CPI T02KO, Руководство по установке и эксплуатации

Страница: 54 / 122

KA BAND OUTDOOR TWT AMPLIFIER
4-2
In the multi-drop configuration, up to sixteen other addressable RS-422/485 equipped devices
may share the same serial bus. Termination resistors should be installed on the last device on the
bus. If the bus has multiple runs, the terminating resistor should be engaged on the last device at
the end of each run.
Selection of the serial hardware interface is automatic based on which pin connections are used for
the serial interface cable.
4.3 RF Switch Interface (J5)
On standard units not equipped with optional internal 1:1 switch controller, the RF Switch
Interface provides the relay-reported Ka-Band TWTA status and RF inhibit command required by
an external waveguide switch controller as well as two external interlock inputs. The status relays
can be configured for several purposes, as described below. The only command on this interface,
RF Inhibit, is active at all times and is not subject to the control mode hierarchy.
The RF Switch Interface is located on connector J5, located on the Ka-Band TWTA front panel. J5 is
a 26-pin MS type connector with pin assignments as shown in Table 4-1.
NOTE: For alternate switch configuration options such as 1:2 or Hybrid Switch
Option, Table 4-1 does not apply.
NOTE: If the RF Switch Interface is not used, it must be terminated with a
mating connector (supplied in the ship kit) wired as follows: jumper pin G to pin
H, pin J to pin K, and pin L to pin M (for 1:1 configuration Only). For a 1:2 or
Hybrid Switch Option, use the mating connector supplied with the system.
4.3.1 Relay Definitions
Each of the two status relays can be programmed to indicate one of several conditions. The
configuration of these relays is controlled through the computer interface (CIF) port. The provided
Remote & Setup control software allows control of this configuration on the RF control tab. See
Appendix B.
The configuration definitions are given below.
INSTALLATION AND OPERATION MANUAL