Connecting A Serial Cable For Pc-Dba - Comdial DX-80 Installation And Maintenance Manual

4. Using an eighth-inch mini plug, wire the DX-80 BELL contact in series with an external 24vdc power supply
and 24vdc bell or ringing device. Important: Use only 24v or less voltage supply and Direct Current
(dc).
5. Program LBC operation for CO Line ringing according to CO Line Group
assignments. See Loud Bell Control in the features description section of this
manual.
6. To control a gate or door:
7. Remove the KSU cover (four screws at each corner) of KSU1.
8. Connect grounded wrist strap to a suitable earth ground. (If a grounded wrist
strap is not available, bleed any static charge from your body before touching
circuit modules by touching the gold-painted surface of the inside of the KSU
cabinet. If the KSU is properly grounded this will momentarily discharge static
electricity from your body. NOTE: A GROUNDED WRIST STRAP IS THE
BEST METHOD OF ASSURING THAT STATIC ELECTRICITY DOES NOT
DAMAGE CIRCUIT MODULES.)
9. Locate the CPM and "BELL" connector jack on the CPM.
10. Using an eighth-inch mini plug, wire the DX-80 BELL contact in series with an
external 24vdc power supply and 24vdc door opening device. Important: Use
only 24v or less voltage supply and Direct Current (dc).
11. Program LBC operation for External Page operation. Door/Gate operation is
accomplished by dialing the External Page code (this code can be
programmed onto an available Flexible Feature Button). See Loud Bell Control
in the features description section of this manual.

Connecting a Serial Cable for PC-DBA

PC-DBA (PC-Database Administration) can be connected the to DX-80 system for use
to set all user database programable features and system operations. (See Database Administration – via PC-DBA.)
This connection is rarely permanent and is typically performed only during routine systems database updates and
changes by a qualified technician. Connection of the PC to the DX-80 is accomplished through the serial data port on
the CPM labeled "PCDBA." 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.)
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-80 CPM, PCDBA port, PC-DBA can be used to program the
DX-80 system and backup the user database.
Serial Cable Installation Procedure
Follow these steps to connect a serial cable for PC-DBA:
1. Remove the KSU cover (four screws at each corner) of
KSU1.
2. Connect grounded wrist strap to a suitable earth ground. (If
a grounded wrist strap is not available, bleed any static
charge from your body before touching circuit modules by
touching the gold-painted surface of the inside of the KSU
cabinet. If the KSU is properly grounded this will
momentarily discharge static electricity from your body.
NOTE: A GROUNDED WRIST STRAP IS THE BEST
METHOD OF ASSURING THAT STATIC ELECTRICITY
DOES NOT DAMAGE CIRCUIT MODULES.)
3. Locate the CPM and "PCDBA" serial port on the CPM.
4. Connect the male end of the 9-pin serial cable into this PCDBA port.
5. Connect the other end (female) of the 9-pin serial cable to the PC serial port to be used with PC-DBA.
6. Refer to the instructions for operating PC-DBA in the features section of this manual.
P7290 IMM
DX-80 I M
NSTALLATION AND AINTENANCE
2-17
M
ANUAL
CPM
"PCDBA" serial port connector
(straight-through, 9-pin, male-
to-female cable required)