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

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

Installation RSU-503 Redundancy Switch Unit The MTI connector is a 26-pin circular female connector with the following pinouts: Pin # Name Function RS-232 RS-485 A GND -RX/TX B -RX/TX C +RX/TX D CTS +RX/TX Clear to Send E RD/RX Receive Data F RTS Ready to Send G TD/TX Transmit Data H DSR Data Set Ready J GND Ground K Reserved L EXT_PWR Output, 11V for KP-10 M N EXT FLT1 #A TWT FLT input for primary channel P EXT FLT1 #B TWT FLT input for secondary channel R N/C S Ground Chassis Ground T Reserved U Reserved V Reserved W Reserved X FLT NC Summary fault relay, connects to COM with fault Y FLT COM Summary fault relay, COMMON Z FLT NO Summary fault relay, opens with fault a Reserved b Reserved c Reserved Note: Clear to Send (CTS) is tied to Ready to Send (RTS) in RS-232 mode. 2.4.13 GND (ERDE) GND is a #10-32 stud for the purpose of connecting all units to a common chassis ground. 22 Rev. 8

RSU-503 Redundancy Switch Unit Installation 2.5 External Cables Refer to Figures 2-4 and 2-5 for diagrams of the two different external multi-conductor cables used with the switch in a redundant system. Figure 2-4. RSU-503 M&C, J4 and J8 (to RFT) Rev. 8 23

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