Comtech EF Data RADYNE RRS11 Installation And Operation Manual page 20

RRS11 Solid-State Transfer Switch
Table 3-1A, RRS11-L L-Band Rear Panel Connectors
Connector
Nomenclature
ID
J1 Online Status
Output
J2 Prime Mod Control
J3 Backup Mod Control
J4 Monitor A Input
J5 Monitor B Input
J6 On-Line Output
J7 Off-Line Output
J8 L-Band Input A
J9 L-Band Input B
Each modulator has a 9-Pin D-Sub Connector that connects to the RRS11 switch. A 1:1 cable is
connected from each modulator to the RRS11 switch. The pinout for the control connector is
listed in Table 3-2.
Pin No. Signal Name
5 Signal Ground
9 Backup Select
1 +DC
2 nPrime_Sel
7 nBackup_Sel
8 Fault-In
4 Fault-Out
3 Switch-State
6 NC
MN-RRS11
Rev. 3
9-Pin D-Sub Switch Status Form-C Relay Outputs
9-Pin D-Sub Control Connector From Prime Modulator
9-Pin D-Sub Control Connector From Backup Modulator
SMA 50 Ohm from Modulator A Monitor Output
SMA 50 Ohm from Modulator B Monitor Output
N-Type 50 Ohm, Output of On-Line Modulator to Uplink Chain.
N-Type 50 Ohm Output of Monitor Port of Off-Line
Table 3-2. Switch Prime/Backup Control Pinout
Direction
Input
Output
Input
Input
Input
Input
Output
Output
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Description
Modulator
SMA 50 Ohm From Modulator A
SMA 50 Ohm From Modulator B
Description
Modulator GND
One modulator is designated as Backup. This line
is tied low on the Backup Mod Control connector.
+12V DC Power
Forces On-Line Output to Prime
Forces On-Line Output to Backup
Fault Output From Modulator
Connects to Fault-In Monitor on Modulator
Switch State Monitor.
Logic '1' = Prime Online
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Operation
3–4