Data General AViiON 5000 Series, Customer Documentation

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Connecting External Devices to VME Option Boards
4-43
014–001867
4. Connect the optical bypass switch to the FDDI ring by attaching the
appropriate cables between the next device and the MIC receptacles on the
optical bypass switch, as shown in Figure 4–51. Note that the MIC connectors
are keyed; you can connect them only one way. See Table 4–12 for a list of
cables offered by Data General.
MIC connector
(to Secondary Rx, Primary Tx,
Physical unit B)
(to Secondary Tx,
Primary Rx,
Physical unit A)
Figure 4–51 Attaching Optical Bypass Switch MIC Connectors
Optical Bypass Switch Connector Signals
Your VFC controller supports an optical bypass switch that uses a 6-pin mini-DIN
connector. Figure 4–52 shows the signals and pin numbers for the optical bypass
switch DIN connector.
Pin Signal
1 +5 V secondary switch
2 +5 V primary switch
3 GND primary switch
4 GND secondary switch
5 Common to pin 6
6 Common to pin 5
1 2
3
4
5
6
Figure 4–52 VFC Optical Bypass Switch Connector Signals
End of Chapter