HYT Science and Technology Co TR-800U1 REPEATER (BASE STATION) User Manual User s Manual Add Information

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SAFETYTRAINING INFORMATION
Your HYT radio generates RF electromagnetic energy during
transmit mode. This radio is designed for and classified as
“Occupational Use Only”, meaning it must be used only during
the course of employment by individuals aware of the hazards,
and the ways to minimize such hazards. This radio is NOT
intended for use by the “General Population” in an uncontrolled
environment.
This radio has been tested and complies with the FCC RF exposure limits for
“Occupational Use Only”. In addition, your HYT radio complies with the following
Standards and Guidelines with regard to RF energy and electromagnetic energy levels
and evaluation of such levels for exposure to humans:
„ FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC
Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields.
„ American National Standards Institute (C95.1-1992), IEEE Standard for Safety Levels
with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz
to 300 GHz.
„ American National Standards Institute (C95.3-1992), IEEE Recommended Practice
for the Measurement of Potentially Hazardous Electromagnetic Fields– RF and
Microwave.
„ The following accessories are authorized for use with this product. Use of accessories
other than those (listed in the instruction) specified may result in RF exposure levels
exceeding the FCC requirements for wireless RF exposure.
To ensure that your expose to RF electromagnetic
energy is within the FCC allowable limits for
occupational use, always adhere to the following
guidelines:
„ DO NOT operate the radio without a proper antenna attached, as this may damaged
the radio and may also cause you to exceed FCC RF exposure limits. A proper
antenna is the antenna supplied with this radio by the manufacturer or antenna
specifically authorized by the manufacturer for use with this radio.
„ DO NOT transmits for more than 50% of total radio use time (“50%duty cycle”).
Transmitting more than 50% of the time can cause FCC RF exposure compliance
requirements to be exceeded. The radio is transmitting when the “TX indicator” lights
red. You can cause the radio to transmit by pressing the “PTT” switch.
„ ALWAYS keep the antenna at least 150 cm away from the body when transmitting
The information listed above provides the user with the information needed to make him
or her aware of RF exposure, and what to do to assure that this radio operates with the
FCC RF exposure limits of this radio.
Electromagnetic Interference/Compatibility
During transmissions, your HYT radio generates RF energy that can possibly cause
interference with other devices or systems. To avoid such interference, turn off the radio in
areas where signs are posted to do so. DO NOT operate the transmitter in areas that are
sensitive to electromagnetic radiation such as hospitals, aircraft, and blasting sites.
Occupational/Controlled Use
The radio transmitter is used in situations in which persons are exposed as consequence
of their employment provided those persons are fully aware of the potential for exposure
and can exercise control over their exposure.
IMPORTANT
READ ALL INSTRUCTIONS carefully and completely before using the
transceiver
SAVE THIS INSTRUCTION MANUAL- This instruction manual contains
important operating instructions for the Two-Way Radio
EXPLICIT DEFINITIONS
WORD
DEFINITION
WARNING
Personal injury, fire hazard or electric shock
may occur.
CAUTION
Equipment damage may occur.
NOTE
If disregarded, inconvenience only. No risk
of personal injury, fire or electric shock.
OPERATING NOTES
„ When transmitting, Please Keep the antenna at least 150 cm from your head and
body.
PRECAUTIONS
WARNING! NEVER hold the transceiver so that the antenna is very close to, or touching
exposed parts of the body, especially the face or eyes, while transmitting. The transceiver
will perform best if the microphone is 150 cm away from the antenna.
WARNING! NEVER operate the transceiver with a headset or other audio accessories at
high volume levels.
DO NOT push the PTT when not actually desiring to transmit.
AVOID using or placing the transceiver in direct sunlight or in areas with temperatures
below –30°C (–22°F) or above +60°C (+140°F).
DO NOT modify the transceiver for any reason.
FCC CAUTION:
Changes or modifications to this device, not expressly approved by HYT, could void
your authority to operate this transceiver under FCC regulations.
„ Revision History
P/N
Release Date
Revision
Initial Release
„ General
Manual Scope
This manual is intended for use by experienced technicians familiar with similar types of communication
equipment. It contains all service information required for the equipment and is current as of the
publication date.
Safety and General Information
The following general safety precautions as would normally apply, should be observed during all
phases of operation, service and repair of this equipment.
◇ This equipment should be serviced by qualified technicians only.
◇ Do not modify the repeater for any reason.
◇ To avoid electromagnetic interference and/or compatibility conflicts, do not operate your
repeater when you are near 380V AC mains or above.
◇ For vehicles with an air bag, do not place a repeater in the area over an air bag or in the air bag
deployment area. Air bags inflate with great force. If a repeater is placed in the air bag
deployment area and the air bag inflates, the repeater may be propelled with great force and
cause serious injury to occupants of the vehicle.
◇ Turn off your repeater prior to entering any area with a potentially explosive atmosphere.
◇ To avoid possible interference with blasting operations, turn off your repeater when you are near
electrical blasting caps, in a blasting area, or in areas posted: “Turn off two-way radio.” Obey all
signs and instructions.
◇ Do not charge your back-up battery in a potentially explosive atmosphere
◇ Do not expose the repeater to direct sunlight over a long time, nor place it close to heating
source.
TR-800 Service Manual
◇ Do not place the repeater in excessively dusty, humid areas, nor on unstable surfaces
◇ Connect to the lightning arrester prior to the antenna which is installed
outdoors, and the
chassis or equipment housing must be connected to an absolute earth ground, to minimize any
possible shock hazard from lightning strike.
◇ Please make sure no stress on the antenna joint during transportation or installation.
Caution:
This equipment generates, uses, and can radiate radio frequency energy and, if not installed or used in
accordance with the owner’s manuals, can cause interference to radio communications.
HYT endeavors to achieve the accuracy and completeness of this manual, but no warranty of accuracy or reliability is
given. All the above specifications and design are subject to change without notice due to continuous development.
No part of this manual may be copied, reproduced, translated, stored in a retrieval system, distributed, or transmitted in
any form or by any means, electronic or mechanical, for any purpose without the express written permission of HYT.
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TR-800 Service Manual
„ Brief Introduction
18
2 3 4 5 6
TX
RX
19
BAT
20
10
RPT
OPT
MONI
SCAN
11
12
UP
DN
13
14
15
21
16
22
17
1. Speaker ①
26
25
24
23
2. LED Indicators
Red LED ② lights while the main radio is transmitting, and flashes while receiving.
Green LED ③ lights while the slave radio is transmitting, and flashes while receiving.
Dark red LED ④ lights while DC power supplies and the AC power fails.
Orange LED ⑤ lights while the repeater in setup state and goes out while in knockdown state.
Blue LED ⑧ lights while the RPT/OPT is active, and goes out while inactive.
3. Repeater Setup/Knockdown ⑥
The setup button is a momentary contact switch that enables or disables the main radio of TR-800.
4. LCD Display ⑦
Display current channel number, frequency, power level, receive status, etc.
5. Power Switch/Volume Control Knob ⑨
The power switch is located in the center of the knob, short press of which turns repeater on, and
long press for 1 second turns repeater off. Rotate the volume control knob clockwise or
counter-clockwise to adjust the volume for a
desired level.
10
6. Microphone Hook ○
7. RPT Button, OPT Button
Press the RPT button○
12 to enable uni-directional repeater, and press the OPT button ○
11 to enable
bi-directional repeater.
