Sea Tel 4009-9 BROADBAND-AT-SEA, Руководство по установке

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4009-9 Installation Manual DAC-2202 Technical Specifications
19-4
19.2.3. Control Interface
19.2.3.1. 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.
19.2.3.2. 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
19.2.3.3. 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.
19.2.4. NMEA Interface
This interface allows up to two simultaneous external GPS or NMEA 0183 compliant Heading inputs and
an echoed GPS (Alternating GPGGA and GPGLL) output and is connected to the ACU via ribbon cable(s).
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>
19.3. Environmental Conditions
The following requirements apply to equipment installed in weather protected locations.
Temperature 0 to 40 degrees C
Humidity Up to 100% @ 40 degrees C, Non-condensing