General Dynamics DIGITAL TRACKING RECEIVER - Default Configuration; Input;Output Interface Connector Pin-Out; Description of I;O Connections

Installation
CG-1220 DT
R
3-3
TABLE 3-1 DESCRIPTION OF I/O CONNECTIONS
CONNECTION DESCRIPTION
Line POWER ENTRY
MODULE
For 120 V operation, a standard 3-prong National Electrical Manufacturers
Association (NEMA) plug is provided; for 220/230/240 V operation, the same
power cable assembly is provided, but the customer may be required to install a
more appropriate plug on site. Note that the ground conductor MUST be utilized
with the line power connection.
RF INPUTS The RF inputs to the DTR are provided through 50 ohm, type N female
connectors on the rear panel. The allowable input signal range is -110 decibel
referred to 1 milliwatt (dBm) to -40 dBm. The DTR input Voltage Standing-Wave
Ratio (VSWR) is 1.25:1, nominal. The standard receiver configuration has
INPUT #1 available only. In multiband receivers, lower input numbers
correspond with lower frequencies. For example, in a C and Ku receiver, Inputs
1 & 2 would be C-band and Inputs 3 & 4 would be Ku-band.
I/O INTERFACE The I/O interface provides the classic analog interface for ACU control. There
are two sets of analog output signals: OUT(+,-) and AUX(+,-). Four contact
lines are provided, as well as a summary fault closure. Additionally, there are
several general-purpose inputs and outputs that can be used to change the
receiver's operational mode. See Tables 3-2 and 3-3 for pin-outs.
SERIAL INTERFACE #1 This serial port provides a sophisticated digital control and status interface for
advanced ACU and M&C systems. Interface #1 is configured for RS-232 only.
Full remote control of the receiver is realized with this interface. See Table 3-7
for pin-outs.
SERIAL INTERFACE #2 This serial port provides a sophisticated digital control and status interface for
advanced ACU and M&C systems. Interface #2 is fully configurable for RS-232
or RS-422. Full remote control of the receiver is realized with this interface.
See Table 3-8 for pin-outs.
SERIAL INTERFACE #3 This serial port provides a sophisticated digital control and status interface for
advanced M&C systems. Interface #3 is configured for RS-485 only. Full
remote control of the receiver is realized with this interface. See Table 3-9 for
pin-outs.
3.3.1 Input/Output Interface Connector Pin-Out
The I/O Interface Connector Pin-Out section describes the signals and configuration
of the I/O INTERFACE connectors (25-pin D female subminiature socket).
3.3.1.1 Default Configuration
Table 3-2 and 3-3 describes the pin number, designation and function of the two
I/O ports. The tables show the default configuration only.