8. Scan Button, Monitor Button
16 to initiate repeater scan, which can be activated only when in
Press the Scan button ○
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TR-800 Service Manual
uni-directional mode (forward directional, i.e., RPT is active while OPT is inactive).
17 to display channel frequency by turns of slave radio Rx frequency,
Short press the Monitor button○
slave radio Tx frequency, main radio Rx frequency, main radio Tx frequency; long press it to monitor
the activities on the current channel. The main radio processes monitoring while OPT is active, the
slave radio processes monitoring while OPT is inactive.
9. “Up” Button ○
15 , “Down” Button○
13
Press the “Up” or “Down” button to select a desired channel.
10. RJ45 Connector ○
14
Plug the desktop microphone or palm microphone into this port to input audio, or plug the
programming cable into this port to program both radios.
11. Antenna Connector
19 is for connecting with the main radio’s antenna, while the BNC connector○
18 is
The N connector○
for the slave radio’s antenna.
When using duplexer, choose the correct adaptor on the back of TR-800 according to your antenna
connector type.
20
12. Fan ○
The fan is temperature-controlled with continuously variable speed as temperature changes.
21 (with Switch○
22 )
13. AC Power Inlet○
14. Accessory Connector ○
23 (DB15/F)
Used for external controller or link equipment.
15. Grounding Lug ○
24
For lightning protection, this terminal must be connected to an absolute earth ground via thick
copper wire, or use lightning arrester if necessary.
16. DC Power Inlet ○
25
The power supply would auto-revert to backup battery once the AC mains fails. This DC port also
provides floating charge function with approximate 400mA current.
26
17. DC Fuse ○
The 15A/32Vdc fuse protects against battery polarity reversal.
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TR-800 Service Manual
„ Software Specification
Basic Operation
Short press the power switch to turn on the repeater; rotate the volume control knob clockwise to adjust
the volume for a comfortable listening level. Press the “Up” or “Down” button to select a desired channel,
then the repeater operates as you set.
1.
To achieve the basic repeater functions, the radio must be in the repeater setup, and operates in the
uni-directional or bi-directional repeater mode.
Repeater Hang Time
When the repeater stops receiving upon signal off, the transmitter remains transmitting for a
programmed time period, which reduces delay on conversation due to the setup of repeater link. The
repeater Hang Time can be activated when in forward directional repeater only.
Frequency Display
Short press the Monitor button displays the frequency in the turn of: slave radio Rx frequency, slave
radio Tx frequency, main radio Rx frequency, main radio Tx frequency.
Monitor
If the Monitor function is set by your dealer, long press the programmed Monitor key while in receive
mode, to hear activities on current channel. The monitor function is disabled while in the bi-directional
repeater mode. Four operation modes listed below are provided for you to choose via the programming
software.
A. Carrier Squelch-Momentary
Hold down the Monitor key to open CTCSS/CDCSS/DTMF/2-Tone/5-Tone signalling squelch.
Release it to close the signalling squelch.
B. Carrier Squelch-Toggle
Press the Monitor key to open CTCSS/CDCSS/DTMF/2-Tone/5-Tone signalling squelch. Press it
again to close the signalling squelch.
C. Squelch Off-Momentary
Hold down the Monitor key to open carrier squelch; release it to close the carrier squelch.
D. Squelch Off-Toggle
Long press the Monitor key to open carrier squelch. Press it again to close the carrier squelch.
Scan
The Scan function can be activated while in the forward directional repeater mode only. Press the Scan
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TR-800 Service Manual
button to initiate repeater scan (if scan parameter is applicable). The Scan Interval Time and Dropout
Delay Time are configurable via the programming software.
Signalling Squelch
This feature can be enabled/disabled by your dealer. If the feature is enabled, the preset DTMF/2-Tone
/5-Tone will control repeater mute/unmute. The repeater will not unmute until valid signalling is received.
CTCSS/CDCSS
Set up talkgroups/users with unique CTCSS/CDCSS to prevent unwanted conversations on the same
frequency. If CTCSS/CDCSS is set on current channel, a CTCSS/CDCSS match will be required on an
incoming call. If not set, the radio unmutes to all calls within the communication range on current channel.
Your dealer may preset CTCSS/CDCSS on certain channels.
Note: This feature does not mean that your conversation will not be heard by others.
Time-out Timer (TOT)
The feature allows for efficient use of channels by limiting the maximum time of each transmission. It
protects the radio from damage caused by long time transmission. Once a continuous transmission
exceeds the preset time (15～1200s programmable), the transmission will be automatically terminated
and alert tone will be heard. The alert tone ceases upon the release of the PTT.
Selectable Squelch Level (SQL)
Squelch levels from 0 to 9 are selectable via the programming software.
Voice Compander/Scrambler
The voice compander/scrambler feature may be enabled/disabled via the programming software. The
emphasis/de-emphasis function needs to be disabled while the scrambler feature is enabled, and
enabled while the scrambler feature is disabled.
High/Mid/Low Power Programmable
High/Med/Low power is selectable via the programming software.
Programmable Channel Spacing
A wide/narrow channel spacing is selectable via the programming software.
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TR-800 Service Manual
Repeater Modes
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TR-800 Service Manual
Base Station
Knockdown Mode
Forward Directional
Repeater
Setup Mode
Reverse Directional
Repeater
PC Programming Mode
Bi-directional Repeater
Modes Description
Mode
Description
Knockdown
Press the SETUP button while the repeater is
power on. The repeater enters knockdown
mode once the orange LED goes out.
Base Station
Press RPT and OPT buttons when the SETUP
orange LED is on. The radio enters base
station mode once both the RPT and OPT
blue LEDs go out.
Forward Directional
Repeater
Press RPT and OPT buttons when SETUP
orange LED is on. The repeater enters
forward directional mode once the RPT blue
LED is on while the OPT blue LED goes out.
Reverse Directional
Repeater
Press RPT and OPT buttons when the SETUP
orange LED is on. The repeater enters
reverse directional mode once the RPT blue
LED goes out while the OPT blue LED is on.
Bi-directional Repeater
Press RPT and OPT buttons when the SETUP
orange LED is on. The repeater enters
bi-directional repeater mode once both the
RPT and OPT blue LEDs is on.
Setup
PC Programming
The repeater enters PC programming mode
once command is received from PC, while the
SETUP orange LED is on.
Repeater Setup/Knockdown
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TR-800 Service Manual
Press the SETUP button located on the front panel to toggle between repeater setup and knockdown,
with LED indications. While in setup state, both radios turn on at power up; in knockdown state, only
receive radio turns on at power up. There are three repeater types: base station, uni-directional and
bi-directional in the repeater setup state. The repeater is initialized to base station mode when it toggles
from knockdown to setup state. But in the knockdown state, the repeater works only as a receiver.
In base station mode, the repeater function is disabled, with the slave radio as a receiver and the main
radio as a transmitter. In bi-directional repeater mode, the front panel PTT is disabled.
The repeater setup/knockdown status will be recorded after the repeater power failure. (E.g. If the
repeater operates in forward directional mode, it will still work in such mode after the power recovers)
PC Programming Mode
Connect the PC with the repeater via programming cable. Data can be transmitted from PC to the
repeater. Repeater LCD displays “PROGRAMMING” while reading/writing data from/into the radio, with
red LED flashes indicating programming the main radio, and then green LED flashes indicating
programming the slave radio. The repeater resets automatically after programming is finished.
