Sea Tel DAC-2202, Installation And Operation Manual

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Technical Specifications DAC-2202 Antenna Control Unit
9-4
9.2. Terminal Mounting Strip
9.2.1. Synchro Interface:
Connectors 5 screw terminal connections
Input Voltage Level 36-110 VDC, 400 or 60 hertz
Synchro Ratios 1:1, 36:1, 90 or 180:1 and 360:1 with Synchro-Digital converter
360:1 with Synchro-SBS converter
Impedance: 1M ohm
9.2.2. SBS Interface
Connectors 4 screw terminal connections
Input Voltage Level 20-90 VDC
Interface Opto-Isolated,
Polarity Auto switching
Ratio 6 steps per degree
Impedance: 10K ohm
9.2.3. Control Interface
9.2.3.1. External AGC
External AGC or Satellite Modem Lock Input.
Connections 2 screw terminal connections (AGC and GND)
Voltage Level: 0-5 VDC
Impedance: 30K ohm
Control: Low Level (<1.25Vdc) = Modem Lock*
High Level (>1.25Vdc) = Modem Unlock*
*The logic sense of the external Satellite Modem Lock input can be reversed by adding 128 to
the SYSTEM TYPE Parameter.
9.2.3.2. SW1 Local Band Select Output
Control local (BDE) band select switch(s) or tone generator(s).
Connections 1 screw terminal connection (SW1)
Control Level: Low Band = OPEN circuit
High Band = SHORT to ground
Controlled by MODE – TRACKING – Band Selection.
Current sink of 0.5 amps
max
9.2.3.3. SW2 Blockage / TX Mute Output
Blockage output to Dual Antenna Arbitrator coax switch panel OR TX Mute output to Satellite
Modem for RF radiation hazard and/or FCC compliance.
Connections 1 screw terminal connection (SW2)
Control Level: Not Blocked or Not mispointed = OPEN circuit*
Blocked or mispointed = SHORT to ground *
Current sink of 0.5 amps max
*The logic level output can be reversed by adding 16 to the SYSTEM TYPE parameter.