Axcera 5720 Series, Manual

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Modulator Module Interface
SCADA Communications Interface
Power Supply Module Interface
45
Signal Name Backplane Backplane Signal Type Description
Modulator Pin
Modulator Interlock J19-27B J18-1C Discrete Contact Provides a pull down to indicate that the
Closure Input modulator module is installed. A low level
indicates the module is installed
Unlock Mute J19-28B J18-1B Discrete Open A low indicates the modulator PLL is
Collector Input unlocked.
External IF present J19-32A J18-1A Discrete Open A low indicates the external IF CW is present
Collector Input to the modulator
Video Loss J19-1B J18-2A Discrete Open A low indicates video loss at the modulator
Collector Input input
Signal Name Backplane Backplane Signal Type Description
P.S. Pin
P.S. Good J19-2A J26-5 Discrete Open A low indicates that the +10.8 DC power is
Collector Input operating properly
P.S. Enable J19-3A J26-4 Discrete Open A low enables the +10.8 DC power supply
Collector Output
Signal Name Backplane Backplane Signal Type Description
SCADA Pin
+ Serial Line J19-26C J15-4, J16-4 + RS-485 Communication Provides the + differential line for the
line
bidirectional RS-485 communications
- Signal Line J19-28C J15-5, J16-5 + RS-485 Communication Provides the - differential line for the
line
bidirectional RS-485 communications