LCD Display
LCD Icon Description
Indicator
Description
1. Displays zone/channel number
2. Displays zone/channel name up to 12 alphanumeric
characters (preprogrammed by your dealer)
3. Displays channel frequency
4. Displays preprogrammed function
1.
Displays zone/channel number
2.
Displays transmit power level (the 4th digit: H, M, L)
3.
Displays preprogrammed function
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TR-800 Service Manual
Appears when the current channel is already in use
Appears when the Monitor key is pressed to disable
CTCSS/DCS, DTMF, 2-Tone/5-Tone decoding.
Appears when the repeater is unmuted upon the monitor
key is pressed.
Indicates the feature development feature.
SCAN
Appears while repeater scanning.
CALL
Appears when transmitting a selective call.
Appears when a message is received.
Reserved
Reserved
LED Indicator
LEDs indicate real-time radio status shown as the following table:
LED
Tx
Rx
RPT
Description
Red
Green
Blue, ultra bright
Indicates:
1.
Lights while the main radio is transmitting.
2.
Flashes while the main radio is receiving.
3.
Flashes while the main radio is monitoring channel activities.
4.
Flashes while programming the main radio.
1.
Lights while the slave radio is transmitting.
2.
Flashes while the slave radio is receiving.
3.
Flashes while the slave radio is monitoring channel activities.
4.
Flashes while programming the slave radio.
1.
Lights while the RPT is active.
2.
Goes out while the RPT is inactive.
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TR-800 Service Manual
OPT
Blue, ultra bright
SETUP
Orange
BAT
Dark red
1.
Lights while the OPT is active.
2.
Goes out while the OPT is inactive.
1.
Lights while in the Setup state.
2.
Goes out while in the Knockdown state.
1.
Lights while the backup battery supplies power.
2.
Goes out while the AC mains supplies power.
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TR-800 Service Manual
„ Circuit Description
Repeater Communication Interface & Display Unit
Theory of Operation
Setup/Knockdown (U0107D, Q0101, Q0103, Q0106, Q0107 and Q0108):
The Setup/Knockdown state at power-up can be configured via HR-800 programming software. The
electronic switch, Q0106 and Q0108, causes the Setup/Knockdown action by applying or removing
voltage at the ignition control, pin15, of “J0102-Main”. After power-up, the Setup or Knockdown state
may be changed remotely with a signal from
pin10 of “J4-Slave” or locally through the front panel
SETUP. S0102 is a momentary contact switch that is debounced by the Q0103/Q0107 latch circuit. The
orange “SETUP” LED, CR0102, illuminates to indicate the Setup state.
As the Setup/Knockdown circuit goes from the Knockdown to the Set-up state, Q1 is momentarily turned
on by Q0108 via the C0101/R0103 timing circuit. The push to talk (PTT) input of the slave radio, pin8 of
“J4-Slave” is pulled low by Q0101 and keys the transmitter. The “Rx” LED, CR0105, will briefly flash
during the moment that Q0101 is conducting.
Forward Audio Routing (U0103A, U0104A, U0104D and U0105A):
The audio gate, U0104D, quarter of an analog switch BU4066B, enables and disables the audio from
front panel MIC audio input. U0104D is turned on with an active dc level high driven at the output of
NAND gate U0103A-3 by the front panel PTT input. The salve radio audio output from pin5 of
“J0104-Slave” is routed to a potentiometer, RV0101. The output of RV0101 is applied to another switch
U0104A. U0104A is enabled once a valid signal is received and will route the audio to transmitter. The
external audio input, ACC Relay audio, is routed to another potentiometer, RV0103. The output of
RV0103 is applied to the second half of U0105, an operational amplifier NJM2904. U0105A, R1106 and
R0118 make a buffer amplifier for the link audio. All the “forward” audio will mix together and route
through S0101-5 to the main microphone transmitter audio, pin2 of “J0106-Main”.
Reverse Audio Routing (U0104B and U0104C):
Part of front panel MIC audio is routed to the input of U0104B, quarter of the analog switch BU4066B.
The output of U0104B is also controlled with an active low input by the front panel PTT. Audio present on
pin5 of “J0102-Main” is routed through S0102-7 to a potentiometer, RV0102, which is used to adjust the
audio level for proper deviation. As with the forward direction, the audio output of RV0102 is applied to
an analog switch U0106A. This switch turns on only if a valid signal is detected and pin6 of U0104 goes
high.
Forward and Reverse Key-up (Q0102, U0103, U0107, Q0105, Q0111 and Q0116):
When a valid input signal is present at the slave radio, pin6 of “J0104-Slave” will be pulled low and turn
off Q0105 through two NAND gates, U0107B and U0107C, along with RPT enable trigger. A dc level
high output from Q0105 will be applied to pin37 of U0110 and keys the main radio PTT through output
from pin12. The red “Tx” LED, CR0106, illuminates.
When the reverse key-up function is enabled, as in the bi-directional repeater configuration, S0101-8
must be on. Q0116 is a dc amplifier (buffer) for the Rx Carrier signal from pin6 of “J0102-Main”. An active
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TR-800 Service Manual
low state at the input of the NAND gate U0107A, one quarter of a MC14011B, will be conversed to a high
state to drive the buffer for the Rx Carrier signal. The active low level of Rx Carrier signal, along with the
OPT enable signal, cause a series of NAND gates, U0103D, U0103C and U0103B to generate a high dc
level to turn on Q0102. The output of Q0102 is pulled low for pin8 of “J0104-Slave” and keys the
transmitter of slave radio. The green “Rx” LED, CR0105, illuminates.
Q0111 is used to prevent the simultaneous active state on PTT and Rx Carrier signal of “J0102-Main”,
which possibly causes unwanted tie condition of keying of both radios.
Accessory D-SUB 15pin receptacle (“J0103-Acc”)
The accessory D-Sub, “J0103-ACC”, is connected to “J0102-Main” and “J0104-Slave” to supply Rx
audio and PTT for linked radios (repeaters) or external controllers. Receive audio and PTT activation
from the linked facilities are applied to the repeater for transmission.
Display Unit (U0110, PB01-PB06, K02, Q0113 and Q0118)
All the functional triggers of enable and disable come from keypad PB01 to PB06. K02 is an encoder
switch for front speaker audio output adjustment. A high output from pin37 of CPU U0110 will turn Q0119
on, driving the base of Q0118 to go low. The backlight LED for the keypad, CR0107, CR0108,
CR0111-CR0114 illuminate. Another backlight driver, Q0113, is controlled by Q0114 through the output
from pin17 of U0110.
Peripheral Circuitry (U0108, U0109, KR00 and KR03)
Operating power bus for all the electronics originates from the switch power 13.8Vdc output, pin9 of
“J0107-Slave”, and goes through U0109 and U0108 to obtain the reference voltages of 9Vdc and 5Vdc.
KR00 is a DPDT relay driven by transistor Q0123. The output from pin25 of U0110 will turn on/off Q0123,
which activates relay KR00 to toggle the front speaker audio routes from slave radio or from main radio.
KR03 is another SPDT relay for audio test requirement. A dc level high output from pin26 of U0110 will
turn on Q0124 and keys relay KR03. The receive audio to the speaker is blocked and routes only to pin8
of the front RJ45 connector J0109.
