Instruction manual

Adjustment Procedures

90 025-9416

12. Repeat steps #8 and #9 until the pot settings make little difference.

13. Set the AGC KILL switch back to the normal position (toward the front of the

chassis).

Note: This adjustment minimizes signal bleeding from the TO TEL back into the FROM

TEL.

14. Hang up the telephone and terminate the call.

The hybrid adjustment is complete.

STATION INTERFACE ALIGNMENT PROCEDURE

The following alignment procedures assure correct radio station interface and optimum signal

levels.

The radio station alignment consists of three separate adjustments:

• paging tone (digital) output level to the transmitter (labeled TONE)

• voice audio (analog) output level to the transmitter (labeled VOICE)

• transmitter digital deviation

Test Equipment

The following test equipment is required to align the radio station interface levels:

• touch-tone (DTMF) telephone

• AC digital voltmeter (DVM)

• communications service monitor

Database Setup

Several test records must be created in the Model 640 database before the actual adjustments can

be performed.

Follow the steps below to setup the Model 640 database for each of the station adjustments:

1. Create a new Pager Definition in the Model 640 database as follows:

• Select 1 - Subscriber Phone Numbers from the main menu.

• Select 5 - Pager Definitions Databases from the Subscriber Phone Numbers

menu.

• Select 1 - TwoTone from the Pager Definitions menu.

• Enter N to create a New record.

• Fill in the record as shown below.