Dantel B18-05776 Series Manuel d'installation et d'utilisation - Page 9
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ALIGNMENT PROCEDURES
F
. 7 - F
P
, 44022
IG
RONT
ANEL
XMT LEVEL
ADJUST
44022-00
STATION
INTERFACE
Busy
STATUS LED
Inc. Call
INDICATORS
Off Hook
TRANSMIT
XMT
LINE TP
LINE
XMT
DISTRIBUTION
OUTPUT TP
DIST
GND
XMT DROP
2W/4W
TEST JACKS
DROP
MON
TEST
RST
TEST/RESET
SWITCH
RECEIVE
RCV
LINE TP
RCV
LINE
DISTRIBUTION
OUTPUT TP
DIST
GND
RCV DROP
4W
TEST JACKS
DROP
MON
B11-44022-00 REV__
RCV LEVEL
ADJUST
05776-1198 <90-00124>
A
ll straps and levels are factory-set. If necessary, refer to the
steps below to align the 44022, 44118, and 46105 modules.
Equipment Required
♦
Signal Generator sending a 1kHz, 600 ohm signal at various
levels.
♦
600-ohm Level Meter (with and without 600-ohm termina-
tion).
44022 S
L
I
UBSCRIBER
INE
NTERFACE
Refer to Fig 7.
1.
Remove power from the shelf.
2.
Plug in the 44022-00 module.
3.
Apply power. No LEDs should light. If the BUSY LED is on, press
the TEST/RST button twice to turn the LED off.
4.
Insert a test tone or test oscillator at the 4W RCV input (pins 2
and 4) or at the LINE RECEIVE test points. Insert a level meter
(unterminated) at the LINE RECEIVE, test points.
Set the frequency to approximately 1 KHz. Set the level to system
test-tone level (-16 dBm).
NOTE:
Any source device that loads down the input must be
disconnected.
5.
Connect the level meter (600 ohm termination) to the DROP RE-
CEIVE jack.
6.
Read -13 dBm. Adjust the RECEIVE level control as required.
RCV PAD is set for -3 to +16 dBm range.
7.
When finished setting levels, press the TEST/RST button. The
OFF HOOK LED goes off.
8.
Remove the meter and test oscillator connections.
9.
Insert the test oscillator at the DROP TRANSMIT jack.
10.
"OFF-HOOK" LED lights.
NOTE:
If the LED does not light, the oscillator is not providing a
resistive path to ground. Place a 600 ohm load across the
oscillator output.
11.
Connect an unterminated level meter across the oscillator termi-
nals.
12.
Set the level to 0 dBm
13.
Move the level meter (terminated) to the LINE TRANSMIT test
points. (The level meter should be unterminated if the VF bridge is
plugged in.)
A
P
LIGNMENT
ROCEDURE
. . .
CONTINUED
P
9
AGE