IMPORTANT NOTE
Using CTCSS or CDCSS tones may have a lower
probability to open squelch than carrier operation. But the
CTCSS codes near 100Hz and 150Hz have a high false
opening probability due to 50Hz AC power harmonics.
Countries having 60Hz AC power may have false opening
on 120Hz and 180Hz. CTCSS code 254.1Hz has a high
probability of squelch tails.
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TR-800 Service Manual
Figure Ⅰ Block Diagram
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TR-800 Service Manual
Power Management
Theory of Operation
Battery Revert Circuit:
A voltage reference network consisting of CR0212, CR0213, R0268, and VR0209 provides a stable
voltage reference of 7.5Vdc. This reference voltage, at the anode of VR0209, is applied to the negative
input of the Over Voltage Detector U0206B-6, to the positive input of AC Fail Detector U0206A-3, and to
the positive input of the Low Battery Detector U0205B-5. Operating positive supply voltage for the
integrated circuits is obtained from the TR-800 power supply through CR0212 when the TR-800 is
operating on AC mains input power. The supply voltage is obtained through CR02013 when the station is
operating on the battery.
During normal operation under AC mains power, the negative input of the AC Fail Detector U0206A-2 is
more positive than the positive input U0206A-3. The output of U0206A-1 is low and Q0224, the driver for
relay KR01, and Q0216, the “BATTERY ON” driver, are turned off. When AC mains power is lost, the
voltage at U0206A-2 becomes lower than the reference voltage applied to U0206A-3. The output at
U0206A-1 then goes high and turns on both Q0224, which activates relay KR01 and transistor Q0216,
which provides a low at the output point “BATTERY ON”. The “BAT ON” LED, CR0219, illuminates to
indicate the DC power supply is operating.
If the battery voltage falls below approximately 10.2Vdc, the output at U0205B-7 will go high. This action
turns on Q0218 that shunts the base drive to Q0224 through CR0217 and turns off the relay. Q0218 also
provides a low through CR0218 at output point “BAT LOW”. This auxiliary output might be used to key a
portable radio to signal the repeater operator that the battery has exceeded the low voltage limit for the
radios. Hysteresis is provided by the feedback network consisting of CR0221, R0289 and R0288 from
the output of U0205B-7 to the positive input U0205B-5. The reference voltage at the positive input of
U0205B-5 is increased such that the battery voltage must rise above 12Vdc before relay KR01 will
reactivate and place the TR-800 back on battery power. This latching action is used to prevent
excessively deep discharging of the battery.
The repeater will remain turned off until either AC mains return or a charged battery is substituted for the
discharged battery. The circuit consisting of C0233, R0285, R0286, CR0220, R0287 and Q0217 resets
U0205B-7 to low upon the return of the AC mains power.
Capacitor C0234 at the negative input of U0205B-6 smoothes the variation in the battery voltage
between the transmit radio keyed and unkeyed conditions. Capacitor C0230 at U0206A-2 input, in
conjunction with C0234 at U0205B-6, ensures proper resetting of U0205B with the return of the AC
mains power.
The Over Voltage Detector consisting of U0206B and resistors R0274, R0275 and R0271 monitors the
DC output of the TR-800 power supply. If the voltage exceeds 16.4Vdc, the output of U0206B-7 goes
high and turns on relay driver Q0224. The station switches to battery power although there is no
indication at the “BAT ON” output point.
Zener diodes VR0210, VR0211, VR0212, VR0215 and VR0216 protect the electronics from damage by
accidental static discharge.
Fuse F0203-15A and diode and CR0215 provide protection from reverse polarity if the battery is
inadvertently connected “backward”.
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TR-800 Service Manual
Variable speed, Temperature controlled Fan Circuit:
The TL431AILP is a three-terminal programmable shunt regulator diode. This monolithic IC voltage
reference operates as a low temperature coefficient zener that is programmed from 6Vdc to 12Vdc with
a resistor network consisting of R0296, R0297 and an NTC thermistor Rth0201. Q0219 operates as a
fast power switch between “ON” and “OFF” (similar to PWM mode) controlled by the output at cathode of
TL431AILP. The rotating speed of brushless fan is voltage controlled at collector of Q0219. The higher
temperature, the higher power supply to the fan, hence the faster it rotates.
Battery charging (Float Maintenance) Circuit:
The battery charging circuit is intended for use with sealed lead acid gel cell batteries. The charging
current, limited to approximately 400mA, is used to maintain a “float” charging condition on the battery.
After operating the TR-800 station on the battery for long periods of time, or if the battery reaches the low
battery limit of the revert circuit, the battery must be recharged with an external high-current charger.
Recharging with the internal trickle charger requires an extended period of time.
The trickle charging voltage is derived from AC mains. Resistors R0269 limit the charging current to
approximately 400mA to a partially discharged battery (terminal voltage of 12Vdc). Once the battery is
fully charged, the current will decrease to 10 to 25mA to float the battery at a terminal voltage of 13.6Vdc.
NOTE
This trickle charger is intended to maintain the
battery for long periods of time between power
failures and is not intended for charging a fully
discharged battery. If the battery is completely
discharged, it must be removed and charged via a
battery charger with higher current capability.
Figure Ⅱ Block Diagram
-15-
TR-800 Service Manual
Glossary
Bi-directional Repeater:
A repeater configuration in which the main and slave radios perform both receive and transmit functions.
The audio and Rx Carrier signals from the receiver of the slave radio are routed to the transmitter of the
main radio. Unlike the unidirectional case, though, the audio and Rx Carrier signals of the receiver of the
main radio are also routed to the transmitter of the slave radio.
Cross band repeater:
A repeater in which the slave radio operates in a different frequency band than the main radio. Example:
the slave radio operates on 162.075MHz in the high band VHF and the main radio operates on
452.025MHz in the 450-470MHz UHF band. Cross-band repeaters may be either unidirectional or
bi-directional.
Main Radio:
The radio that performs the transmitting functions in the TR800 repeater station in the general
unidirectional application.
Relay Delay Time:
The time duration the repeater remains in transmit mode after an active or valid signal is no longer
detected.
Repeater Knockdown:
To deactivate a repeater or to remove it from service. Only the slave radio turns on at power up.
Repeater Setup:
To activate a repeater or to place it into service. Both radios turn on at power-up (repeater functional).
Single band repeater:
A repeater in which both the slave radio operates in a same frequency band. Example: receive at
455.075MHz and transmit at 460.075MHz in the 450-470MHz UHF band.
Slave Radio:
The radio that performs the receiving functions in the TR800 repeater station in the general
unidirectional application.
Unidirectional Repeater:
A repeater configuration in which the slave radio receives signals only from the field radios and the main
radio transmits signals only to the field radios.
-16-
TR-800 Service Manual
„ MPU Pins
Repeater front panel
(MPU Model: uPD780114, CRYSTAL: 9.8304MHz）
PIN No.
