.8 dBmV (-139 to +20 dBm)

Display Dynamic Range -

80 dB maximum (Log Mode); 8 divisions maximum (Linear mode)

Opt. 50 and 75: Dynamic range reduced if there is signal energy at or near 2.11 GHz. Baseline will typically rise to within 10 to 20 dB of signal applied near 2.11 GHz

Reference Level Range -

Log Mode: -21.2 dBmV to +68.8 dBmV (-70 to +20 dBm); -41.2 dBmV to +48.8 dBmV with preamp on

Linear Mode: 10.83 µV/div to 342.33 mV/div (1.08 µV/div to 34.23 mV/div with preamp on)

Reference Level Steps -

Log Mode: 1 dB or 10 dB

Linear Mode: 10.83 µV/div to 342.33 mV/div in 1-2-5 sequence; ≥0.2 div/increment with FINE REF LVL STEP activated

Display Amplitude Accuracy -

10 dB/div: ±1.0 dB/10 dB to a maximum cumulative error of ±2.0 dB over the 70 dB range and a maximum cumulative error of ±4.0 dB over the 80 dB range; accuracy and range specifications are affected by the SNR of selected RBW and are valid only for the maximum specified in the following table:

5 dB/div: ±1.0 dB/10 dB to a maximum cumulative error of ±2.0 dB over the 40 dB range

1 dB/div: ±1 dB maximum error over the 8 dB range

Linear Mode: ±5% of full scale

RF Attenuation Range - 0 to 50 dB in 2 dB steps

Maximum Sensitivity (at 300 Hz RBW) - -78 dBmV (-127 dBm); -90 dBmV (-139 dBm) with preamp on

Spurious Response (Preamp Off)

Residual Spurious Response -

≤-51 dBmV (≤-100 dBm) with 0 dB RF attenuation, except at 1780 MHz where the spurious response is ≤-41 dBmV (≤-90 dBm)

Opt. 50 and 75: ≤-26 dBmV (-75 dBm) at 2.0 GHz

3rd Order IM Distortion -

≤-70 dBc from any two on-screen signals with any frequency span

Opt. 50 and 75: typically ≤65 dBc at 2.15 GHz

2nd Harmonic Distortion - ≤-66 dBc measured with 1st mixer input level of ≤+9 dBmV

LO Emission -

≤-21 dBmV (≤-70 dBm) with 0 dB RF attenuation

Opt. 50 and 75: ≤-21 dBmV (≤70 dBm) (sweep above 350 MHz)

<+29 dBmV, typical (-20 dBm) (sweep below 90 MHz)

0 Hz Spur - ≤+39 dBmV (≤-10 dBm) reference to input with 0 dB RF attenuation

Input Related

RF Input -

75 ohm BNC with quick change to 75 ohm type F connector

Opt. 50: 50 ohm Type N connector

VSWR -

With RF Attenuation ≥10 dB: 1.5:1 maximum to 1 GHz

With 0 dB RF Attenuation: 2:1 maximum to 1 GHz

Maximum Safe Input - +70 dBmV (0.1 W or 2.2 V) continuous peak with 100 VDC blocking capacitor

1 dB Compression Point - ≥+34 dBmV (-15 dBm) with 0 RF attenuation and 1st mixer at +19 dBmV (-30 dBm)

Sweep Related

Sweep Selections - Normal, single sweep and manual scan

Sweep Times - 1 µsec/div to 2 sec/div in a 1-2-5 sequence

Sweep Accuracy - ±10% over the center 8 divisions

Trigger - Free run, internal, external, line, TV line and TV field

Trigger Amplitude -

Internal: One division or more of signal

External: 100 mV peak minimum; DC coupled (15 Hz to 1 MHz)

Other Inputs/Outputs

External Trigger - BNC connector, 10 kilohm impedance, DC coupled, 0.1 µsec minimum pulse width; 50 V (DC + pk AC) maximum

External Video Input - 100 ohm impedance DC coupled; 0-50 kHz BW; 0-1.6 V (200 mV/div typical) signal input for vertical deflection of CRT beam

Video Output - 0-1.6 V of video signal, inversely proportional to vertical display amplitude; 0 V is top of screen; 1 kilohm impedance

Sweep Gate Out - TTL level that is HI while CRT beam sweeps

Sweep Output - +1.3 to -1.3 V, negative-going ramp, proportional to the horizontal sweep; output impedance ≤50 ohm

Digital Communications - Either RS-232 or GPIB interface provided as a no-cost option

Environmental

Temperature -

Operating: 0° to +50°C (MIL T-28800E)

Nonoperating: -55° to +75°C

Humidity - Nonoperating: Five cycles (120 hrs) in accordance with MIL-Std-28800E, Class 5

Vibration - Meets MIL T-28800E, Method 514, Procedure X (modified)

Shock - Operating and nonoperating: Three guillotine-type shocks of 30 g, one-half sine, 11 ms duration each direction along each major axis; total of 18 shocks

Altitude -

Operating: 15,000 ft.

