The Keysight (Agilent HP) 8901B is a high-performance Modulation Analyzer designed for complete and accurate characterization of modulated RF signals in the 150 kHz to 1300 MHz frequency range. Combining the functions of a modulation meter, frequency counter, RF power meter, and audio analyzer, it provides high-precision measurements of AM, FM, and PM, along with recovery of demodulated audio signals.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (HP-IB) standard |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 / 120 / 220 / 240 VAC (+5%, -10%), 48 to 66 Hz, 200 VA maximum |
| Operating Temperature | 0 to 55 °C |
RF Input
| Parameter | Value |
|---|---|
| Frequency Range | 150 kHz to 1300 MHz |
| Input Impedance | 50 Ω nominal |
| Tuning Mode | Automatic or Manual |
Amplitude Modulation
| Parameter | Value |
|---|---|
| AM Carrier Frequency Range | 150 kHz to 1300 MHz |
| AM Rate Range | 20 Hz to 100 kHz |
| AM Depth Range | 0 to 99% |
Frequency Modulation
| Parameter | Value |
|---|---|
| FM Carrier Frequency Range | 150 kHz to 1300 MHz |
| FM Rate Range | 20 Hz to 200 kHz |
| FM Deviation Range | up to 400 kHz |
Phase Modulation
| Parameter | Value |
|---|---|
| PM Carrier Frequency Range | 10 MHz to 1300 MHz |
| PM Rate Range | 200 Hz to 20 kHz |
| PM Deviation Range | up to 400 radians |
RF Frequency Counter
| Parameter | Value |
|---|---|
| Counter Frequency Range | 150 kHz to 1300 MHz |
| Counter Accuracy | ±(Time Base Accuracy + 1 count) |
| Internal Time Base Frequency | 10 MHz |
RF Level & Power
| Parameter | Value |
|---|---|
| RF Power Sensor Compatibility | HP 8480 series power sensors |
Audio Filters & Demodulated Outputs
| Parameter | Value |
|---|---|
| High-Pass Filters | 50 Hz and 300 Hz |
| Low-Pass Filters | 3 kHz, 15 kHz, and >20 kHz |
| De-emphasis Filters Selection | 25 μs, 50 μs, 75 μs, and 750 μs |
| Demodulated Output Impedance | 600 Ω nominal |
Audio Distortion & Frequency Counter
| Parameter | Value |
|---|---|
| Audio Distortion Measurement Frequencies | 400 Hz and 1 kHz (±5% frequency tolerance) |
Options & Upgrades
| Parameter | Value |
|---|---|
| Adjacent Channel Power Option | Supported with Options 030 through 037 |
| Carrier Noise Measurement Option | Supported with Options 030 through 037 |
Inputs & Outputs
| Parameter | Value |
|---|---|
| RF Input Connector | Type-N female |
Hardware Options
| Parameter | Value |
|---|---|
| Option 001 | Rear-panel connectors instead of front-panel |
Options
| Parameter | Value |
|---|---|
| Option 010 | Adds CCITT Weighting Filter |
| Option 011 | Adds CCIR Weighting Filter |
| Option 032 | 12.5 kHz Channel Spacing Adjacent Channel Power Filter |
| Option 033 | 25.0 kHz Channel Spacing Adjacent Channel Power Filter |
| Option 035 | 30.0 kHz Channel Spacing Adjacent Channel Power Filter |
| Option 037 | Adds Carrier Noise Filter |
Performance
| Parameter | Value |
|---|---|
| Detector Types | Peak+, Peak-, Peak-Hold, Average (RMS Calibrated) |
Technology
Analog modulation analysis with power sensor compatibility
Applications
RF transmitter testing, modulation analysis, and signal monitoring
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