Satellite systems equipment
L-band Switching Unit
Description
L-band Switching Unit (SU) is a three-channel switch for the LNB and is designed for operation in the switching system of receiving channels in various types of satellite earth stations (ES) in the frequency range 950-1750 MHz (L-band).
L-band Switching Unit
 |
 |
Functions
SU performs the following functions:
- switching signals from the LNB;
- supply power to the LNB;
- monitor and control of the switching LNB from the front panel or through remote monitor and control interface RS-485 from a remote personal computer of the Customer;
- monitoring and display current status
Monitoring and display current status:
- presence of electrical input 220 VAC, 50 Hz (displayed as the LED lights on the front panel);
- status (position) of the connected LNB (displayed yellow LEDs on the front panel).
TECHNICAL SPECIFICATIONS:
|
Parameters |
Specifications |
|---|---|
|
Frequency range, MHz |
950-1750 |
| Transfer ratio in Channel 1 and Channel 2, dB, no less | -1,5 |
| Transfer ratio in Channel 3, dB, no less | 0,9 |
| Isolations between outputs in one channel, dB, no less | 43 |
| VSWR in channel, no more | 2,2 |
| Power for LNB, VDC | 24 |
| Current for LNB, А, no less | 1 |
|
Control modes |
Local and Remote |
|
Remote M&C interface |
RS-485 |
|
Input power |
220VAC +10/-15 % 47-53 Hz |
|
Power consumption, W, no more |
50 |
|
Operational Temperature, °С |
+1...+35 |
|
Survival Temperature, °С |
+1...+40 |
|
Relative Humidity at 25°С, no more |
80 |
|
Dimensions |
482x423x89 (19" 2U) |
|
Weight, kg |
4,2 |
Note.
In agreement with the customer parameters of Switching Unit can be changed in terms of: number of channel switching, nominal voltages and currents to power external equipment (LNB), etc.
