4.3.5.1 FAULT Detection and Indication
The unit will automatically go into a shutdown mode (MUTE) and send a message to all of the
external interfaces (including the red Tx LED) when any one of the following occurs:
1. The local oscillator within an up-converter module is out of lock.
2. The hotspot temperature exceeds 85
°
C.
3. Any of the GaAs FET or GaN devices failed.
4. Reflected power is greater than 44 dBm.
The SSPB continually monitors the internal temperature and the current consumption. It also has
an automatic shutdown feature to prevent operation at excessive temperatures. The unit will
automatically restart when the hotspot temperature falls below to 65°C.
A thermal alarm may result from any one of the following conditions:
1. High ambient temperature (the SSPB Up-Converter is designed to operate between -30
°
C
and +55°C ambient).
2. Blockage at the air intake or exhaust vents.
4.3.5.2 MUTE Control
The user can disable the RF output power remotely by:
1. Leaving unconnected pins G and H of the Relay interface connector the Transmit way will be
MUTE (see
Section 5.1
at page 21).
2. Sending a mute command in terminal mode through the RS-232 interface for transmit.
3. Sending a mute command in packet mode through the RS-485 interface for transmit.
This feature is useful if the user wishes to perform a maintenance check or to check out the
transmission system.
4.3.6 P
OWER
S
UPPLY
The
Power Supply Module
pr12 VDC output to the following modules:
1. Power amplifier module (high current),
2. L/Ku-Band
up-converter
module,
3. 10 MHz oscillator,
4. Power
monitor
module,
5. Current
sensor,
6. Main controller board
14
Содержание SSPBM-K150-BRE
Страница 17: ...Figure 1 Product Outline 16 ...
Страница 36: ...Figure 4 HyperTerminal Mode Communication after pressing ENTER 35 ...
Страница 39: ...Figure 5 HyperTerminal Communication List of commands after pressing h ENTER for Help 38 ...
Страница 51: ...Figure 6 Proposed Graphic User Interface GUI based on RS 485 Protocol with no ALC set single unit 50 ...
Страница 52: ...Figure 7 Proposed Graphic User Interface GUI based on RS 485 Protocol with ALC set single unit 51 ...