Agilent Technologies 5975C TAD VL MSD Troubleshooting And Maintenance Manual page 226

8
Electronics
RS-232 Serial A connector
Not currently used.
RS-232 Serial B connector
The RS-232 Serial B connector goes to the CI flow module or to the Micro-Ion
vacuum gauge, depending on the accessories installed on the MSD. It handles
data communication between the GC and the MSD.
LAN (I/O) connector
The LAN cable from the data system is connected to the I/O LAN connector.
This cable carries all data communication between the PC and the MSD.
LAN/MSD control card LEDs
The upper two LEDs indicate network communication. The two bottom LEDs
are the power and the "heartbeat" indicator.
226 5975 Series MSD Troubleshooting and Maintenance Manual