The Keysight/Agilent/HP 89431A is an RF downconverter designed as the RF frontend section for the 89441A vector signal analyzer, extending the DC to 10 MHz range of the 89410A analyzer up to 2650 MHz. It can also be operated as a standalone tuner under external control via its EIA-564 serial port.
Specifications
General
| Parameter | Value |
|---|---|
| Warm-up Time | 30 minutes |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 to 132 Vrms (47 to 440 Hz), 198 to 264 Vrms (47 to 66 Hz) |
| Operating Temperature | 0 °C to 55 °C |
| Dimensions (W×H×D) | 426 mm × 177 mm × 584 mm |
| Weight | 23 |
RF Specifications
| Parameter | Value |
|---|---|
| RF Input Frequency Range | 2 MHz to 2650 MHz |
| RF Input Impedance | 50 Ω |
| RF Port Connector Type | Type-N |
| RF Input Channels | 1 |
| RF Input Amplitude Range | -50 dBm to +25 dBm |
| Maximum Safe RF Input Power (Continuous) | +25 dBm (300 mW) |
| Maximum Safe DC Input Voltage | 0 V |
| RF Input VSWR (Range >= -20 dBm) | 1.6:1 (12.7 dB return loss) |
| RF Input VSWR (Range <= -25 dBm) | 1.8:1 (11 dB return loss) |
IF (Intermediate Frequency) Specifications
| Parameter | Value |
|---|---|
| IF Bandwidth | 8 MHz |
Conversion Performance
| Parameter | Value |
|---|---|
| Harmonic Distortion (Range >= -25 dBm) | < -75 dBc |
| Harmonic Distortion (Range <= -30 dBm) | < -54 dBc |
| Third-Order Intermodulation Distortion | < -75 dBc (with two input tones at 6 dB below full scale and >= 10 kHz) |
System Control and Connectivity
| Parameter | Value |
|---|---|
| System Compatibility | Converts 89410A (DC to 10 MHz) vector signal analyzer to 89441A (DC to 2650 MHz) |
Reference Clock
| Parameter | Value |
|---|---|
| External Reference Input Frequency | 10 MHz |
| Reference Output Frequency | 10 MHz |
| Reference Output Level | >= 0 dBm into 50 ohms |
Local Oscillator
| Parameter | Value |
|---|---|
| LO Phase Noise | <-104 dBc/Hz at 10 kHz offset (typical) |
Inputs & Outputs
| Parameter | Value |
|---|---|
| IF Output Port | 7 MHz IF Output (BNC) |
RF Input
| Parameter | Value |
|---|---|
| RF Attenuator Range | 0 to 50 dB in 5 dB steps |
IF Output
| Parameter | Value |
|---|---|
| Nominal IF Frequency | 7 MHz |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -20 °C to +65 °C |
| Operating Humidity | Up to 95% RH at 40 °C (non-condensing) |
Technology
RF Downconversion
Applications
RF Downconverter / Tuner for Vector Signal Analyzers