E.F. Johnson Company 5100 ES, Руководство по эксплуатации

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ES Series Models II/III Portable Radio Operating Manual 3-5
General Operation
3.3.2 Channel Select
Channels are selected by the rotary 16-position switch on the top panel. The alias
(identification) for the selected channel/group is displayed continuously during normal
operation.
When an unprogrammed channel is selected, “Unprogramd” is displayed and a tone
sounds (if tones are enabled). When conventional channels are selected and the Display
Information option button or menu parameter is programmed, either the channel
frequency or alias can be displayed (see Section 5.8).
The channel selector knob can also be disabled by programming. Channels must then be
directly selected as described next (if applicable). It may be desirable to disable the
channel select knob when direct selection is used in order to prevent confusion since the
channel knob then may not indicate the selected channel.
The radio can also be programmed so that the channel select control is also be disabled by
the Keypad Lock feature (Section 3.6) similar to the volume control described in Section
3.1.3.
3.3.3 54 Channel / 16 Zone Feature
This is an optionally purchased programmable feature that allows for more than 16
channels in a zone. When enabled, the radio can be configured with up to 16 zones and 54
channels per zone.
3.3.4 Direct Zone / Channel Selection
The Direct Channel Select feature is available if the Channel Select option switch or menu
parameter is programmed. This feature allows channels to be directly selected using the
DTMF keypad numeric keys (DTMF models only) or Up/Down buttons (all models).
For direct selection purposes, channels are numbered sequentially starting with the lowest
zone. Each zone can be programmed with up to 16 channels, so Zone 1 channels are
numbered 1-16, Zone 2 channels 17-32, and so on as shown below. For example, Zone 1/
Channel 16 is selected by Channel 16, and Zone 2/Channel 16 is selected by Channel 32.