The Keysight (formerly HP/Agilent) 8920A is a highly integrated RF communications test set designed for the service, repair, and manufacture of cellular and land mobile radios. Combining over 20 discrete instruments into one compact, portable unit, it provides extensive transmitter and receiver testing capabilities up to 1 GHz, including AM, FM, and SSB modulation analysis, a synthesized signal generator, audio analyzers, and options for full-span spectrum analysis and signaling emulation.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE-488.2), RS-232, Parallel Printer Port (typically with Option 003) |
| Display | 5-inch green phosphor monochrome CRT |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 to 132 V AC or 198 to 264 V AC, 48 to 440 Hz, 150 VA maximum |
| Operating Temperature | 0 to +55 °C |
| Dimensions (W×H×D) | 330 mm × 188 mm × 456 mm |
| Weight | 16.8 |
RF Signal Generator Specifications
| Parameter | Value |
|---|---|
| Frequency Range (Standard) | 30 MHz to 1000 MHz |
| Frequency Resolution | 1 Hz |
| Output Power Range (RF IN/OUT Port) | -137 dBm to -20.5 dBm (into 50 Ω) |
| Output Power Range (DUPLEX OUT Port) | -127 dBm to +3.5 dBm (into 50 Ω) |
| Output Power Resolution | 0.1 dB |
| Output SWR (RF IN/OUT Port) | < 1.25 (for frequencies up to 1000 MHz) |
| Output SWR (DUPLEX OUT Port) | < 2.0 (for frequencies up to 1000 MHz) |
| Harmonics | < -30 dBc |
| Non-harmonics Spurious | < -55 dBc (at > 20 kHz offset) |
| FM Deviation Range | 0 to 100 kHz (frequency dependent) |
| AM Depth Range | 0 to 90% |
| AM Depth Accuracy | ±5% of setting + 1.5% AM (at 1 kHz rate) |
RF Analyzer Specifications
| Parameter | Value |
|---|---|
| RF Power Meter Continuous Range | 1 mW to 60 W (continuous), up to 100 W (for 10 seconds) |
| RF Power Meter Accuracy | ±10% of reading ± 1 count (±0.4 dB) |
| Frequency Counter Resolution | 1 Hz |
| FM Demodulation Accuracy | ±4% of reading (at 1 kHz rate, 5 kHz deviation) |
| AM Demodulation Accuracy | ±5% of reading (at 1 kHz rate, 30% depth) |
Audio Source (AF Generator)
| Parameter | Value |
|---|---|
| Audio Source Count | 2 independent internal variable synthesizers |
| Frequency Range | DC to 25 kHz |
| Output Level Range | 0.1 mV to 4 Vrms (into 600 Ω) |
| Output Level Resolution | 0.1 mV (for level < 100 mV) or 3 digits |
| Total Harmonic Distortion (THD) | < 0.12% (at 1 kHz, 1 Vrms into 600 Ω) |
Audio Analyzer
| Parameter | Value |
|---|---|
| Audio Counter Frequency Range | 20 Hz to 400 kHz |
| AC Voltmeter Measurement Range | 100 μV to 30 Vrms |
| AC Voltmeter Measurement Accuracy | ±3% of reading (20 Hz to 100 kHz) |
| DC Voltmeter Measurement Range | 100 mV to 42 V |
| DC Voltmeter Measurement Accuracy | ±1.0% of reading + 45 mV |
| Distortion (THD+N) Range | 0.1% to 100% (at 1 kHz) |
| SINAD Measurement Range | 0 to 46 dB (at 1 kHz) |
| SINAD Measurement Accuracy | ±1 dB |
| Audio Filters (High-Pass) | 50 Hz, 300 Hz |
| Audio Filters (Low-Pass) | 300 Hz, 3 kHz, 15 kHz, 20 kHz |
| Audio Filters (De-emphasis & Weighting) | 750 μs de-emphasis, C-Message, CCITT |
| AUDIO IN Input Impedance | 100 kΩ (nominal) |
| AC Voltmeter Frequency Range | 20 Hz - 100 kHz |
Oscilloscope
| Parameter | Value |
|---|---|
| Oscilloscope 3dB Bandwidth | 2 Hz to 50 kHz |
| Oscilloscope Vertical Sensitivity Range | 10 mV/div to 10 V/div |
| Oscilloscope Timebase Range | 10 μs/div to 100 ms/div (in 1-2-5 sequence) |
Signaling and Demodulation Capabilities
| Parameter | Value |
|---|---|
| Signaling Encoders/Decoders Supported | Tone Sequential, DTMF, digital paging (CCITT, POCSAG, ZVEI), cellular signaling, trunking |
