ABB DSQC509 3HAC5687-1 Dual-port communication module

ABB DSQC509 3HAC5687-1 Dual-port communication module

Clock Select Header (J12) for Serial Port 2 The MVME162 is shipped from the factory with the SERIAL PORT 2 header configured for asynchronous communications (i.e., jumpers removed). To select synchronous communications for the SERIAL PORT 2 connection SRAM Battery Backup Source Select Header (J20) The MVME162 is factory-configured to use VMEbus +5V Standby power as a backup power source for the SRAM (i.e., jumpers are installed across pins 1 and 3 and 2 and 4). To select the onboard battery as the backup power source, install the jumpers across pins 3 and 5 and 4 and 6. Note For MVME162s without optional VMEbus interface (i.e., without VMEchip2 ASIC), you must select the onboard battery for the backup power source. Caution Removing all jumpers may temporarily disable the SRAM. Do not remove all jumpers from J20, except for storage

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