This document is the instruction manual for the automatic switching unit RM-25, including introduction, specifications, power supply, description, operating procedures and other contents.
The Electro-Metrics RM-25 Automatic Switching Unit contains two relays in parallel, each switching five input connectors between an output connector from DC to 18 GHz. The unit can be operated using either the front panel controls or an external computer via the rear panel IEEE-488.2 Interface Bus Connector. It features a maximum RF power input of 200 Watts average and 1000 Watts peak.
| Frequency Range | DC-18 GHz |
|---|---|
| Number of Relays | 2 |
| RF Inputs per Relay | 5 |
| Insertion Loss | <0.3 dB @ ≤1 GHz |
| Input Impedance | 50 ohms |
| Output Impedance | 50 ohms |
| VSWR | <1.2:1 |
| Isolation | 50 dB |
| Switching Speed | <50 ms |
| Switching Life | 1 x 10^6 switches |
| Maximum RF Power Input | 200 Watts average, 1000 Watts peak |
| Input Voltage | 105-265 VAC, 47-440 Hz |
| Power Consumption | 12 Watts (maximum) |
| Interface | IEEE-488.2 (GPIB-488.2) |
The operating temperature range is 0°C to 50°C.
The unit uses a 1.0 AMP 3AG SLO-BLO fuse.
Each relay switches five input connectors.
Yes, the unit can be operated using an external computer via the rear panel IEEE-488.2 Interface Bus Connector.