Vertical comdial DX-120, Руководство по установке и обслуживанию

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I
NSTALLING THE
DX-120
DX-120 Installation and Maintenance Manual
- 70 -
Installing T1 or ISDN (T1/PRI) Card (continued)
9) Use the four brass-color standoffs supplied with the T1 Card to secure the T1 in position.
10) Reposition the CPM over the installed COM4 and secure using the four brass-color standoffs
previously removed (see step 7).
11) Connect the T1 Card ribbon cable to the J7 connector or the CPM card..
HINT
Press firmly (but not forcefully) on the connector to secure a good connection.
12) Make all cable/wiring connections as required.
CAUTION
The FCC requires that wiring of CO lines into a KSU be separated from
wiring of station apparatus into a KSU. Therefore you must use separate
cables for wiring stations and CO lines.
13) Replace the KSU cover and secure with cover screws.
14) Restore KSU power.
Connecting a Serial Cable for PC-DBA
•
You can connect PC-DBA to the to DX-120 system to set up all user database programmable features and
system operations.
-
This connection is rarely permanent and is typically performed only during routine systems database
updates and changes by a qualified technician.
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Connection of the PC to the DX-120 is accomplished through the serial data port on the CPM labeled
“PCDBA.”
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Connection is simplified by means of a straight-through, 9-pin, female to male, serial cable. (Use Radio
Shack model 26-117B for good results.)
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Connection to the PC is made via an available 9-pin serial port connector that is designated as COM1 or
COM2 in the PC configuration.
•
Once the cable is linked between the PC and the DX-120 CPM PCDBA port, you can use PC-DBA to program
the DX-120 system and to back up your customer’s database.
1) Be sure that the entire system is turned off.
2) Remove the KSU 1 cover (four screws at each corner).
3) Install a static discharge wrist strap on your bare wrist, and adjust it for a snug fit.
CAUTION
Be sure that the strap is touching bare skin and is not isolated by clothing.
4) Connect the wrist strap cord between the wrist strap and an AC or earth ground.
5) Connect a static discharge wrist strap to a suitable earth ground.
CAUTION
Circuit boards are susceptible to damage caused by electrostatic
discharge. You must keep this in mind as you handle the circuit boards.
For additional information, see Vertical publication IMI01-005, Handling of
Electrostatically Sensitive Components.
Installing T1 or ISDN (T1/PRI) Card (continued on next page)