| Cellular Formats Emulated | Analog cellular standards (AMPS, TACS, JTACS, NMT etc.) |
System Interfaces & Connectivity
| Parameter | Value |
|---|---|
| RF IN/OUT Connector Type | Type-N female (50 Ω) |
| DUPLEX OUT Connector Type | BNC female (50 Ω) |
| ANT IN Connector Type | BNC female (50 Ω) |
| Audio In/Out Connectors | BNC female |
| External Reference Input Frequency | 10 MHz (accepts 1, 2, 5, or 10 MHz reference signal) |
| External Reference Output Frequency | 10 MHz |
| Memory Card Slot Type | PCMCIA Type I or II (for program and setup storage) |
Physical and Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -55 to +75 °C |
Options & Upgrade Configurations
| Parameter | Value |
|---|---|
| Option 001 | High stability timebase |
| Option 004 | Tone/Digital Signaling Encoder/Decoder |
| Option 009 | CCITT Weighting Filter |
| Option 102 | Spectrum Analyzer with Tracking Generator |
RF Generator
| Parameter | Value |
|---|---|
| RF Generator Level Accuracy (RF IN/OUT) | ±1.2 dB (level >= -120 dBm) |
| RF Generator Level Accuracy (DUPLEX OUT) | ±1.0 dB (level >= -127 dBm) |
| FM Modulation Rate | DC to 25 kHz (1 dB bandwidth, DC coupled); 20 Hz to 25 kHz (AC coupled) |
| AM Modulation Rate | 20 Hz to 25 kHz (3 dB bandwidth) |
| RF Generator Residual FM | <7 Hz rms (CCITT), <20 Hz rms (300 Hz to 3 kHz) for fc < 1000 MHz |
| RF Generator Residual AM | <0.05% rms (300 Hz to 3 kHz bandwidth, fc < 1000 MHz) |
| RF Generator SSB Phase Noise | <-110 dBc/Hz (at 20 kHz offset, fc < 1000 MHz) |
RF Analyzer
| Parameter | Value |
|---|---|
| RF Analyzer Frequency Range | 30 MHz - 1000 MHz |
| RF Analyzer Tuning Resolution | 1 Hz |
| RF Power Meter Maximum Short-Term Power | 100 W (for up to 10 seconds per minute on RF IN/OUT) |
| Frequency Counter Range | 10 MHz - 1000 MHz |
| Frequency Counter Accuracy | ±1 Hz + timebase accuracy |
| Frequency Counter Sensitivity (RF IN/OUT) | 5 mW |
| Frequency Counter Sensitivity (ANT IN) | 100 µV |
| FM Demodulation Distortion | < 1% (at 1 kHz rate, 6 kHz deviation) |
| AM Demodulation Distortion | < 2% (at 1 kHz rate, 30% AM) |
| FM Demodulation Range | 0 to 150 kHz deviation |
| AM Demodulation Range | 0 to 95% depth |
Spectrum Analyzer (Option 002/102)
| Parameter | Value |
|---|---|
| Spectrum Analyzer Frequency Span | 10 kHz - 10 MHz (plus zero span) |
| Spectrum Analyzer Resolution Bandwidth (RBW) | 300 Hz, 1 kHz, 3 kHz, 30 kHz, 300 kHz |
| Spectrum Analyzer Display Range | 80 dB |
| Spectrum Analyzer Log Scale | 1, 2, 5, 10 dB/div |
Timebase
| Parameter | Value |
|---|---|
| Standard Timebase Temperature Stability | < ±2.0 ppm (0 °C to 55 °C) |
| Standard Timebase Aging | < 2.0 ppm/year |
| Option 001 Timebase Temperature Stability | < ±0.05 ppm (0 °C to 55 °C) |
Electrical & Environmental
| Parameter | Value |
|---|---|
| Line Voltage | 90 - 132 Vac / 198 - 264 Vac |
| Line Frequency | 48 - 440 Hz |
| Power Consumption | 300 VA (maximum) |
Audio Measurements
| Parameter | Value |
|---|---|
| Audio Counter Accuracy | ±0.02% ± timebase accuracy |
| Audio Counter Input Level Range | 20 mV to 30 V rms |
Options
| Parameter | Value |
|---|---|
| Option 010 | 400 Hz High-Pass Filter |
| Option 011 | CCITT weighting filter |
| Option 012 | Adds Tracking Generator to Spectrum Analyzer (requires Option 002) |
| Option 013 | C-Message weighting filter |
| Option 014 | 600 Ohm audio input/output impedance |
Technology
Superheterodyne RF transceiver with synthesizer control
Applications
Land Mobile Radio (LMR), Cellular Phone Testing, RF transmitter and receiver maintenance, and general RF analysis