E.F. Johnson 984X SERIES, Дополнение к руководству по обслуживанию

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OPERATION
2-4
April 1999
Part No. 001-9800-600
1. The backlight turns on.
2. All segments of the alphanumeric display are
enabled and the last seven digits of the transceiver
part number (see Section 1.4) are displayed on the
top line very briefly. For example, a 800 MHz, high
tier, LTR-Net, 15-watt transceiver is indicated as
“9883602”. The eighth display digit is reserved for
future use and is always “0”.
3. If there are unread error codes, the last code that
occurred is displayed as “ CODE xx” on the
bottom line (see Section 2.14).
4. A beeps sounds (if tones are enabled) and the trans-
ceiver is ready to be used.
2.4.2 DETERMINING VOLUME LEVEL
The relative volume setting can be determined by
noting the position of the index on the volume knob. It
may also be possible to enable a reference tone or
audio for setting the volume level using one of the
following methods:
l If key press tones have been enabled as described in
Section 2.5.15, a short tone can be enabled by rotat-
ing the select switch or pressing an option switch.
l If a conventional system is selected, take the micro-
phone off-hook to enable the monitor mode (unless
off-hook detect is disabled). If someone is talking,
audio is then heard. If nobody is talking, the squelch
control can also be adjusted as described in Section
2.4.7 and noise should be heard. Refer to Section
2.11.1 for more information on the monitor mode.
When an LTR-Net or LTR system is selected, the
receiver cannot be manually unsquelched.
2.4.3 BACKLIGHT OPERATION
The display and keypad backlight can be
controlled by the menu BACKLGHT parameter. The
three states that can be selected are Bright, Dim, and
Off. It is in the selected condition whenever power is
turned on. If this menu parameter has been disabled by
programming, the backlight is fixed in one of these
states.
2.4.4 SYSTEM/GROUP DISPLAY
INFORMATION
Up to 99 systems and up to 99 groups per system
can be displayed. Either a numeric or alpha tag display
mode can be selected by the user if the menu S/G
DISP menu parameter is enabled (see Section 2.6.2). If
not, it is fixed by programming.
When the numeric mode is selected, the system
and group numbers are indicated on the top line of the
display as Sxx and Gxx, and the group alpha tag (up to
eight characters) is displayed on the bottom line (the
system alpha tag is not displayed). For example,
System 1, Group 1 (CAR 220) is displayed as follows:
Numeric Display Mode
When the alpha mode is selected, the system
alpha tag is displayed on the top line, and the group
alpha tag is displayed on the bottom line (the system
and group numbers are not indicated). For example, a
“SECURITY” system and “CAR 220” group are
displayed as follows:
Alpha Display Mode
2.4.5 SELECTING SYSTEMS AND GROUPS
The front panel Select switch is used to change
the system and group. Rotating this switch clockwise
increases the system or group, and rotating it counter-
clockwise decreases the system or group. After the
highest system or group is selected, wrap-around to
the lowest system or group occurs and vice versa. The
wrap-around tone sounds when this occurs (if tones
are enabled).
*
System Number
Group Number
Group Alpha Tag
System Alpha Tag
Group Alpha Tag