The Keysight (Agilent/HP) 85047A is an S-parameter test set designed for use with compatible network analyzers (such as the 8753 series). It allows for the complete measurement of transmission and reflection characteristics (S-parameters) of two-port, 50-ohm devices in both directions with a single connection. The test set features a built-in solid-state RF switch, a programmable step attenuator, bias tees, and an internal frequency doubler which extends the frequency range of compatible analyzers up to 6 GHz.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Special multi-pin interconnect cable to network analyzer, BNC female DC bias inputs |
| Display | None (controlled via host analyzer) |
| Front Panel Status Indicators | Active port LEDs (Port 1 / Port 2) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Power supplied directly from host network analyzer via interconnect cable |
| Operating Temperature | 0 to 55 °C |
| Weight | 10 kg |
Frequency & Port Characteristics
| Parameter | Value |
|---|---|
| Frequency Range | 300 kHz to 6 GHz |
| Frequency Range (Standard) | 300 kHz to 3 GHz |
| Frequency Range (with Doubler) | 3 MHz to 6 GHz |
| Nominal Impedance | 50 Ω |
| Number of Test Ports | 2 |
| Test Port Connector Type | Precision 7 mm (APC-7) |
| RF Input Connector Type | Type-N (female) |
| Output Port Connectors (to Receiver) | Type-N female (A, B, R on front panel) |
| Directivity (300 kHz to 1.3 GHz) | 35 dB |
| Directivity (1.3 GHz to 3.0 GHz) | 30 dB |
| Directivity (3.0 GHz to 6.0 GHz) | 25 dB |
Signal Routing & Test Set Control
| Parameter | Value |
|---|---|
| Internal Bias Tees | Standard |
| Bias Tee Connectors | BNC female (rear panel) |
| Internal Step Attenuator Range | 0 to 70 dB |
| Step Attenuator Resolution | 10 dB |
Environmental & Compliance
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 to +75 °C |
Tracking
| Parameter | Value |
|---|---|
| Transmission Phase Tracking (300 kHz to 3.0 GHz) | ±10° |
| Transmission Phase Tracking (3.0 GHz to 6.0 GHz) | ±20° |
| Reflection Amplitude Tracking (300 kHz to 3.0 GHz) | ±1.5 dB |
| Reflection Amplitude Tracking (3.0 GHz to 6.0 GHz) | ±2.5 dB |
| Reflection Phase Tracking (300 kHz to 3.0 GHz) | ±10° |
| Reflection Phase Tracking (3.0 GHz to 6.0 GHz) | ±20° |
Electrical Specifications
| Parameter | Value |
|---|---|
| Maximum Operating RF Input Power | +20 dBm |
Power
| Parameter | Value |
|---|---|
| Power Source | Derived from the host HP/Agilent 8753 network analyzer via the test set interconnect cable |
Performance
| Parameter | Value |
|---|---|
| RF Input Damage Level | +26 dBm (or 0 VDC) |
| Test Port Damage Level | +30 dBm (or 30 VDC) |
Technology
S-Parameter Test Set
Applications
RF and Microwave Component Testing