Motorola BT100 operation manual Jumper position Description

5-2Installation

8Apply power to the unit and allocate a few minutes for warm up.

9Check the AC voltage setting (Figure 2-8).

Jumper position Description

60 V (J2 to J4)

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 (J2 to J3)

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.

10Check the DC voltage. Verify that it is between 23.6 V and 24.4 V and reinstall the input pad.

11If necessary, rebalance the amplifier following the instructions in Section 3, “Amplifier Setup.”

12Check the tightness of the electronics chassis cover screws (10 to 12 in-lbs.) and hold-down bolts (18 to 22 in-lbs.).

13Check the condition of the RF and weather gaskets and replace them if necessary. If needed, also apply a light coating of silicone grease.

14Ensure that the electronics chassis handles are folded down and that any cables between the base and lid are not pinched.

15Close 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

BT100 Installation and Operation Manual