GENERAL INFORMATION
1-2
Revised February 1997
Part No. 001-9750-005
The remote control unit uses the same front panel
assembly that is used on front mount transceivers.
Therefore, it operates the same as a front-mount trans-
ceiver. A Remote Conversion Kit is available which
converts the front panel of a front mount transceiver to
a remote control unit (see Table 1-1). The remote
control unit has an internal 5-watt speaker or an
external 15-watt speaker can be used. Dual trans-
ceiver controls are also available when the remote
control unit is connected to a standard front mount
transceiver.
1.2.5 NPSPAC MODELS (800 MHZ ONLY)
All 800 MHz versions of this transceiver meet the
stricter specifications established by NPSPAC
(National Public Safety Panel Advisory Committee)
for public safety frequencies from 821-824 and 866-
869 MHz. Deviation is less on NPSPAC channels;
however, no alignment change is required because it is
automatically set for the correct level when a public
safety channel is selected
(see Appendix A.2).
1.3 PART NUMBER BREAKDOWN
The following is a breakdown of the part number
used to identify this transceiver:
1.4 TRANSCEIVER IDENTIFICATION
The transceiver identification number is printed
on a label that is affixed to the bottom cover. The
following information is contained in that number:
1.5 ACCESSORIES
The accessories available for this transceiver are
listed in Table 1-2. A brief description of several of
these accessories follows.
Mounting Hardware -
The mounting hardware and
DC power cable are shown in Figures 2-1 and 2-3 in
Section 2. A 22-foot DC power cable is used for both
front and remote mount applications. The cable is cut
to the required length at installation and any excess
discarded. The accessory cable is used to connect such
things as an external speaker, public address, ignition
sense input, and a horn alert to the transceiver. It
includes two 22-foot and three 2-foot wires that are
connected as required to external points. The adapter
cable is used to connect a 86xx-series power cable to
these transceivers.
Key Cap Kit -
This kit includes key caps labeled for
all the functions that can be controlled by the six front
panel option switches. Also included are blank key
caps for unused switches. An extraction tool for
removing the key caps is included in the cable and
hardware kit. Refer to Section 2.6 for key cap installa-
tion information.
Lockable Mounting Tray -
This bracket allows the
transceiver to be locked in place to guard against theft.
In addition, it allows it to be easily unlocked and
removed from the vehicle. Refer to Section 2.8 for
installation information.
Microphones and Speaker -
The microphones in
Table 1-1 have an impedance of 620 ohms. All DTMF
microphones are backlighted. The environmentally
sealed microphones are sealed against such things as
rain, sand, and dust.
The external 15-watt speaker can be used in place
of the internal 5-watt speaker. It is non- amplified and
weatherproof. This speaker is connected to pins 1 and
2 of the accessory connector pigtail on the back of the
transceiver.
Remote Kits -
The remote conversion kit converts the
front panel of a front-mount transceiver to a remote
control unit. It includes a blank cover plate with a
programming jack for the transceiver, a housing with
interface board to form the remote control unit, a
remote pigtail cable, and a 17-foot control cable. The
remote control unit uses the internal 5-watt
speaker or
242 - 97 x x - 111
5 = 800 MHz
7 = 900 MHz
3 = 15W, Frt Mt
4 = 15W, Rem Mt
5 = 30/35W, Frt Mt
6 = 30/35W, Rem Mt
97xx x A 24 3 A 12345
8th
Digit
Week No.
Year
A =
Model
Revision
Letter
Manufacture
Date
Warranty
Number
Plant
Summary of Contents for Summit DM 975x
Page 105: ...MULTI NET SYSTEM OVERVIEW 5 10 Revised February 1997 Part No 001 9750 005 ...
Page 108: ...CIRCUIT DESCRIPTION 6 3 August 1993 Part No 001 9750 001 Figure 6 1 Transceiver Block Diagram ...
Page 123: ...CIRCUIT DESCRIPTION 6 18 August 1993 Part No 001 9750 001 ...
Page 131: ...SERVICING 7 8 Revised January 1995 Part No 001 9750 003 ...
Page 156: ...9 19 Revised December 2000 Part No 001 9750 007 TRANSCEIVER EXPLODED VIEW PART 1 ...
Page 168: ...Revised January 1995 Part No 001 9750 003 10 11 INTERCONNECT SCHEMATIC ...
Page 169: ...Revised January 1995 Part No 001 9750 003 10 12 DISPLAY BOARD SCHEMATIC ...
Page 171: ...Revised January 1995 Part No 001 9750 003 10 14 RF BOARD SCHEMATIC REVISED 800 MHZ ...
Page 172: ...Revised January 1995 Part No 001 9750 003 10 15 RF BOARD BOARD LAYOUT ALL 800 900 MHZ ...
Page 173: ...Revised January 1995 Part No 001 9750 003 10 16 RF BOARD BOARD SCHEMATIC 900 MHZ ...
Page 174: ...Revised January 1995 Part No 001 9750 003 10 17 RF BOARD BOARD SCHEMATIC UNREVISED 800 MHZ ...
Page 178: ...Revised January 1995 Part No 001 9750 003 10 21 PA BOARD SCHEMATIC 900 MHZ 30W ...
Page 179: ...Revised January 1995 Part No 001 9750 003 10 22 PA BOARD SCHEMATIC 900 MHZ 15W ...
Page 181: ...Revised January 1995 Part No 001 9750 003 10 24 PA BOARD SCHEMATIC UNREVISED 800 MHZ 35W ...
Page 182: ...Revised January 1995 Part No 001 9750 003 10 25 PA BOARD SCHEMATIC UNREVISED 800 MHZ 15W ...
Page 183: ...Revised January 1995 Part No 001 9750 003 10 26 AUDIO LOGIC BOARD SCHEMATIC PART 1 OF 2 ...
Page 184: ...Revised January 1995 Part No 001 9750 003 10 27 AUDIO LOGIC BOARD SCHEMATIC PART 2 OF 2 ...
Page 185: ...Revised January 1995 Part No 001 9750 003 10 28 AUDIO LOGIC BOARD LAYOUT TOP VIEW ...
Page 186: ...Revised January 1995 Part No 001 9750 003 10 29 AUDIO LOGIC BOARD LAYOUT BOTTOM VIEW ...
Page 188: ...Revised January 1995 Part No 001 9750 003 10 31 REMOTE TRANSCEIVER INTERCONNECT SCHEMATIC ...
Page 189: ...Revised January 1995 Part No 001 9750 003 10 32 REMOTE CONTROL UNIT INTERFACE BOARD SCHEMATIC ...
Page 216: ...Part Number 001 9750 007 12 00 hph Printed in U S A ...
