Motorola BT100 User Manual
Page 45
5-2
Installation
BT100 Installation and Operation Manual
8
Apply power to the unit and allocate a few minutes for warm up.
9
Check the AC voltage setting (Figure 2-8).
Jumper position Description
60
V
(
J
2
to
J
4
)
The voltage must be greater than 38 VAC as read with a true rms voltmeter or 42 VAC
when using a conventional, average reading, AC voltmeter.
90
V
(
J
2
to
J
3)
The voltage must be greater than 55 VAC when read with a true rms voltmeter or
61 VAC when using a conventional, average reading, AC voltmeter.
10
Check the DC voltage. Verify that it is between 23.6 V and 24.4 V and reinstall the input
pad.
11
If necessary, rebalance the amplifier following the instructions in Section 3, “Amplifier
Setup.”
12
Check the tightness of the electronics chassis cover screws (10 to 12 in-lbs.) and hold-down
bolts (18 to 22 in-lbs.).
13
Check the condition of the RF and weather gaskets and replace them if necessary. If needed,
also apply a light coating of silicone grease.
14
Ensure that the electronics chassis handles are folded down and that any cables between
the base and lid are not pinched.
15
Close the housing and use a torque wrench to sequentially and progressively tighten the
housing bolts to a final torque of 15 ft-lbs in the sequence specified on the housing cover and
illustrated in Figure 5-2.
Figure 5-2
Torque sequence