PIN NAME
I/O
DESCRIPTION
AVref
Connect VDD
AVss
To GND
IC(VPP)
To GND (programming pin)
VDD
+5V
Vss
GND
X1
Clock Input
X2
Clock output
RESET
Knockdown
XT1
NC
10
XT2
NC
11
SHIFT
Clock Frequency Shift
Active: H
12
PTT/O
Main radio PTT signal output control
Active: L
13
RxD2
Analog serial data input (slave MPU communication)
14
TxD2
Analog serial data output (slave MPU communication)
15
RSW0(DN)
Encoder knob [DOWN] button input
16
RSW1(UP)
Encoder knob [UP] button input
active
17
LCDBL/LED0
LCD backlight control/LED0
18
LCDCS/LED1
LCD chip selection output/LED1
19
LCDSOD/LED2
I/O
LCD data reading/LED2
20
LCDDAT/LED3
LCD data output/LED3
21
LCDCLK/LED4
LCD clock output/LED4
22
EVss
GND
23
E VDD
Connect VDD (programming pin)
24
AFTest
Audio test control
25
SpkSW
Main/slave speaker output control
H: Main unit outputs
L: slave radio outputs
26
RXD1
Serial data input (main MPU communication)
27
TXD1
Serial data output (main MPU communication)
28
SETUP/O
Repeater setup output
29
HOOK/RXD0
Palm microphone HOOK input/serial data input
30
TXD0
Serial data output
PTT active: L
31
RLED
Red LED
Active: H
32
GLED
Green LED
Active: H
33
PTT
Palm microphone PTT key input
PTT Active: L
34
OPT/O
OPT signal output
Active: H
short-circuit resistor added
Connect VDD
Open
High/low level
Rising Edge / Falling Edge
Active: H
(LCD/LED I/O)
Active: H
Active: L
-17-
TR-800 Service Manual
35
RPT/O
RPT signal output
Active: H
36
KEYBL
Keypad backlight control
37
Rx Tone/I
Slave radio signal input
Active: L ()
38
SETUP/I
SETUP signal input
On: H (rising edge trigger)
39
OPT/I
OPT key input
Active: L
40
RPT/I
RPT key input
Active: L
41
DN
DN key input
Active: L
42
UP
UP key input
Active: L
()
43
SCAN
SCAN key input
Active: L
()
44
MONI
MONI key input
connected)
Active: H
Active: L
()
()
()
(external pull-up resistor
-18-
TR-800 Service Manual
„ TR-800 Part List (Logic board)
No.
P/N
Part Description
Ref. No.
Address
3001060000000
Chip resistor 0603 0Ω J 1/10W
R0158
B3B
R0164
B2E
R0170
B4C
R0176
B4C
R0178
B4B
R0181
B4B
R0182
B4B
R0183
B4B
R0184
B4B
R0185
B3B
R0186
B3B
R0199
B2B
R1101
B4C
R1103
B3B
R1113
B4F
R0148
B3C
R0149
B3C
R0163
B3A
R0172
B3C
R0173
B3C
R0174
B3C
R0175
B3C
R0179
B4B
R0180
B4B
R0195
B1C
R0103
B2G
R0104
B3E
R0115
B3E
R0117
B3E
R0130
B3F
R0140
B3E
R0141
B3E
R0143
B2E
R0146
B1B
R0147
B1B
R0171
B3B
3001061020010
3001061030010
Chip resistor 0603 1KΩ J 1/10W
Chip resistor 0603 10KΩ J 1/10W
Qty.
Remark
15
10
12
-19-
TR-800 Service Manual
3001061040010
Chip resistor 0603 100KΩ J 1/10W
R1121
B2D
R0118
B3F
R0145
B1B
R0198
B4E
R1106
B2D
3001061220000
Chip resistor 0603 1.2KΩ J 1/10W
R0125
B2E
3001061510000
Chip resistor 0603 150Ω J 1/10W
R0168
B2A
3001061520000
Chip resistor 0603 1.5KΩ J 1/10W
R0127
B3F
3001061540010
Chip resistor 0603 150KΩ D 1/10W
R1115
B2D
3001062230000
Chip resistor 0603 22KΩ J 1/10W
R0139
B2F
R0121
B3E
10
3001062240010
Chip resistor 0603 220KΩ J 1/10W
R0197
B4E
11
3001062720000
Chip resistor 0603 2.7KΩ J 1/10W
R0107
B3G
R0126
B3G
R0128
B3F
12
3001062730000
Chip resistor 0603 27KΩ D 1/10W
R0166
B3A
13
3001064710000
Chip resistor 0603 470Ω J 1/10W
R0129
B2F
14
3001064720000
Chip resistor 0603 4.7KΩ J 1/10W
R0105
B3E
R0124
B2D
R0142
B2E
R0159
B3B
R0177
B4C
R1114
B4C
R1118
B4B
R0101
B3G
R0102
B2G
R0106
B3G
R0108
B2E
R0109
B3G
R0110
B3G
R0111
B3G
R0112
B3F
R0150
B3C
R0151
B3C
R0152
B3C
R0153
B3C
R0154
B3C
R0155
B3C
R0156
B3E
R0160
B3B
R0161
B4E
R0162
B4E
R0187
B3B
15
3001064730000
Chip resistor 0603 47KΩ J 1/10W
25
-20-
TR-800 Service Manual
16
3001065620010
Chip resistor 0603 5.6KΩ J 1/10W
R0188
B3B
R0189
B3B
R0190
B3B
R1105
B3B
R1111
B4B
R1112
B3B
R0138
B2F
R0157
B2C
17
3001065630000
Chip resistor 0603 56KΩ J 1/10W
R1109
B2D
18
3001066800000
Chip resistor 0603 68Ω J 1/10W
R0167
B3A
19
3001066820000
Chip resistor 0603 6.8KΩ J 1/10W
R1104
B3B
20
3001066830000
Chip resistor 0603 68KΩ J 1/10W
R1110
B3D
21
3001162290000
Chip resistor 2010 2.2Ω J 1/2W
R0193
B4E
R0194
B4D
22
3001162700000
Chip resistor 2010 27Ω J 1/2W
R0165
B4A
23
3002994720010
Trimmer resistor 2.7*2.0*1.6 4.7KΩ ±25%
RV0104
B3A
24
3009161510000
Chip thick-film resistor 2010 150Ω F 3/4W
R0169
B4C
25
3101061010010
Chip capacitor 0603 100PF J 50V
C0163
B4F
C0164
B4F
C0165
B4F
C0168
B4F
C0171
B3F
C0131
B2B
C0132
B2B
26
3101062200010
Chip capacitor 0603 22PF J 50V
27
3101066800000
