System/Group Display Mode; System And Group Select; Keypad Disable (Standard); Keypad Disable (Using Password) - E.F. Johnson LTR-Net 7243 Service Manual

7.5vdc 1 and 4 watts part no. 242-7243-xxx
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2.3.4 SYSTEM/GROUP DISPLAY MODE

Two system/group display modes can be selected.
One is a numeric format and the other is an alpha tag
format. To switch between these modes, press FCN
STR or select the S/G DISPL menu parameter (see
Section 2.5.2). Turning power off does not change the
selected mode. These modes operate as follows:
Numeric Mode - The system and group numbers are
displayed as "Sxx Gxx" and the group alpha tag is not
displayed. For example, System 1 and Group 2 are
displayed as follows. When system or group scanning
is occurring, the numbers are replaced by dashes (see
Section 2.6.2)
.
Numeric Display Mode
Alpha Tag Mode - The group alpha tag is displayed
instead of the system and group numbers. For
example, the "CAR 220" group is displayed as
follows. When system or group scanning is occurring,
the alpha tag is replaced by "SYS SCAN or "GRP
SCAN" (see Section 2.6.2). To briefly display the
selected system number, press FCN RCL.
Alpha Tag Display Mode

2.3.5 SYSTEM AND GROUP SELECT

Systems and groups are selected as follows.
When the system is changed, the last selected group in
the new system is displayed.
To increase the selected system, press SYS repeat-
edly or press SYS and then
increase the selected group, press GRP repeatedly or
press GRP . Holding the
#
function to repeat. After the highest system or group
is selected, wrap-around to the lowest system or
group occurs.
To decrease the selected system, press SYS and then
(
). Likewise, to decrease the selected group,
#
(
). Likewise, to
#
key down causes the
press GRP
. As when selecting a system, holding
the
key down causes the function to repeat, and
after the lowest system or group is selected, wrap-
around occurs.
To directly select a system or group number, press
SYS or GRP and then the number of the desired
system or group. For example, to select Group 9,
press GRP, 0, 9. A leading "0" must be entered to
select systems and groups 1-9.

2.3.6 KEYPAD DISABLE (STANDARD)

Occasionally, the front panel keys may be acci-
dentally pressed, for example, if the transceiver is
carried on a belt and it brushes against an object. To
prevent this from happening, the front panel keys and
option switches can be quickly disabled by simply
pressing FCN
. The disabled condition is indicated
by the
icon.
If a key or option switch is then pressed, all that
happens is "LOCKED" is displayed. The on-off/
volume and PTT controls remain functional so that
calls can be received and transmitted. To re-enable the
keys and option switches, press FCN
Turning power off does not change the selected mode.

2.3.7 KEYPAD DISABLE (USING PASSWORD)

To prevent unauthorized changing of the selected
system and group and other operating parameters, the
keypad and option switches can be disabled using a
password. To select this disable mode, press FCN
"PASSWORD" is then displayed to indicate that a
four-digit unlock password must be entered. This pass-
word can be any four-digit number except "0000". The
desired password must be entered twice (the second
time is to confirm it). The keypad and option switches
are then disabled as indicated by "LOCKED" and
in the display.
If a key or option switch is then pressed, all that
happens is "PASS LCK" is displayed. To re-enable the
keypad and option switches, press FCN
re-enter the four-digit password. As with the disable
mode described in the preceding section, the on-off/
volume and PTT controls remain active so that calls
can be received and transmitted normally.
2-6
OPERATION
again.
.
again and
November 2001
Part No. 001-7240-001

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