E F Johnson Company 2424140 Benutzerhandbuch
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GENERAL OPERATION
SECTION 3 GENERAL OPERATION
3.1 TURNING POWER ON AND SETTING
VOLUME
3.1.1 POWER UP
Power is turned on and off by the top panel On-
Off/Volume switch. When power is initially turned on,
the following events occur:
the following events occur:
•
The software version number is displayed.
•
A self test is performed.
•
The currently selected zone is displayed.
•
If a conventional P25 channel is selected, the
Individual ID of the radio is displayed.
Individual ID of the radio is displayed.
•
If a SMARTNET/SmartZone or P25 Trunked
channel is selected, the Unit ID of the radio is
displayed.
channel is selected, the Unit ID of the radio is
displayed.
•
A tone sounds (if tones are enabled)
•
The selected channel alias is displayed continuously
when power-up is complete.
when power-up is complete.
Programming determines if the radio powers up
on the last selected zone or the pre-programmed home
zone. Refer to Section 3.3 for information on the
channel that is selected. The minimum volume level
may be set by programming. This can prevent missed
messages resulting from inadvertently turning the
volume to an inaudible level.
zone. Refer to Section 3.3 for information on the
channel that is selected. The minimum volume level
may be set by programming. This can prevent missed
messages resulting from inadvertently turning the
volume to an inaudible level.
3.1.2 STANDARD AND SOFT POWER DOWN
To turn power off, rotate the On-Off/Volume
control counterclockwise until a click occurs. Power
may remain on for an instant after turn-off occurs.
may remain on for an instant after turn-off occurs.
A soft power down feature can be programmed to
prevent radio power from being turned off by acciden-
tally turning the on-off/volume control. Any side
button can be programmed for this function in addition
to its normal function. Then for power to turn off, this
button must be pressed during or after power is turned
off in the normal manner using the knob (there is no
time out).
tally turning the on-off/volume control. Any side
button can be programmed for this function in addition
to its normal function. Then for power to turn off, this
button must be pressed during or after power is turned
off in the normal manner using the knob (there is no
time out).
3.1.3 SETTING VOLUME LEVEL
The volume level is adjusted by the top panel
volume control knob or by option buttons programmed
for the Up/Down volume function. When the buttons
are used, the volume control function of the knob is
disabled (it is still used to switch power). Volume
buttons may be used instead of the knob, for example,
if accidental turning of the volume knob is a problem.
are used, the volume control function of the knob is
disabled (it is still used to switch power). Volume
buttons may be used instead of the knob, for example,
if accidental turning of the volume knob is a problem.
When the volume control buttons are used, the
number of steps (ticks) required to change the volume
from the minimum level to maximum level is
programmable for 1-50. For example, if “20” is
programmed, there are 20 adjustment steps from
minimum to maximum volume. Only one volume
control button can be programmed if desired and
wrap-around then occurs after the maximum or
minimum level is selected.
from the minimum level to maximum level is
programmable for 1-50. For example, if “20” is
programmed, there are 20 adjustment steps from
minimum to maximum volume. Only one volume
control button can be programmed if desired and
wrap-around then occurs after the maximum or
minimum level is selected.
The radio can also be programmed so that volume
control is also be disabled by the Keypad Lock feature.
Refer to Section 3.6 for more information.
Refer to Section 3.6 for more information.
The relative volume level can be determined by
the position of the index on the volume knob or by a
reference signal as follows:
reference signal as follows:
•
If a key press tone is enabled, a short tone sounds
when a key is pressed.
when a key is pressed.
•
If a conventional channel is selected and the
Monitor option switch or menu parameter is
programmed, pressing that switch unsquelches the
receiver and either voice or background noise is
heard (see Section 5.3). If a SMARTNET/Smart-
Zone or P25 Trunked channel is selected, the
receiver cannot be manually unsquelched.
Monitor option switch or menu parameter is
programmed, pressing that switch unsquelches the
receiver and either voice or background noise is
heard (see Section 5.3). If a SMARTNET/Smart-
Zone or P25 Trunked channel is selected, the
receiver cannot be manually unsquelched.
3.2 POWER-UP PASSWORD
3.2.1 GENERAL
The power-up password feature prevents unau-
thorized use of the radio by locking the keypad on
power up until the proper password is entered. This
feature is enabled or disabled by programming.
power up until the proper password is entered. This
feature is enabled or disabled by programming.
When it is enabled, “ENTER PSWD” is briefly
displayed when power is turned on. The eight-digit