The Keysight (formerly Agilent / HP) 85082A is a 50 Ohm input module designed for the HP 8508A Vector Voltmeter. Operating over a frequency range of 300 kHz to 2 GHz, it features two Type-N female input connectors, providing precise RF vector amplitude and phase measurements in 50-ohm coaxial systems.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | None (requires HP 8508A mainframe) |
| Display | None (uses HP 8508A mainframe display) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered by HP 8508A mainframe |
| Operating Temperature | 0 to 55 °C |
Frequency and Channel Configuration
| Parameter | Value |
|---|---|
| Frequency Range | 300 kHz to 2.0 GHz |
| Number of Channels | 2 (Channel A and Channel B) |
| Reference Channel A Phase-Lock Range (300 kHz to 3 MHz) | -45 dBm to +16 dBm |
| Reference Channel A Phase-Lock Range (3 MHz to 2.0 GHz) | -50 dBm to +16 dBm |
RF Input Characteristics
| Parameter | Value |
|---|---|
| Input Impedance | 50 Ω nominal |
| Input Connector Type | Type-N (female) |
| Maximum Operating Input Level | +16 dBm |
| Maximum Safe RF Input Power | +24 dBm |
| Maximum Safe DC Input Voltage | ±15 V |
| Input VSWR (300 kHz to 300 MHz) | < 1.15 |
| Input VSWR (300 MHz to 1.0 GHz) | < 1.25 |
| Input VSWR (1.0 GHz to 2.0 GHz) | < 1.40 |
Amplitude Measurement Performance
| Parameter | Value |
|---|---|
| Measurement Channel B Range (300 kHz to 3 MHz) | -75 dBm to +16 dBm |
| Measurement Channel B Range (3 MHz to 2.0 GHz) | -80 dBm to +16 dBm |
| Crosstalk (300 kHz to 100 MHz) | > 100 dB |
| Crosstalk (100 MHz to 1.0 GHz) | > 80 dB |
| Crosstalk (1.0 GHz to 2.0 GHz) | > 70 dB |
| Amplitude Resolution | 0.01 dB |
Phase Measurement Performance
| Parameter | Value |
|---|---|
| Phase Resolution | 0.1 degrees |
System Integration
| Parameter | Value |
|---|---|
| Compatible Mainframe | HP 8508A |
Measurement Accuracy
| Parameter | Value |
|---|---|
| Magnitude Dynamic Accuracy (300 kHz to 100 MHz, 0 to -50 dBm) | ±0.2 dB |
| Magnitude Dynamic Accuracy (100 MHz to 1.0 GHz, 0 to -50 dBm) | ±0.4 dB |
| Magnitude Dynamic Accuracy (1.0 GHz to 2.0 GHz, 0 to -50 dBm) | ±0.8 dB |
| Phase Dynamic Accuracy (300 kHz to 100 MHz, 0 to -50 dBm) | ±1.0° |
| Phase Dynamic Accuracy (100 MHz to 1.0 GHz, 0 to -50 dBm) | ±2.0° |
| Phase Dynamic Accuracy (1.0 GHz to 2.0 GHz, 0 to -50 dBm) | ±4.0° |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +75 °C |
Technology
Vector Voltmeter Input Module
Applications
RF Vector Amplitude and Phase Measurements