OPERATION
3-13
Revised February 1997
Part No. 001-9750-005
vehicle. To turn this indicator off, change any front
panel control, take the microphone off-hook, press the
PTT switch, or turn power off and then on again. The
call indicator operates in both the scan and non-scan
modes. It is disabled during the scan delay periods
described in Section 3.4.3.
With Multi-Net and LTR operation, the call indi-
cator can be programmed to activate on specific fixed
priority and selectable ID codes. It does not activate
when calls are received on block ID codes. With
conventional operation, the call indicator can be
programmed to activate on each group. If a group is
programmed for carrier squelch or if the monitor
mode is enabled, it turns on when a carrier is detected.
If Call Guard squelch is used, it turns on when the
Call Guard tone or code is detected.
3.6.3 PROCEED (CLEAR-TO-TALK) TONE
This is a short tone that sounds when the PTT
switch is pressed. It indicates that the radio system has
been successfully accessed (data handshake
completed) and speaking can begin. It is available on
LTR and Multi-Net systems without any special
programming and can be enabled or disabled on
conventional systems. This and other tones can also be
enabled or disabled by the Radio Sounds parameter
described in Section 3.5.18.
When making any type of Multi-Net or LTR call,
if the busy tone sounds and “SYSTEM BSY” is
displayed when the PTT switch is pressed, the system
is busy. If the PTT switch is held down, the system is
accessed and the proceed tone sounds when it is avail-
able. If an out-of-range or some other error condition
exists, the intercept tone sounds and the error condi-
tion is displayed.
If the proceed tone has been programmed on
conventional systems, it does not sound if the channel
is busy, but does sound even if an out-of-range condi-
tion exists. This occurs because there is no handshake
that can be used to detect this condition. The channel
should still be monitored manually because the trans-
mitter always keys when the PTT switch is pressed
(unless the Transmit Disable On Busy feature is being
used).
With later models, a proceed tone delay of 125 -
1875 ms can be programmed on each system and then
individually enabled or disabled on each dispatch
group (a fixed delay of approximately 500 ms occurs
with interconnect and auxiliary calls). This feature can
be used to delay speaking with calls which have a
longer setup time. This delay is available only with
transceiver software, Version 222 or later, and
programming software, Version 206 or later.
3.6.4 HORN/LIGHT ALERT
General
This feature activates an external alert such as the
vehicle's horn or lights when calls are received on
groups or priority ID codes programmed for this
feature. When enabled as described in this section, the
alert turns on for 0.5 second and off for 0.5 second for
three cycles (3 seconds). It then goes back to the
disabled state. Installation is described in Section 2.4.4.
NOTE: In early 1996, a new version of transceiver
software began shipping that allows two modes of
horn alert operation to be programmed. New pro-
gramming software is also required to program the
additional mode. The transceiver software is Version
213 or later (see Appendix A), and the programming
software is Version 204 or later (see Section 4.1.5).
Another change occurred with Version 214 software to
make Mode A totally manual (Mode A-1 described
below is then no longer available).
Operation in Mode A and B
Horn alert operation of earlier models (versions
prior to 213) is always Mode A-1. The revised trans-
ceiver software and programming software are
required to program Mode B.
A power-off delay can be programmed to occur
when power is turned off by the ignition switch (see
Section 3.6.7). If the ignition switch does not control
power, only the front panel power switch affects oper-
ation in the following modes. Once transceiver power
is turned off by the power or ignition switch or turn-
off delay, the horn alert is no longer functional.
Mode A-1 (Automatic Off/Manual On)
(Transceiver Software Version 213 and earlier)
Ignition Switch - The horn alert always turns off when
the ignition switch is turned on (with the power switch
Содержание Summit DM 975x
Страница 105: ...MULTI NET SYSTEM OVERVIEW 5 10 Revised February 1997 Part No 001 9750 005 ...
Страница 108: ...CIRCUIT DESCRIPTION 6 3 August 1993 Part No 001 9750 001 Figure 6 1 Transceiver Block Diagram ...
Страница 123: ...CIRCUIT DESCRIPTION 6 18 August 1993 Part No 001 9750 001 ...
Страница 131: ...SERVICING 7 8 Revised January 1995 Part No 001 9750 003 ...
Страница 156: ...9 19 Revised December 2000 Part No 001 9750 007 TRANSCEIVER EXPLODED VIEW PART 1 ...
Страница 157: ...Revised January 1995 Part No 001 9750 003 9 20 TRANSCEIVER EXPLODED VIEW PART 2 Remote Control Parts ...
Страница 168: ...Revised January 1995 Part No 001 9750 003 10 11 INTERCONNECT SCHEMATIC ...
Страница 169: ...Revised January 1995 Part No 001 9750 003 10 12 DISPLAY BOARD SCHEMATIC ...
Страница 170: ...Revised January 1995 Part No 001 9750 003 10 13 DISPLAY BOARD TOP VIEW DISPLAY BOARD BOTTOM VIEW ...
Страница 171: ...Revised January 1995 Part No 001 9750 003 10 14 RF BOARD SCHEMATIC REVISED 800 MHZ ...
Страница 172: ...Revised January 1995 Part No 001 9750 003 10 15 RF BOARD BOARD LAYOUT ALL 800 900 MHZ ...
Страница 173: ...Revised January 1995 Part No 001 9750 003 10 16 RF BOARD BOARD SCHEMATIC 900 MHZ ...
Страница 174: ...Revised January 1995 Part No 001 9750 003 10 17 RF BOARD BOARD SCHEMATIC UNREVISED 800 MHZ ...
Страница 178: ...Revised January 1995 Part No 001 9750 003 10 21 PA BOARD SCHEMATIC 900 MHZ 30W ...
Страница 179: ...Revised January 1995 Part No 001 9750 003 10 22 PA BOARD SCHEMATIC 900 MHZ 15W ...
Страница 180: ...Revised January 1995 Part No 001 9750 003 10 23 PA BOARD BOARD LAYOUT 900 MHZ UNREVISED 800 MHZ 15W 30W 35W 15W MODELS ...
Страница 181: ...Revised January 1995 Part No 001 9750 003 10 24 PA BOARD SCHEMATIC UNREVISED 800 MHZ 35W ...
Страница 182: ...Revised January 1995 Part No 001 9750 003 10 25 PA BOARD SCHEMATIC UNREVISED 800 MHZ 15W ...
Страница 183: ...Revised January 1995 Part No 001 9750 003 10 26 AUDIO LOGIC BOARD SCHEMATIC PART 1 OF 2 ...
Страница 184: ...Revised January 1995 Part No 001 9750 003 10 27 AUDIO LOGIC BOARD SCHEMATIC PART 2 OF 2 ...
Страница 185: ...Revised January 1995 Part No 001 9750 003 10 28 AUDIO LOGIC BOARD LAYOUT TOP VIEW ...
Страница 186: ...Revised January 1995 Part No 001 9750 003 10 29 AUDIO LOGIC BOARD LAYOUT BOTTOM VIEW ...
Страница 188: ...Revised January 1995 Part No 001 9750 003 10 31 REMOTE TRANSCEIVER INTERCONNECT SCHEMATIC ...
Страница 189: ...Revised January 1995 Part No 001 9750 003 10 32 REMOTE CONTROL UNIT INTERFACE BOARD SCHEMATIC ...
Страница 216: ...Part Number 001 9750 007 12 00 hph Printed in U S A ...
