44214-0898 <90-00005>
P
AGE
7
Set ALB to OFF.
Return S6 to the setting required by the application in use.
Digital Loopback (DLB)
Connect a remote modem to the analog side. Set DLB, on the
front panel, to ON. After a delay of 5 seconds, the remote
modem's front panel RTS, DTR, CD, and CTS LEDs will come
on. Type any character on the remote terminal. The remote
modem’s TD and RD LEDs will blink and the remote terminal
will receive its character back.
F
INAL
C
HECK
-
OUT
For the two modems to communicate with each other, one must
be set to ORG mode and the other to ANS. These switches are on
the front panel of each unit. Make sure that the 2W/4W switch
(S7) is set per the application.
F
IG
. 3 - S
TRAP
AND
S
WITCH
L
OCATIONS
N
OTE
:
During normal operation, the
digital loopback function is used
to test the facility between the
modems. The DLB function can
also be activated by applying a
signal ground to edge connector
pin 45.
INSTALLATION
S2
1 2 3 4
S7
R44
R53
S3
S5
S1
S4
S6
1 2 3 4
OUT
IN
JP1
OUT
IN
JP2
OUT
IN
JP3
ACT
N/A
JP4
ACT
N/A
JP5
4W
2W
OFF
ON
OFF
ON
UPDATED