Chip capacitor 0603 68PF J 50V
C0133
B3B
28
3101071020010
Chip capacitor 0805 1000PF K 50V
C0150
B1C
12
C0151
B1B
C0152
B4D
C0154
B1C
C0155
B1C
C0156
B5E
C0157
B5E
C0162
B4F
C0166
B4F
C0169
B5F
C0170
B5F
C0175
B1C
C0124
B2E
C0130
B2B
C0134
B3B
C0135
B4E
C0136
B4E
C0143
B2B
29
3101071030010
Chip capacitor 0805 0.01UF K 25V
-21-
TR-800 Service Manual
30
31
32
33
34
35
36
3101073340000
3101074710010
3104081060070
3104081560020
3213212102010
3221506601000
3301240700000
Chip capacitor 0805 0.33UF K 16V
Chip capacitor 0805 470PF K 50V
Ta-capacitor 1206 10UF M 16V
Ta-capacitor 1206 15UF M 10V
Multi-layer inductor 1008 1uH
Chip ferrite bead 0603 600Ω±25%
Schottky diode
MBD301
C0149
B1B
C0161
B4E
C0110
B2E
C0111
B3E
C0117
B2E
C0118
B2F
C0120
B3E
C0121
B2E
C0172
B2D
C0103
B3E
C0112
B2E
C0123
B4E
C0126
B3A
C0129
B2B
C0137
B3A
C0138
B3A
C0139
B3B
C0140
B2A
C0142
B2B
C0144
B4B
C0145
B2D
C0146
B3D
C0148
B1B
C0102
B3E
C0104
B3E
C0105
B3E
C0147
B1C
C0160
B4F
C0127
B1B
C0128
B2A
L0101
B4F
L0102
B4F
L0103
B2B
L0105
B2B
L0106
B4F
CR0101
B3G
14
37
3302030500020
Zener diode UDZSTE(1718B)18V
VR0108
B4F
38
3302240000040
Zener diode BZX84C5V1
VR0101
B2F
VR0102
B3E
VR0103
B2E
VR0104
B3G
-22-
TR-800 Service Manual
39
40
3307110100090
3399010600000
LED KPT-1608CGCK Green
Switching Diode HSB123TR-E
VR0105
B4E
VR0106
B2E
VR0107
B2F
CR0107
T4F
CR0108
T3F
CR0111
T4F
CR0112
T2F
CR0113
T2D
CR0114
T3D
D0112
B4B
D0113
B4B
D0114
B3B
D0115
B4B
D0116
B3B
D0117
B4B
D0118
B2B
D0119
B3B
41
3403002000000
Transistor 2SB1132L02T100R
Q0118
B4C
42
3403008000010
Transistor DTC114EE(TL)
Q0102
B3E
Q0105
B2E
Q0111
B2E
Q0114
B2D
Q0115
B3A
Q0117
B2A
Q0119
B3B
Q0120
B2D
Q0121
B3D
43
3410001000040
Transistor 2SA1641(S.T)
Q0113
B3A
44
3414001000020
Transistor MMBT3906
Q0101
B3G
Q0106
B3F
45
3414001000030
Darlington Transistor MMBTA13
Q0116
B2E
46
3414001000040
Transistor MMBT3904
Q0103
B3G
Q0107
B3G
Q0108
B3F
Q0123
B4C
Q0124
B5B
47
3503020000030
FET 2SK1824-T1-A
Q0112
B3B
48
3605008001690
Operational amplifier NJM2904M
U0102
B3E
U0105
B2F
U0103
B4E
U0107
B2E
49
3607037000000
Logic IC(NAND)-MC14011
50
3608002020890
Power management IC TA7805F(TE16L.F) 5V
U0108
B2A
51
3609018001090
IC BU4066BCFV Quad analog switch IC
U0104
B3E
-23-
TR-800 Service Manual
52
3610003000000
SCM UPD78F0114HGB-8ES
U0110
B3B
53
3701098340020
Crystal 9.8304MHz NX8045GB SMD
X01
B3B
54
4002000000070
Fuse 0466.200.NR 0.2A/125V
F0101
B5F
55
5202008100020
Chip socket 52746-0870 8pin
J0110
T3A
56
5202011100010
Chip socket B11B-ZR-SM3-TF(LF)
J0106
B1C
J0107
B5D
57
410R800100030
TR-800 Logic board PCB FR4 1.6T/2L/2P
58
3001063310010
Chip resistor 0603 330Ω J 1/10W
59
3303040400010
R0191
B2D
R0192
B3D
Switch diode BAS16
CR0103
B2F
C0141
B2B
60
3104081060080
Ta-capacitor 1206 10UF M 10V
61
3002995020000
Ceramic alloy potentiometer 5KΩ K CT-94EW
RV0101
B2D
RV0102
B3E
RV0103
B2D
C0101
B3G
62
3002995030020
Ceramic alloy potentiometer 50KΩ K CT-94EW
63
3101991050000
Polyester capacitor 4.5*13.5*10 1uF J 63V
64
3301200200000
Rectifier diode 1N4004 DO-41
CR0104
B3F
65
3307110600010
LED L-483GDT Green 2.5*5mm 2.2V
CR0105
T2A
66
3307110600020
LED L-483IDT Red 2.5*5mm 2.0V
CR0106
T2A
67
3307110600030
LED L-483YDT Yellow 2.5*5mm 2.1V
CR0102
T4A
68
3307110600050
LED L-483EDT Orange 2.5*5mm 2.0V
CR0119
T3A
69
3307990000080
LED LT5CB4-81-XA400714 super bright blue
CR0109
T2D
CR0110
T3D
U0109
B1B
70
3614037000000
3-Terminal voltage regulator IC MC78M09
71
4301060000010
Toggle switch SSGM1A0100
S01
B2G
72
4301080000040
Momentary contact switch (SPEA122200)
S02
T4A
73
4302030000040
Channel switch RH90N74AE20
K02
T4D
74
5110000000190
LCD Module JIC-MSBF-8943-06 (red backlight)
T3B
75
5202002100100
Pin socket 89400-0220 2pin
J0111
B1C
J0113
B4C
J0102
B1E
J0103
B2C
J0104
B1D
76
5202015200000
HDB15/F socket (DIP) 5512-15SA-01-BRJ-F1
77
5202040100030
Dual-row pins 40pin
J0113
B4E
0.1
78
5204008000000
RJ45 socket MODS-A-8P8C-H-S 8-line SHIELDED
J0109
B5G
79
7000037000000
Heat sink 15.3*17mm
U0109
B1B
80
7103008001010
Machine screw M3.0*8.0mm pan-head (Nickel-plating)
U0109
B1B
81
4308990000000
Low signal Relay G5V-1 9V DC
KR03
B5C
82
4308990000060
Low signal relay G5V-2-DPDT 12VDC 2A
KR00
B4C
-24-
TR-800 Service Manual
TR-800 Part List 1 (Power Management Board)
No.
P/N
3001061000000
3001061020010
3001061030010
3001061040010
Part Description
Ref. No.
Address
Qty.
