Service manual

ALIGNMENT AND TEST PROCEDURES
7-22
Month 2000
Part No. 001-2004-601
7.5.6 FSK LINK - FSK DATA LEVEL TO SWITCH
1. On the MAC,
set S100 all Sections OFF
set S101, sections 2, 3, 4 OFF
set S101, section 1 ON (see Figure 7-20).
2. Connect a balanced AC voltmeter with 600 ohm
input impedance between balanced lines RXA+ and
RXA- of J2 located on the back of the Repeater (see
Figure
7-17).
3. On the MAC, adjust R240 for the type of line used.
Leased Line/Direct Connect (default)
-22 dBm (62 mV RMS)
Microwave/T1 (optional)
-38 dBm (10 mV RMS)
7.6 VISUAL CHECK
1. Make sure the heat sunk parts are not shorted to the
heat-sink.
2. Verify all electrolytic capacitors are installed cor-
rectly.
3. Connect 023-2000-830 Battery Back-Up as shown
in Figure
7-21.
7.7 BATTERY REVERT TEST
1. Connect the circuit as shown in Figure 7-21.
2. Turn the active load to current mode at 1A.
3. Turn enable to On, battery fault LED should be on.
4. Increase Vs1 until:
the relay engages
the voltage is present on the active load
the battery fault LED is off.
This voltage will be 22V DC ±0.5V.
5. Increase Vs1 until:
the relay disengages
the LED lights
no voltage is present at the active load.
This voltage will be 31V DC ±0.5V.
6. Decrease VS1 until:
the relay engages
the LED goes out
voltage is present at the active load.
This voltage will be 28V DC ±0.5V.
7. Set Vs1 to 26.5V DC and turn the enable line to
OFF. No voltage will be present at the active load.
Figure 7-21 BATTERY REVERT TEST SETUP
Vs1
0-35V >60W
POWER SUPPLY
Vs2
0-40V @ 3A
POWER SUPPLY
I
B+
B-
023-2000-830
BASIC BOARD MODULE
TEMP
FAN CONTROL
ENABLE
ON
OFF
ACTIVE
LOAD
(+)
(-)
V
CHGR