Nonoperating: 50,000 ft.

Electromagnetic Compatibility -

EC92 EMC Directive 89/336/EEC:

Emissions:

EN50081-1

Radiated emissions, 30 MHz to 1 GHz: EN55022 Class B (CISPR 22 B)

Conducted emissions, 150 kHz to 30 MHz: EN55022 Class B (CISPR 22 B)

Conducted emissions, power line harmonics, 0 to 2 kHz: IEC 555-213

Immunity:

EN50082-1

Electrostatic discharge, 8 kV, IEC 801-2

Radiated immunity, 27 MHz to 500 MHz, IEC 801-3

No response above -90 dBm in a 3 V/meter field

Fast transients, capacitive clamp, 1 kV power leads, 500 V control leads, IEC 801-4

Power line surge, 1 kV differential mode, 2 kV common mode, IEC 801-5

General Characteristics

Power Requirements - 105 W maximum (1.4 A) at 115 V, 60 Hz; operates 48 Hz to 440 Hz, 90 to 132 VAC or 48 Hz to 63 Hz, 90 VAC to 250 VAC; battery power option available

Physical Characteristics

Other Capabilities

Markers - Single marker/delta marker; next right, next left peaks; next lower, next higher peaks; (highest) peak find; marker to center frequency; select start/stop frequencies; transpose DELTA markers

Measurement Modes - Noise, carrier-to-noise, bandwidth (user-definable "dB down" points), 99% occupied bandwidth, signal search and cable TV measurements (see Cable TV)

Time Delay Setup - Uses built-in time-of-day clock to initiate measurement sequences and sequence repeat interval; START TIME, REPEAT INTERVAL, RUN N TIMES

PC-Based Software Package - Provides report generation, test data analysis, data history, channel tuning table definition, user-defined program definition, limits checking, alarming and 271X display transfer

Nonvolatile Memory -

Lithium battery backup, 124 K available; used to save cable TV measurement results, setup table parameters, large user-definable key routines, antenna tables and channel tuning tables

Saved Displays: 108 maximum

Saved Front-Panel Setups: 36 maximum

Digital Storage Display - Selectable acquisition modes of positive peak only, positive/ negative peak; SAVE A, B, C and active D trace; up to four traces on screen; MAX HOLD A, B; MIN HOLD C; B, C minus A; TITLE MODE; digital storage off provides analog display

Ensemble Averaging - Provides weighted averaging of display, results in reduction of measured noise values and impulse signals

Direct Entry of Control Parameters - Frequency, span/div, reference level; RBW, video filter, vert. scale and sweep rate through the menu

Internal Preamp - Preamp can be switched in/out of circuit (degrades flatness above 600 MHz, provides a maximum of 12 dB sensitivity improvement)

Alternate Reference Level Units - dBm, dBmV, dBV, dBµV, dBµW, dBµV/m (dBmV and dBµV only in CATV measurement mode)

dBµV/m Mode - Automatically compensated field strength measurement with up to five user-selected antennas

User-Definable Power-On Status - Instrument powers up to user-definable state or supplied default settings

Constant Rate Tuning - Same on-screen tuning sensitivity regardless of span/div selection

Center Measure - Signal nearest center frequency is centered with frequency and peak amplitude automatically read out (not a marker mode); the centered signal is counted

Signal Track - Drifting signal is kept at display center with correct frequency and peak amplitude displayed

Graticule Illumination - Contrast enhancement for CRT photography

Direct Plot/Print - Supports Epson FX and LQ Series compatible Printers using RS-232 interface or HPGL compatible plotters through the GPIB interface

External Tracking Generator Opt. 5 - Provides scalar analysis for checking/aligning filters, amplifiers, cables or most 2-port networks. Includes LO output port.

TV Sideband Analyzer/LO Output Opt. 15 - Provides a 1st LO output for a 1405 TV Sideband Analyzer for frequency-agile modulator sweep

Rackmount Opt. 30 - Converts unit to a rack-mounted installation; 5.25-in. rack height, 19-in. rack width

Portable-to-Rack Adapter Opt. 34 - Provide rack-mounting of instrument in standard enclosure with handle, offering immediate instrument portability when needed; 7-in. rack height, 19-in. rack width