Chip resistor 0603 10Ω J 1/10W
R2103
T2E
Chip resistor 0603 1KΩ J 1/10W
R0285
T2B
R2101
T2D
R0278
T2B
R0284
T2A
R0287
T3B
R2100
T2B
R0274
T1A
R0281
T2A
R0289
T3B
Chip resistor 0603 10KΩ J 1/10W
Chip resistor 0603 100KΩ J 1/10W
3001062720000
Chip resistor 0603 2.7KΩ J 1/10W
R0299
T3A
3001061530010
Chip resistor 0603 15KΩ J 1/10W
R0280
T1B
R0292
T2F
3001062220000
Chip resistor 0603 2.2KΩ J 1/10W
R0294
T2D
3001062230000
Chip resistor 0603 22KΩ J 1/10W
R0271
T1A
R0286
T2B
R0290
T3B
R0291
T3A
3001062430010
Chip resistor 0603 24KΩ J 1/10W
R0275
T1A
10
3001063330010
Chip resistor 0603 33KΩ J 1/10W RCT03333J
R0279
T1B
R0293
T2E
R0267
T2F
R0268
T2E
R0272
T1A
R0273
T2A
R0282
T2A
R0288
T3B
R0295
T2D
R2102
T2D
R2104
T2E
11
12
3001064710000
3001064720000
Chip resistor 0603 470Ω J 1/10W
Chip resistor 0603 4.7KΩ J 1/10W
Remark
13
3001066830000
Chip resistor 0603 68KΩ J 1/10W
R0296
T3E
14
3001069130000
Chip resistor 0603 91KΩ D 1/10W
R0297
T3E
15
3001081020000
Chip resistor 1206 1KΩ J 1/4W
R0270
T1B
16
3101071030010
Chip capacitor 0805 0.01UF K 25V
C0239
T3E
17
3101071040000
Chip capacitor 0805 0.1UF K 25V
C0226
T2B
-25-
TR-800 Service Manual
18
3101074710010
Chip capacitor 0805 470PF K 50V
C0233
T2A
C0240
T2D
C0227
T2B
C0228
T1B
C0229
T2B
C0231
T1A
C0235
T2A
C0236
T3A
C0237
T3A
C0238
T3A
19
3101081050020
Chip capacitor 1206 1UF K 25V
C0242
T2D
20
3414001000040
Transistor 300MHz 0.3V
Q0126
T2A
Q0218
T3B
Q0220
T2D
Q0224
T1A
Q0217
T3B
Q0222
T1B
U0205
T3B
U0206
T1A
CR0212
T3D
CR0213
T2F
CR0216
T2A
CR0217
T2B
CR0218
T3B
CR0220
T2B
CR221
T2B
21
22
3414001000020
3605008001690
Transistor PNP-SOT23-250MHz-0.3V
Operational amplifier NJM2904M DUAL
Switch diode BAS16
23
3303040400010
24
3413001000000
Transistor UFMMT718 PNP SOT23
Q0223
T1B
25
3104082250030
Ta-capacitor 1206 2.2UF K 16V
C0234
T3B
26
3302240000050
Zener diode BZX84C27
VR0208
T3D
10
VR0209
T2E
VR0210
T1B
VR0211
T1A
VR0212
T2E
VR0213
T2A
VR0214
T2A
VR0215
T3F
VR0217
T1B
F0202
T2B
27
4011000000010
SMD fuse SMD 200F-2 15V 2A
28
410R800200100
TR-800 power supply board PCB FR4 1.6T/2L/4P
29
3302240000030
Zener diode-BZX84C7V5
30
3003991040010
Thermistor sensor 100KΩ ±1% NTC
31
3099990228000
Leaded resistor 0.22Ω J 2W
VR0209
T2E
VR0218
T2A
Rth0201
B3D
R0269
B3C
-26-
TR-800 Service Manual
32
3103991060020
Electrolytic capacitor 4*7 10UF ±20% 25V
C0230
B2B
33
3103991070090
Electrolytic capacitor 6*12 100UF
C0225
B2D
C0232
B2D
±20% 25V
34
3103992280020
Electrolytic capacitor 12.5*25 2200uF ±20% 25V
C0241
B2D
35
3103994770030
Electrolytic capacitor 2512 470UF 25V M 105℃
C0243
B3E
36
3216599224000
Bobbin inductor 0.35mm 220uH PI-DRU002-0031
L0201
B2E
37
3301160200000
Rectifier diode 1N5401D
CR0224
B3E
38
3301200200000
Rectifier diode 1N4004 DO-41
CR0214
B1B
CR0223
B1B
CR0222
B2E
U0209
B2D
CR0215
B1F
39
3301200200010
Rectifier diode 1N5821_rlg
40
3301240400000
Three-terminal regulator diode TL431
41
3004116050000
Varistor 2512 6MΩ 0-0.05%/℃
42
3416002000010
Transistor TIP42C PNP
Q0219
B1E
43
4002000000040
ATO Fuse clip 100057 15A
F0203
B2F
44
4210080000700
Speaker connection cable (2Pin plug) 2-core 80mm
Rth0201
B3D
45
4200250000000
TR-920 DC power cable#14 250mm
CN0201
B3D
46
4200250000100
TR-920DC power cable#14 250mm
CN0201
B3D
47
4200400000010
Connection cable 2PIN 450MM UL1007 #26
CR0219
B3A
48
4200400000200
Power cable L400MM 2PIN UL1015 #14
CN0202
B1D
49
4200250000200
Power cable L250MM 2PIN UL1015 #14
CN0203
B1D
50
4308990000010
Power relay G8P-1C4P-SPDT 12VDC 20A
KR01
B2C
51
5202002100100
Pin socket 89400-0220 2pin
Rth0201
B3D
52
5202002100000
Socket 3750S-02 2pin
CONN1
B3F
53
5202040100030
Dual-row pin 40pin
BAT LOW
B2B
0.05
54
5204002000000
DC power socket L150MM UL1015 #14
CN0204
B1F
55
7000037000000
Heat sink 15.3*17mm
Q0219
B1E
56
7103008001010
Machine screw M3.0*8.0mm Pan-head
Q0219
B1E
-27-
TR-800 Service Manual
„ Adjustment Description
Logic Board Adjustment
Test Apparatus
1.
2.
3.
4.
5.
20A/30V Power Supply
1set
Ammeter
1set
Digital Voltmeter
1set
Test Jumper Cables (mating with test ports of TR-800 and the communication test set)
Communication System Analyzer (such as HP8921 series)
1set
Adjustment
Radio Configuration
Use HR-800E to program the TR-800. Table Ⅰ and table Ⅱ illustrate the factory default settings in a
general operation mode. The “Ignition Sense Time” of main radio defines time delay from SETUP to
KNOCKDOWN.
TableⅠ Radio Programming Preset
Item
Main Radio
Slave Radio
AUX3 I/O
Ext. PTT
Ext. PTT
AUX4 I/O
Rx Carrier(Tone)
Rx Carrier(Tone)
AUX5 I/O
Rx Tone(Carrier)
Rx Tone(Carrier)
Horn Alert Logic
NA
1s
Ignition Sense
0h0m
NA
Drop Out Delay
3s
Scan Gap Time
400ms
Repeater Hang Time
2s
Table Ⅱ Logic Board Switch Configuration：
Toggle Switch
S01-1
S01-2
S01-3
S01-4
S01-5
S01-6
S01-7
S01-8
S01-9
S01-10
Factory Default
ON
OFF
OFF
ON
ON
ON
ON
ON
OFF
ON
Test Procedure
a)
Base Station Mode
Make sure the TR-800 is in SETUP state and deactivate RPT & OPT functions. The TR-800 operates on base
station mode with main radio to transmit and slave radio to receive (similar to a mobile radio). Correctly cable the
test ports to communication system analyzer before adjustment.
Item
Slave
receive
radio
Condition
Measure
Instrument
Channels
Communication
with/without
test set
Adjustment
Point
J0109
Point
K02
Method
Rotate the knob to
adjust the volume
Specification/Remark
Squelch open sensitivity:
-118±3dBm
-28-
TR-800 Service Manual
tones
to
rated
check
power,
receiver’s
squelch
open/off
sensitivity,
with
signaling
open
squelch
sensitivity,
audio distortion &
Squelch off sensitivity:
-118±3dBm
CCTSS squelch sensitivity:
-118±3dBm
CDCSS squelch sensitivity:
-118±3dBm
Audio distortion: ≤3%@3W
≤10%@5W
Rx S/N
Rx S/N: ≥45dB (wide)
≥40dB (narrow)
Adjust
the
audio
Main
Any channel
radio
without
transmit
tones
Main radio
Communication
Tx
test set
connector
MIC
output
amplitude
of
Analyzer
to
Tx frequency deviation:
6-10mVinto J0109
3.0±0.2kHz (wide)
3pin;
Tx
1.5±0.1kHz (narrow)
frequency deviation
Modulation distortion: ≤3%
matching
Tx S/N: ≥45dB (wide)
check
60%
≥40dB (narrow)
system Dev.; check
modulation
distortion and Tx
S/N
b)
Uni-directional Repeater Mode (Forward)
Make sure the TR-800 is in SETUP state and activate RPT function. The TR-800 operates on uni-directional
repeater mode with slave radio keys main radio to repeat transmission (forward direction). Correctly cable the test
ports to communication system analyzer before adjustment.
