The Keysight 34947A (formerly Agilent 34947A) is a high-performance microwave switch module designed for the 34980A Multifunction Switch/Measure Unit. Featuring three independent, unterminated SPDT (1x2) coaxial switches, it provides bi-directional routing of RF and microwave signals up to 26.5 GHz. It is highly configurable, offering option-dependent frequency ranges, low insertion loss, exceptional isolation, and high power handling capability up to 50W. The module is ideal for multi-band receiver/transmitter testing and general-purpose microwave signal routing.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Controlled via 34980A Mainframe (GPIB, USB, LAN/LXI) |
| Display | Status displayed on 34980A mainframe front panel |
| Mainframe Compatibility | Keysight 34980A |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered directly from 34980A mainframe backplane |
| Operating Temperature | 0 °C to 55 °C |
| Dimensions (W×H×D) | 38.1 mm × 88.9 mm × 254 mm |
| Weight | 0.29 |
RF & Microwave Performance
| Parameter | Value |
|---|---|
| Switch Configuration | Three independent 1x2 (SPDT) unterminated switches |
| Frequency Range (Option 001) | DC to 4 GHz |
| Frequency Range (Option 002) | DC to 20 GHz |
| Frequency Range (Option 003) | DC to 26.5 GHz |
| Characteristic Impedance | 50 Ω |
| RF Connector Type | SMA (female) |
| Signal Path | Bi-directional |
| Input Power Rating (CW) | 1 W |
| Insertion Loss Repeatability | 0.03 dB (typical) |
Switching & Actuation Characteristics
| Parameter | Value |
|---|---|
| Actuation Type | Latching |
| Switching Speed | < 15 ms |
| Operating Life | 5,000,000 cycles |
Control, Driver & Communication Interfaces
| Parameter | Value |
|---|---|
| Status Feedback | State readback capability via mainframe software query |
| Command Set Support | SCPI (via 34980A mainframe) |
Physical & Mechanical Properties
| Parameter | Value |
|---|---|
| Required Mainframe Slot Width | 1 slot |
| External Switch Mounting Option | Not supported |
Environmental & Reliability
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to 70 °C |
| Operating Humidity Range | Up to 80% RH at 40 °C (non-condensing) |
Compliance & Ordering Information
| Parameter | Value |
|---|---|
| Environmental Compliance | RoHS compliant |
Configuration
| Parameter | Value |
|---|---|
| Internal Switch Model (Option 001) | Agilent 8762A (DC to 4 GHz) |
| Internal Switch Model (Option 002) | Agilent 8762B (DC to 20 GHz) |
| Internal Switch Model (Option 003) | Agilent 8762C (DC to 26.5 GHz) |
Safety
| Parameter | Value |
|---|---|
| Maximum Safety Voltage | 42 V |
RF Performance
| Parameter | Value |
|---|---|
| Peak Power Rating | 100 W (10 µs maximum pulse width) |
Power & Control
| Parameter | Value |
|---|---|
| Switch Drive Voltage | 24 V nominal |
Technology
Coaxial Latching Switch
Applications
RF and Microwave Signal Routing