The radiometer controller provides a Rescom Interface Protocol Emulator over TCP/IP. You can request the Measured Data (RM), the Housekeep Data (RH) and the System Status (RS). The radiometer controller answers to these three commands RM, RH and RS with the corresponding Rescom string. The default Port is 2101. The RMC accept only one connection at the same time.
The Rescom Interface Protocol expect a frame termination with a Checksum Character followed by a Carriage Return <CR> (ASCII 13). The Checksum Character is calculated in the following way:
Example:
For the three implemented Commands the Checksum Character is the following
| Frame | Checksum | Type |
|---|---|---|
| RM | _ | Measured Data |
| RH | Z | Houskeep Data |
| RS | e | System Status |
It is possible to connect to this port with a simple telnet client. To establish a connection , the following command is entered at a Command Line: telnet 192.168.2.76 2101 (You have to enter the correct IP-Adress). Now you can type one of the three Commands with the Checksum e.g. RM_ .
Request Measured Data RM
In a 20/30GHz Radiometer the Answer is: M ##.##, ##.##, ##.##, #.##, #.##, #.##, 99.99, 99.99, 99.99,999.99 In a 13.5GHz Radiometer the Answer is: M 999.99, ##.##,999.99, 99.99, ##.##, 99.99, 99.99, 99.99, 99.99,999.99
| description | 20/30GHz | 13,5GHz |
|---|---|---|
| Primary front end channel | 31.7 GHz sky noise | 999.99 K |
| Lower alternate front end channel | 21.3 GHz sky noise | 13.5 GHz sky noise |
| Upper alternate front end channel | 23.8 GHz sky noise | 999.99 K |
| Primary front end channel | 31.7 GHz attenuation | 99.99 dB |
| Lower alternate front end channel | 21.3 GHz attenuation | 13.5 GHz attenuation |
| Upper alternate front end channel | 23.8 GHz attenuation | 99.99 dB |
| Scaled calculated attenuation (dummy value) | 99.99 dB | 99.99 dB |
| Scaled calculated attenuation (dummy value) | 99.99 dB | 99.99 dB |
| Liquid and vapour phase water (dummy value) | 99.99 dB | 99.99 dB |
| Liquid and vapour phase water (dummy value) | 99.99 dB | 999.99 dB |
Request Housekeeping Data RH
In a 20/30GHz Radiometer the Answer is: H -50.00,-50.00, ##.##, ##.##, ##.##, ##.##,-50.00,-50.00, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##,-50.00,-50.00,-50.00
If no temperature sensor is present, the RMC returns the value '-50.00'.
| 20/30GHz Radiometer description | RMC Sensor |
|---|---|
| 30 GHz temperature cold load, internal sensor | not used |
| 30 GHz temperature cold load, external sensor | not used |
| 30 GHz temperature test port | 06 |
| 30 GHz Noise Source temperature | 02 |
| 30 GHz reference load temperature | 01 |
| 30 GHz temperature regulator temperature | 01 |
| 21.3/23.8 GHz temperature cold load, internal sensor | not used |
| 21.3/23.8 GHz temperature cold load, external sensor | not used |
| 21.3/23.8 GHz temperature test port | 22 |
| 21.3/23.8 GHz Noise Source temperature | 18 |
| 21.3/23.8 GHz reference load temperature | 17 |
| 21.3/23.8 GHz temperature regulator temperature | 17 |
| Diplexer temperature | 16 |
| Feed horn temperature | 13 |
| Feed horn transition temperature | 15 |
| Electronics enclosure temperature | 10 |
| Antenna blower temperature | 09 |
| Antenna reflector temperature | 14 |
| Customer specific | not used |
| Customer specific | not used |
| Customer specific | not used |
In a 13.5GHz the Answer is: H -50.00,-50.00,-50.00,-50.00,-50.00,-50.00,-50.00,-50.00, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##, ##.##,-50.00,-50.00,-50.00
If no temperature sensor is present, the RMC returns the value '-50.00'.
| 13.5GHz Radiometer description | RMC Sensor |
|---|---|
| Not used | not used |
| Not used | not used |
| Not used | not used |
| Not used | not used |
| Not used | not used |
| Not used | not used |
| 13.5 GHz temperature cold load, internal sensor | not used |
| 13.5 GHz temperature cold load, external sensor | not used |
| 13.5 GHz temperature test port | 06 |
| 13.5 GHz Noise Source temperature | 02 |
| 13.5 GHz reference load temperature | 01 |
| 13.5 GHz temperature regulator temperature | 01 |
| Diplexer temperature | 16 |
| Feed horn temperature | 13 |
| Feed horn transition temperature | 15 |
| Electronics enclosure temperature | 10 |
| Antenna blower temperature | 09 |
| Antenna reflector temperature | 14 |
| Customer specific | not used |
| Customer specific | not used |
| Customer specific | not used |
Request System Status RS
In a 20/30GHz Radiometer the Answer is: S 20.00, 20.00, ##.##, 6.00, #.##, #.##, #.##, #.##, 0.00
In a 13,5GHz Radiometer the answer is: S 20.00, 20.00, ##.##, 1.00, 9.99, 0.00, 9.99, #.##, 0.00
| description | Value |
|---|---|
| First Scaling Frequency in GHz | 20.00 |
| Second scaling frequency in GHz | 20.00 |
| Combined power supply status | 0 = Not OK; 63 = OK |
| The number of primary and alternate front end channels | 1 = 13.5 GHz; 6 = 20/20/30 GHz |
| Primary channel waveguide position (30GHz) | 0.00 = the input is connected to the antenna; 1.00 = the input is connected to the Test Port; 9.99= 13.5 GHz radiometer |
| Alternate channel WG switch position (20GHz and 13.5 GHz) | 0.0 = the input is connected to the antenna; 1.00 the input is connected to the Test Port |
| Primary channel IF gain (30 GHz) | 2.00 = normal conditions in the IF channel; 9.99 for a 13.5 GHz radiometer |
| Alternate channel IF gain (20 GHz or 13.5 GHz) | always 2.00 = normal conditions in the IF channel |
| Radiometer front end serial number | 0.00 |