COBHAM Sea Tel 4010W-91, Installation Manual

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4010W-91 Installation Manual DAC-2202 Technical Specifications
18-4
18.2.2.
Connectors 4 screw terminal connections
SBS Interface
Input Voltage Level 20-90 VDC
Interface Opto-Isolated,
Polarity Auto switching
Ratio 6 steps per degree
Impedance: 10K ohm
18.2.3.
18.2.3.1. External AGC
Control Interface
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.
18.2.3.2. 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
18.2.3.3. 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.
18.2.4.
This interface allows up to two simultaneous external GPS or NMEA 0183 compliant Heading inputs and an
echoed GPS (GPGGA) output and is connected to the ACU via ribbon cable(s).
NMEA Interface
Connections 5 Screw terminal connections (RXA+ / RXA- input, RXB+ / RXB-input,
and TXA+ output)
Rx Sentence Format:
G
lobal
P
ositioning
S
ystem
$xxGLL,DDmm.mmmm,N,DDDmm.mmmm,W (,UTC
optional)
(,*CS
optional) <cr>
Heading
$xxHDT,xxx.x <cr>
Tx Sentence Format
G
lobal
P
ositioning
S
ystem
$GPGGA,0,DDmm,N,DDDmm,W <cr> <lf>