Technical Manual

APPLIED TECHNOLOGY SOLUTIONS, INC.
Document: FCC1225manual.wpd issued: jan99 revised: July 27, 1999 page: 4
SECTION TWO
OPERATION
2.0 GENERAL
The ATS Model 1225 Hand Held Transceiver is one of the System 1200 devices. The System 1200
devices were designed to provide secure communications to law enforcement agencies. This section describes the operation
of the Model 1225 with the other units in the System 1200 family.
2.1 ATS 1200 SYSTEM COMPONENTS
The ATS System 1200 includes the Model 1245 monitor Station and the Series 1250 Transmitters.
2.2 MODEL 1225 OPERATION
Before operating the Model 1225, the user should read Section 1.2 of this manual, where the user controls
and interfaces are described.
The ATS System 1200 was designed to support two primary operating scenarios. The first scenario is
direct transceiver-to-transceiver communications. In this scenario, communications occur between individual transceivers,
using either Channel A or Channel B. The second scenario requires the use of a repeater to extend the operating range. In
the Repeater Mode, system components transmit on Channel A (or Channel C) and receive on Channel B. The Model 1240
Portable Repeater was designed primarily to support the second scenario but it also provides for direct communications
capability.
To communicate with other units in the direct transceiver-to-transceiver mode, all units must be set to the
same channel, either Channel A or B, set to the same code, either C or P and have the same keys loaded. In the repeater (R)
mode, the Model 1240 Portable Repeater receives transmissions on Channel A and re-transmits them on Channel B. To
use the repeater, the Model 1225 CHAN select must be set to R.
A fully charged battery pack should be installed onto the Model 1225 Hand Held Transceiver prior to
each deployment. To operate the Model 1225, place the CHAN switch to the desired position, A, B, or R (repeater), select
either the common (C) or private (P) code with the CODE switch and turn the unit on by rotating the VOLUME control from
the OFF position.
NOTE
For non-repeater applications, all system transceivers MUST be set to the same
channel and code. Cross channel or cross code operation is not possible.
During idle periods, the Model 1225 will power down most of the receive circuits.
The Model 1225 Hand Held unit only transmits when the PTT switch is depressed. The integral, side
panel mounted PTT is a momentary switch and must be held down for the duration of the transmit interval. The Model 1225
also includes an integral microphone and speaker. The microphone is sensitive and should be held several inches away from
the mouth when transmitting.
2.2.1 Safety Considerations
The Model 1225, as with all electronic devices, radiates electronic energy and could pose a safety hazard
if used improperly. To minimize any potential radiation hazards, the user should: