E.F. Johnson Company 751 series User Manual page 27

Conventional two-way radio
Table of Contents

Advertisement

Table 3-2 Key and Display Assign Screen Description (Continued)
Parameter
Bank Up
Selects the other bank of sixteen channels if applicable.
Moni
Pressing and holding this key for 2 seconds latches the monitor mode on as indicated by
vates the Call Guard (CTCSS/DTCSS) or 2-tone mute functions. The squelch opens for as long as the key is
held, even if the channel is not busy. To re-activate these functions again, press this switch momentarily.
High/Low Changes the power output from the level set for the channel. The change may be temporary or permanent. See
"RF Power (H/L)" in screen 2 which follows for more information.
Scan
Pressing this key toggles scanning on and off. In addition, pressing and holding the key changes the scan list
status of the selected channel unless (Inh) is programmed for the "Scan" channel parameter (seeTable 3-1). The
scan list status programmed in the channel screen then cannot be overridden. When a channel is not in the scan
list, "SKIP" is displayed. Turning power off does not change the current scan list. Either the Scan A or Scan B
mode, but not both, can be programmed. Operation is as follows:
Power-On Scan "Off" (see Table 3-5) - It starts and stops scanning with no auto restart. If the transmitter is
keyed during scanning, the scan mode is exited.
Power-On Scan "On" - It stops scanning only until the Auto Reset Timer expires (see Table 3-7). If the trans-
mitter is keyed during scanning, scan automatically resumes when the Auto Reset Timer expires.
Power-On Scan "Off" or "On" - It starts and stops scanning with no auto restart. If the transmitter is keyed
during scanning, scan automatically resumes when the Auto Reset Timer expires.
DTMF
Pressing this key enables the DTMF autodial mode. The number to be dialed is selected by the channel up/
Autodial
down keys. Then press the DTMF key again to transmit the number. DTMF codes up to 24 characters can be
preprogrammed along with a text message (see Table 3-3). DTMF characters (only) can also be programmed
(not assign-
from the keypad as follows. User programming cannot be disabled.
able to the
DTMF Keypad Models:
A-D keys)
1. Press the DTMF key and then select the desired location (d1-d5) by pressing the channel up/down keys.
2. Press and hold the DTMF key until the display indicates underscore characters (_ _ _).
3. Enter the desired character using the 0-9, A-D, *, and # keys. Press the DTMF key again to accept the
number.
Standard (7-key) Models:
1. Perform steps 1 and 2 above.
2. Select the desired character for the position using the channel up/down keys. Then press the DTMF key to
accept that character and move to the next position (e = *, F=#). Repeat to enter the rest of the characters.
3. When the desired code is entered, exit the mode by pressing and holding the DTMF key.
Re-dial
Retransmits the most recently transmitted DTMF characters. Turning the transceiver off clears the last dialed
number from memory, so this feature is then not available.
C. Tone CH
(Continuous Tone Memory Channel) This key selects the continuous tone mode. Press this key and then select
Ent
the desired tone using the channel up/down (
Tone screen described in Table 3-4.
Keyboard
Pressing and holding this key toggles the keyboard lock function. A locked keyboard is indicated by a key
Lock
in the display.
Beep
Pressing this key toggles the key beep. Either "bE OFF" or "bE on" is briefly displayed to indicate the current
condition.
Talk Around Turns the talk-around feature on and off. When the talk-around mode is selected, transmission occurs on the
receive frequency to permit mobile-to-mobile communication in some systems. Either "tk OFF" or "tk on" is
briefly displayed to indicate the current condition.
Priority CH Pressing this key selects the channel that has been designated as the priority channel in the channel screen.
Emergency
Pressing this key transmits an emergency call repeatedly at the interval specified in the Common screen. The
Repeat
emergency channel is specified in the channel screen (CH Atr column). This function cannot be assigned to the
A-D keys. A DTMF code is transmitted if it is entered on the "Emergency" line of the DTMF Autodial screen
(see Table 3-3).
Description
Scan A
Scan B
) keys. These tones are programmed using the Continuous
3-7
PROGRAMMING
. This mode deacti-
Revised July 1999
Part No. 001-7500-002

Advertisement

Table of Contents
loading

This manual is also suitable for:

754 series

Table of Contents