TRANSCEIVER PROGRAMMING

Timers

Tx Time-Out Timer - This timer limits the length of transmissions (Section 2.3.9). Times up to 3 minutes, 45 seconds in 15-second steps can be programmed.

Penalty Timer - This timer disables transmitting after the time-out timer expires (Section 2.4.7). Times up to 3 minutes, 45 seconds in 15-second steps can be programmed.

Conversation Timer - This timer limits the total length of a conversation (Section 2.4.8). Times up to 7.5 minutes in 0.5-minute steps can be programmed.

Keypad Selectable CTCSS/DCS - Selects if CTCSS/ DCS (Call Guard) squelch codes can be reassigned using the keypad (see Section 2.4.6).

Busy Channel Override - Selects if the busy channel lockout feature can be overridden by quickly releasing and then pressing the PTT switch (see Section 2.4.5).

NOTE: The conventional scan lists cannot be programmed until all the conventional channels are programmed. Therefore, first program the channels as described in Sections 3.5.3 and 3.5.4.

To modify a list, click and the screen which follows is displayed. Select the desired scan list in the box on the top and then select the zone and the channels from that zone to be included. Repeat for each zone. Do this for each list programmed. The button deletes the selected channel(s) from the scan list.

Conventional System Modify Scan List Screen

The following parameters are programmed in the

Conventional System Scan List Screen on the left.

Keypad Editing

This function selects if the user is allowed to edit the scan list. This requires the Scan Edit option switch

Conventional System Scan List Screen as described in Section 2.4.11. User editing can be enabled and disabled on each scan list.

Scan List Button

Scan Mode

Clicking the Scan List button displays the preceding screen which is used to program the conven- tional scan lists described in Section 2.4.11. Only Scan List 1 is available with limited keypad (3-key) models.

Sets the channel on which transmissions occur when the PTT switch is pressed while scanning. A different mode can be programmed for each scan list. In addition, it selects if priority sampling is used and

November 1999

 

Part No. 001-7780-500

3-10

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EFJohnson 7780 service manual Timers, Conventional System Modify Scan List Screen, Keypad Editing, Scan List Button