E F Johnson Company 2424140 Benutzerhandbuch

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GENERAL OPERATION
15
Proceed as follows to select channels using this 
mode:
1. Enable the direct Channel Select mode by pressing 
the Channel Select option switch or selecting the 
“Chan Selct” menu parameter. The alias and 
sequential number of the current channel are 
alternately displayed.
2. Select the desired channel using the Up/Down keys 
or directly enter it using the 0-9 keys (if available). 
If using the 0-9 keys, the radio attempts to display 
the entered number after the 3rd digit is entered or 
approximately 2 seconds after the last key is 
pressed. 
3. To exit the this mode and select the entered channel, 
press the Channel Select switch again or the F2 key. 
To exit without changing the channel, press the F1 
key. This mode is also exited automatically without 
changing the channel after approximately 1 minute 
of no activity.
NOTE: The Channel Select function should probably 
not be assigned to a number key because pressing that 
key to select a channel then exits the select mode. 
Other features of this mode are as follows:
When using the Up/Down keys, wrap-around to the 
lowest zone/channel occurs after the last channel in 
the highest programmed zone is displayed and vice 
versa. For example, if Zone 1/Channel 5 is the 
highest programmed channel, wrap-around occurs 
after Zone 1/Channel 16 is displayed.
When an unprogrammed channel is displayed, the 
sequential channel number and “Unprogramd” are 
alternately displayed. 
If an invalid channel number is entered using the 
0-9 keys, or the F2 or Channel Select option switch 
is pressed with “Unprogrammed” displayed, an 
error tones sounds, “Invalid” is briefly displayed, 
and the displayed channel does not change.
The rotary Channel Select switch may not correctly 
indicate the selected channel after direct channel 
selection is used. However, if this switch is enabled 
and rotated, it selects the channel it is indicating. For 
example, if the switch index is pointing to channel 3 
and channel 15 of the current zone is being 
displayed, rotating it to channel 4 selects channel 4 
of the current zone.
If the rotary Channel Select switch is enabled, the 
radio always powers up on the channel it is 
selecting. 
If it is disabled, the radio can be programmed to 
power-up on the last selected or home channel 
number of the last selected or home zone. With the 
“Last Zone”/“Home Channel” configuration, the 
programmed home channel number of the last active 
zone is selected. If it is not programmed, “Unpro-
grammd” is displayed. With earlier models, the last 
selected channel is displayed when powering up on 
the last selected zone, and channel 1 is displayed 
when powering up on the home zone.
3.4 LOW BATTERY INDICATION
3.4.1  GENERAL
NOTE: If the radio contains encryption keys and is not 
programmed for infinite key retention, be sure to reat-
tach a battery within approximately 30 seconds to 
prevent the loss of these keys (see following). 
A low-battery condition is indicated by the 
 
icon in the display. The battery should be recharged or 
replaced as soon after this indication appears. Once 
this indication appears, it stays on until power is 
cycled.
Seq. Ch. No.
Zone
Channel
1
1
1
16
16
17
2
1
32
16
33
3
1