Ds3 Line Dade - Alcatel MDR-8000 User Manual

DS3 LINE DADE

5.11
See Figure 5 - 14 and follow the procedures to check, and if necessary adjust the differential
absolute delay between A and B frame sync pulses.
Note
If the A pulse trails the B pulse, the A-side of the
radio has more delay than the B-side. If the B pulse
trails the A pulse, the B-side of the radio has more
delay than the A-side.
a Switch A-RCVR
on line.
A SIDE
I/O INTFC
(ON LINE)
XMT
AUX
SC
ALM
RCVR
ON
RAD
LOF
WYSD
DS1
WYSD
ALM
RAD DADE
LINE 1
DS3
AUGN
1
LINE 2
2
LINE 3
3
Connect to
DS3 Align 1
5-30
LBO CARD
20 ns/DIV
A FRAME
SYNC PULSE
CHANNEL 1
B FRAME
SYNC PULSE
CHANNEL 2
OSCILLOSCOPE
CH1 CH2
Figure 5 - 14 DS3 Line DADE (Sheet 1 of 4)
b Connect oscilloscope as shown.
c Set oscilloscope controls:
Control Setting
Volts/Div 2V
Time/Div 20 ns
Trig Slope +
Int Trig Set to trigger on
on-line side.
Note
DS3 Radio DADE must
have been properly set
before starting this DS3
Line DADE procedure.
B SIDE
I/O INTFC
(OFF LINE)
XMT
AUX
SC
ALM
RCVR
ON
RAD
LOF
WYSD
DS1
WYSD
ALM
RAD DADE
d Adjustment for
aligning leading
LINE 1
DS3
AUGN
edge of frame sync
1
pulse on Channel 2
LINE 2
with frame sync
2
LINE 3
pulse on Channel 1
3
Adjust DS3 Align ( )
control to move
frame synbc pulse
on Channel 2 as
follows:
CW
Connect to CCW
DS3 Align 1
MDR-1047
09/08/05