Service manual

ALIGNMENT AND TEST PROCEDURES
7-18
Month 2000
Part No. 001-2004-601
2. Inject a 1.2 kHz tone from a balanced 600 ohm
source, at the level determined by the type of line
used, into TXA+ and TXA- of J2 located on the
back of the Repeater (see Figure 7-17).
Leased Line/Direct Connect (default)
-22 dBm (62 mV RMS)
Microwave/T1 (optional)
-38 dBm (10 mV RMS)
3. On the MAC, adjust R242 to obtain -10 dBm
(245 mV RMS) measured at J100/J103.
Figure 7-13 SWITCH SETTINGS
Figure 7-14 J2 TERMINAL BLOCK
FSK Data Level Adjustment From Repeater
Separate Data Path (4-Wire) Optional Setting.
1. On the MAC, set S100 Sections 1, 4, 5, 8 OFF; 2,
3, 6, 7 ON; S101 Sections 2, 3, 4 OFF; 1 ON
(see Figure 7-13).
2. On the MAC, adjust R240 to obtain -16 dBm
(123 mV RMS) measured at J100/J103.
3. Press F2 to advance to the next screen.
4. Connect a balanced AC Voltmeter with a 600 ohm
input impedance between balanced lines RXS+ and
RXS- of J2 located on the back of the Repeater (see
Figure
7-12).
5. On the MAC, adjust R241 for the type of line used.
Leased Line/Direct Connect (default)
-12 dBm (194 mV RMS)
Microwave/T1 (optional)
-28 dBm (31 mV RMS)
FSK Data Level Adjustment From Repeater
Data over Voice (2-Wire) Default Setting.
NOTE: This adjustment can only be done after
Voice Audio To Switch is completed.
1. On the MAC, set S100, all Sections OFF; S101
Sections 2, 3, 4 OFF; 1 ON (see Figure
7-13).
2. Connect a balanced AC Voltmeter with a 600 ohm
input impedance between balanced lines RXA+ and
RXA- of J2 located on the back of the Repeater (see
Figure
7-17).
3. Adjust R240 on the MAC for the type of line used.
Leased Line/Direct Connect (default)
-22 dBm (62 mV RMS)
Microwave/T1 (optional)
-38 dBm (10 mV RMS)
O
N
2
1
8
7
6
5
4
3
O
N
2
1
4
3
R
XS
-
(
GN
D)
R
XS
-
R
XS
+
(
A
U
DI
O)
R
XS
+
(
F
S
K
)
R
X
S
-
(
GN
D)
T
X
S
-
T
XS
+
(
A
UD
I
O
)
T
X
S
+
(
F
S
K
)
S
1
0
0
S
1
0
1
F
S
K
T
X
S
+
2
1
33
34
RXA+
RXA-
J2
TXA+
TXA-