Service manual

INTRODUCTION

1-7

March 2000

Part No. 001-3139-502

1.3 VOTER SYSTEM ALIGNMENT

Note: See Section 3.11 for 2000 RDM alignment.

1.3.1 PRELIMINARY

1. Verify that S3, section 5 in the MLM is set for the

proper mode (see Figure 1-23). For a Voter system

the switch should be “up” or “On” indicating Voter

Mode. For a Non-Voter system, the switch should

be “down” or “Off” indicating Non-Voter Mode.

Figure 1-7 MLM S3 SWITCH SETTINGS

2. Record the settings of S9 in the MLM drawer.

1 ______ 2 ______ 3 ______ 4 ______

Figure 1-8 MLM S9 SWITCH

3. Put S9 into Test Mode by setting the switch as

shown in Figure 1-9. Reset switch S8 (see Figure

1-23) which must be pressed after changing the

switches to actually enter the selected mode.

Figure 1-9 MLM S9 TEST MODE

4. Record the settings of S2 in the MLM drawer.

1 _____ 2 _____ 3 _____ 4 _____

5 _____ 6 _____ 7 _____ 8 _____

Figure 1-10 MLM S2 SWITCH

5. Set the MLM drawer S2 switches as shown in Fig-

ure 1-11. This enables the repeat gate, logic squelch

gate and the transmitter.

Figure 1-11 MLM S2 SWITCH SETTING

NOTE: Either of the following two procedures can be

used to setup the RDM and RVM alignment. Procedure

1 may not work in some systems due to specific instal-

lation issues. Procedure 2 will provide repeatable and

consistent results when using properly calibrated test

equipment and is the preferred

procedure.

NOTE: Refer to Simulcast System Alignment manual

(Part No. 004-0690-300) for the alignment procedure

in a Simulcast System.

MSB

LSB