The Keysight 34945A is a microwave switch/attenuator driver module designed for the 34980A Multifunction Switch/Measure Unit. It provides the power and control signals required to drive external coaxial switches, attenuators, and waveguide switches, allowing users to build customized, high-performance microwave switching systems.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | 34980A internal backplane, 9-pin D-sub connector (to extenders) |
| Display | None (status displayed via 34980A mainframe) |
| Interconnect Cable Type | Standard Category 5 (Cat5) or Category 6 (Cat6) cable |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered by 34980A mainframe; onboard drive supply: 5 V, 12 V, 24 V, or external supply up to 30 V |
| Operating Temperature | 0°C to 55°C |
| Dimensions (W×H×D) | Single-slot 34980A plug-in module |
| Mainframe Slot Usage | 1 slot |
System Compatibility
| Parameter | Value |
|---|---|
| Compatible Mainframe | Keysight 34980A |
| Supported Extender Module | 34945EXT |
| Supported External Switches | Keysight 8762/3/4/5 series, N1810/1/2 series |
| Supported Attenuators | Keysight 8494/5/6/7 series |
Drive Capacity
| Parameter | Value |
|---|---|
| Maximum Number of Extenders | 8 (per 34945A master module) |
| Maximum Drive Channels | 512 (with 8 34945EXT extenders) |
| Maximum Position Sensing Channels | 512 (with 8 34945EXT extenders) |
| Switch Drive Configuration | Latching or non-latching |
Power & Drive Specifications
| Parameter | Value |
|---|---|
| Nominal Coil Drive Voltages | 5 V, 12 V, 24 V (software selectable) |
| External Power Supply Input Range | Up to 30 V maximum |
Physical & Interconnection
| Parameter | Value |
|---|---|
| Extender Interconnect Distance | Up to 8 meters (using appropriate cabling) |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40°C to 70°C |
| Operating Humidity Range | Up to 80% RH at 40°C (non-condensing) |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Interconnect Port Type | 9-pin D-sub |
Electrical Specifications
| Parameter | Value |
|---|---|
| Drive Channel Continuous Sink Current | 200 mA |
| Drive Channel Peak Sink Current | 600 mA (for up to 100 ms) |
| Position Sensing Input Type | TTL compatible (with internal 10 kΩ pull-up to 5 V) |
Compliance
| Parameter | Value |
|---|---|
| Safety Compliance | Conforms to CSA C22.2 No. 61010-1, EN 61010-1, UL 61010-1 |
| EMC Compliance | Conforms to EN 61326-1, ICES-001, AS/NZS CISPR 11 |
Technology
Microwave Switch Driver
Applications
Automated RF and microwave signal routing, attenuator control, ATE systems