EFJohnson 761X, 764X service manual Receiving And Placing Calls

OPERATION

3.3.7 BANK SELECT

Two banks of up to 16 channels each can be pro- grammed. Only the channels in the current bank are then selectable. This would allow, for example, groups of channels to be programmed for operation in differ- ent cities.

The BANK key is pressed to switch between banks, and the current bank is indicated briefly in the display as “BANK 1” or “BANK 2”. If bank select is not used, a single block of up to 32 channels can be programmed.

3.3.8 AUTOMATIC SCAN ENABLE

The transceiver can be programmed so that scan- ning is automatically enabled whenever power is turned on or the microphone is placed on-hook. Refer to the scan description in Section 3.6 for more information.

3.3.9 BACKLIGHT ON-OFF

The following backlight modes can be selected

by the LITE option switch or by pressing F3 in the power-on menu described in Section 3.3.4.

LI ON - On continuously LI OF - Always off

LI AT - Controlled by the voltage applied to pin 1 of the DB9 connector on the optional accessory cable (see “Light” in Table 4-2).

3.3.10 BEEP ON-OFF

The key beep which sounds when keys are pressed can be enabled and disabled by pressing the BEEP option switch or pressing F2 in the power-on

menu described in Section 3.3.4. Either “BP ON” or “BP OF” is displayed to indicate the current mode.

3.4 RECEIVING AND PLACING CALLS

3.4.1 INTRODUCTION

The two calls which can be placed and received are mobile-to-mobile and telephone calls. With tele- phone calls, the telephone number can be dialed using

a microphone with a telephone keypad, or up to seven telephone numbers also may be preprogrammed and then selected by pressing the DTMF key (see descrip- tion in Section 3.5.7).

3.4.2 RECEIVING A CALL

1.Turn transceiver power on and set the volume level as described starting in Section 3.3.1.

2.Select or scan the channel or channels on which you want to receive the call. Refer to Section 3.6 for more information on scanning.

3.When the message is received, take the microphone off-hook and respond. Press the microphone push- to-talk (PTT) switch to talk and release it to listen.

4.When the conversation is finished, place the micro- phone back on-hook. The microphone hanger may control features such as scanning and monitoring that are described later.

3.4.3 PLACING A CALL

1.Turn transceiver power on and set the volume level as described starting with Section 3.3.1.

2.Select the channel on which the call will be made as described in Section 3.4.

3.Regulations require that the channel be monitored before transmitting to make sure that it is not being used by anyone else. If you were to transmit while someone was talking, you would probably disrupt their conversation. Refer to “Monitoring Before Transmitting” description which follows for more information.

4.If the channel is not busy, press the microphone PTT switch to talk and release it to listen.

5.When the conversation is finished, place the micro- phone back on-hook.

3.4.4 MONITORING BEFORE TRANSMITTING

Use one of the following methods to monitor the channel before transmitting a message:

November 1998
Part No. 001-7600-001	3-4