RSU-503 Redundancy Switch Unit Installation ... - Comtech EF Data

Installation RSU-503 Redundancy Switch Unit
2.4.6.2 LNA Plate to Waveguide Switch
The following table outlines the pinouts of the LNA plate to Waveguide Switch cable.
This cable is internal on the redundant LNA plate.
Note: This pinout table may be helpful if an EFData Waveguide Switch is used.
Name Pin # Function
Command, Position 1 A +28V pulse for 500 milliseconds
Command Common B Ground
Command, Position 2 C +28V pulse for 500 milliseconds
Indicator, Position 1 D Connects to Common when in position 1
Indicator Common E Ground
Indicator, Position 2 F Connects to Common when in position 2
2.4.7 TX/RF Output (J11)
The TX/RF Output connector is a 50Ω type N connector used to monitor the transmit
output signal from the offline RFT. This connector is used to test the offline unit.
2.4.8 TX/IF Input (J12)
The TX/IF Input connector is a 50Ω TNC connector used to input the IF test signal to the
offline RFT. This connector is used to test the offline unit.
2.4.9 RX/IF Output (J13)
The RX/IF Output connector is a 50Ω TNC connector used to monitor the IF output
signal from the offline RFT. This connector is used to test the offline unit.
2.4.10 TX/IF Input (J14)
The TX/IF Input connector is a 50Ω TNC connector used to receive the IF uplink signal
from the modem. The switch routes the signal to the online RFT for transmission.
2.4.11 RX/IF Output (J15)
The RX/IF Output connector is a 50Ω TNC connector used to provide the IF downlink
signal to the modem (after the signal is picked up by the antenna and routed through the
online LNA and RFT).
20 Rev. 8