Parallel Altitude Data Port Specifications; Serial Port Specifications Rs232 (Txd1 And Txd2) - Trans-Cal SSD120-A-RS Series Owners & Installation Manual

1.4 Parallel Altitude Data Port Specifications:

Code Format:
Driver Description:
Pull-Up Voltage: +3 to 50VDC.
Maximum Sink Current: 50 milliamperes.
Maximum Cable Length: 50 feet.(15.24 meters).
Input Signal Requirement: Pin 6 (strobe or signal common) must be either
grounded or connected to the transponder.

1.5 Serial Port Specifications RS232 (TxD1 and TxD2):

Electrical Format: Conforming to the TIA/EIA RS-232E standard.
Logic Levels: A0@, +9 volts. Logic A1@, -9 volts.
Driver Output Maximum Voltage: "25 VDC.
Driver Load Impedance: 3KΩ typ.
The TIA/EIA RS232E standard recommends one receiver per serial port.
Maximum Cable Length: 50 Feet.(15.24 meters)
Code Format: ASCII.
Communication System: Simplex (Talk Only).
Transmission Method: Asynchronous.
Transmission Rate: Selectable, 1200 bps to 9600 bps.
Update Rate: 10/sec.
In accordance with U.S. National Standard for Common System
Component Characteristics for the IFF Mark X (SIF) Air Traffic
Control Radar Beacon System, SIF/ATCRBS.
The parallel altitude data output is provided by the
Auncommitted@ collectors of a transistor array and must be
Apulled-up@ through a resistive load by the transponder.
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