Service manual

GENERAL INFORMATION
1-2
April 2001
Part No. 001-9800-203
• Same specifications as high tier models.
High Tier Models
• Up to 100 systems are programmable, and each
system can be programmed with up to 16 groups.
However, because of memory limitations, it is not
possible to program 100 16-group systems. The
total number of systems that can be programmed
decreases as the number of groups in each system
increases. In addition, the system type (LTR or
conventional) and the size of the channel table also
affect the number that can be programmed.
For example, up to 100 1-group systems can be
programmed, and the maximum number decreases
to approximately 40 16-group systems. As data is
entered using the personality programming soft-
ware, a running indication of the amount of memory
remaining is displayed (see Section 4.3.1).
• Up to 16 banks of systems are programmable.
• All five option switches are programmable.
• The front panel and logic board assemblies are
unique to this model.
Figure 1-1 Data Transceiver
1.2.4 DATA MODELS
A data version of this transceiver is available in
each frequency range (see Section 1.3). Both medium
and high power models are available. This transceiver
has a blank front panel (see Figure 1-1) and uses the
same RF and PA boards as standard models. However,
the audio/logic board is an enhanced version of the
low-tier model minus display- related components.
The data transfer rate is 4800 bits per second over a 25
kHz channel. As with standard models, operation on
conventional or LTR systems and group IDs can be
programmed, and scanning can be used to prevent
missed calls.
The data equipment is connected to the trans-
ceiver via a pigtail cable extending from the back
panel (see Section 2.7). The front panel jack is used
for programming. The data interface and serial
protocol are described in Appendix A and Appendix B
of this manual. In general, the data transceiver has the
operating, data interface, and data protocol features of
standard high tier models.
CAUTION
DO NOT apply power a transceiver that has one of the
data cables installed without first properly terminating
the wires of that cable. These wires carry differing
potentials and transceiver damage may result if they
inadvertently contact each other with power applied.
1.2.5 FRONT AND REMOTE MOUNTING
High tier models are available in both front- and
remote-mount versions, and low tier models are avail-
able in a front mount version only. Remote mount
versions are intended to be mounted in a remote loca-
tion up to approximately 17 feet away from the control
unit such as the vehicle’s trunk. Front mount versions
are intended to be mounted within reach of the
operator.
The control unit connects to the remote pigtail
cable coming from the back panel of the transceiver.
This cable is standard with remote mount models and
optional with front mount models. The remote control
unit uses the high tier front panel assembly. A Remote
Conversion Kit is available for converting a front
mount high tier model to remote mounting (see Table
1-3). The transceiver does not have dual-control capa-
bility. Therefore, either the front panel or a remote
control unit can be used for control, but not both.
1.2.6 NPSPAC MODELS (800 MHZ ONLY)
All 800 MHz 988x transceivers capable of oper-
ating on 25 kHz channels meet the stricter specifica-
tions established by NPSPAC (National Public Safety
Panel Advisory Committee) for public safety frequen-
cies from 821-824 and 866-869 MHz. Since deviation
is less on NPSPAC channels, an additional screen is