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Data modules and asynchronous data units
555-233-116
56 Issue 4 October 2002
Connecting multiple data modules to the system
!
CAUTION:
You must install a 105D or 105C isolating data interface adapter when
connecting data modules to equipment in DC-powered cabinets.
You install multiple data modules in a data mounting on the DEFINITY. A Z77A
data mounting can take up to 8 data modules. See Figure 13.
Figure 13. Z77A data mounting
Proceed as follows.
1. Set data-module hardware options before installing the hardware in the
mounting.
2. Release the horizontal retaining bar at the front of the data mounting by
pulling out the plungers at the left and right sides of the bar.
3. Pull the retaining bar out and down.
1. Z77A data mounting
2. Data module (7400A shown)
3. Retaining bar
4. Retaining bar plunger
5. Twist-lock cable retainers
z77a KLC053096