P
AGE
12
44202-0898 <90-00004>
INSTALLATION
3.
Action
: Remove the terminal connection and place the TEST and
DLB switches in the OFF(down) position.
4.
This completes the digital loopback test and the alignment and test
procedure.
OPERATION
O
peration of the 44202 consists of turning front panel
switches OFF and ON for level setting and testing as de-
scribed in the
Installation
section. While the 44202 is being used
for normal data transmission, there are no user operations to be
performed.
LEDs
Six (6) green LEDs on the front panel indicate:
♦
TD (Transmit Data)
♦
RD (Receive Data)
♦
RTS (Ready To Send)
♦
CD (Carrier Detect)
♦
DTR (Data Terminal Ready)
♦
CTS (Clear To Send)
Each of the LEDs operates when the modems activity is appropri-
ate to the LEDs designation.
Front Panel Switches
There are three (3) recessed switches are used for testing the
modules operation. They are:
♦
ON TEST
♦
ON DLB
♦
ON ALB
Front Panel Jacks
Two (2) normal-through jacks are provided for connecting to the
facility. These are:
♦
XMT LINE
♦
2W LINE
The jack labeled 2W LINE is the receive line jack. There are also
two (2) jacks labeled:
♦
XMT MON
♦
2W MON
F
IG
. 5 - F
RONT
P
ANEL
V
IEW
CONTINUED
. . .
UPDATED
44202-00
202 MODEM
A11-44202-00 REV__
ON
TEST
MON
XMT
4W
2W
LINE
MON
LINE
ON
ABL
ON
DLB
TD
RD
RTS
CD
DTR
CTS
XMT
LEVEL
RCV
GND
RCV