Item
Measure
Condition
Adjustment
Instrument
Point
Point
Specification/Remark
Method
Long press monitor key, the
MONI
Any
channel
MONI
slave
Check up
radio
processes
monitoring, with green LED
flashes
Adjust
the
signal
output amplitude of
Uni-direction
al
repeater
(forward)
Channels
with/
without
tones
Communication
test set
connector
to
-47dBm,
adjust
RV0101 to obtain a
Main radio
Tx
Analyzer
RV0101
60%
system
Duplex sensitivity:
-116(+1/-3dBm)
CTCSS sensitivity:
-116(+1/-3dBm)
CDCSS sensitivity:
-116(+1/-3dBm)
deviation; check the
Repeater frequency deviation:
modulation
2.9±0.2kHz (wide)
distortion and RX
1.4±0.1kHz (narrow)
S/N; decrease the
Repeater audio distortion:
signal
output
≤3%@3W
-29-
TR-800 Service Manual
amplitude
of
the
analyzer, check the
≤10%@5W
Tx S/N: ≥42dB (wise)
≥37dB (narrow)
duplex sensitivity.
Max. Power output (without
duplexer):
45±2W(UHF)
50±2W(VHF)
Check
Any
Rx
audio
output
channel
Communication
without
test set
the
audio
output amplitude of
J0103
pin
on
the
tones
connector
In
the
repeater
setup
Repeater
Any
Hang Time
channel
Audio output: ≥200mV
accessory
Communication
test set
state,
terminate the signal
output
of
the
Repeater hang time: 2S
analyzer, check the
repeater hang time.
Adjust
the
audio
output amplitude of
the analyzer MIC to
120mVinto 3 pin of
Any
Linked audio
channel
Communication
relay
without
test set
tones
J0103;
Main radio
Tx
RV0103
RV0103 to obtain a
60%
connector
adjust
system
deviation,
check
Tx frequency deviation:
3.0±0.2kHz (wide)
1.5±0.1kHz (narrow)
Modulation distortion: ≤3%
Tx S/N: ≥45dB (wide)
≥40dB (narrow)
modulation
distortion and TX
S/N
Use
Repeater
Any
Signal generation
Scan
channel
or radio
Set
SCAN
key
signal
generator
portable
transmitter
whether
repeater
to
scanning
and
repeat
testing on other channels.
Uni-directional Repeater Mode (reverse)
Make sure the TR-800 is in SETUP state and activate OPT function. The TR-800 operates on uni-directional
repeater mode with slave radio keys main radio to repeat transmission (backward direction). Correctly cable the test
ports to communication system analyzer before adjustment.
Item
Condition
Measure
Instrument
Adjustment
Point
Point
test
works correctly and processes
active
retransmission,
c)
or
Specification/Remark
Method
-30-
TR-800 Service Manual
Long press the monitor key,
Any
MONI
channel
MONI
the
Check up
main
radio
monitoring,
with
processes
red
LED
flashes.
Adjust
the
audio
output amplitude of
the analyzer MIC to
7mVinto 3 pin of
Any
Slave
radio
transmit
channel
Communication
without
test set
J0109, check the
Slave
radio
Rx
TX frequency dev.
Matching of 60%
connector
tones
system Dev., check
duplex frequency deviation:
3.0±0.2kHz (wide)
1.5±0.1kHz (narrow)
Modulation distortion: ≤3%
Tx S/N: ≥ 45dB (wide)
≥40dB (narrow)
modulation
distortion and TX
S/N.
Duplex sensitivity:
-117(+1/-3dBm)
Adjust
the
signal
CTCSS duplex sensitivity:
-117(+1/-3dBm)
output amplitude of
Channels
Uni-directional
Communication
with/
repeater
without
(reverse)
test set
Slave
radio
Rx
RV0102
connector
tones
Analyzer
to
-47dBm,
adjust
CDCSS duplex sensitivity:
-117(+1/-3dBm)
RV0102 to obtain a
Repeater frequency deviation:
frequency dev. of
2.9±0.2kHz (wide)
60%;
1.4±0.1kHz (narrow)
check
the
modulation
Repeater audio distortion:
distortion and TX
≤3%@3W
S/N; decrease the
≤10%@5W
signal
output
Tx S/N: ≥42dB (wide)
amplitude,
check
≥37dB (narrow)
duplex
Max. Power output (without
the
sensitivity.
duplexer):
45±2W(UHF)
50±2W(VHF)
d)
Item
Radio Kill Function
Measure
Condition
Instrument
Adjustment
Point
Point
Specification/Remark
Method
Transmit
Remote
Knockdown
code
via
Radio
signaling
Set S01-2 “ON”
the main radio, orange LED goes
out and the TR-800 is in knockdown
state
e)
the
portable radio to remotely disable
Channel with
optional
DTMF
Knockdown State
-31-
TR-800 Service Manual
Item
Condition
Measure
Instrument
Adjustment
Point
Point
Method
Specification/Remark
Short or long press of the monitor
Knockdown
state
Any channel
Handheld
with SETUP
microphone or
disabled
test cable
and scan button is disabled; unable
MONI,
SCAN
pushbutton
to transmit with palm microphone or
test cable connected, only receives
(i.e. only slave radio works and
receive only)
f)
Provisory Settings
At the end of the test, set S01-2, S01-3, S01-9 to “OFF” to prohibit users the access to the D.B.D feature, only your
dealer or skilled technicians are authorized to enable this feature upon the requirement of users.
-32-
TR-800 Service Manual
Power Management Board Adjustment
Test Apparatus
1、 20A/30V Power Supply
2、 Analog ammeter
3、 Digital Voltmeter
4、 12V lead acid battery (not fully charged)
1set
1set
1set
1set
Circuit detect and temperature-control test
Connect CN0201 (To Power Supply) and CN0204 (To Ext. Battery) with DC power output 13.8V respectively.
Item
Condition
Measure
Instrument
Adjustment
Point
Point
Specification/Remark
Method
Gradually increase the voltage of
AC
to
Increase
DC
over-voltage
detect
Digital
voltmeter
CR0219
CN0201
or
CN0201 to 16.4V, the protection
decrease
circuit
the
to DC power supply. Decrease the
input
will drive KR01 to
revert
voltage of CN0201 to 13.4V and
voltage
return to AC power supply.
Remove the voltage of CN0201,
driving KR01
AC
mains
fail
detect
Close
CR0219
CN0201
open
or
input
power
to revert to DC
supply
illuminates;
with
Apply
CR0219
voltage
to
CN0201, and KR01 is activated,
voltage
then return to AC power supply with
CR0219 goes out.
Gradually decrease the voltage of
CN0204 to 10.2V, driving KR01 to
cut down DC power supply, with
CR0219
goes
out,
“BAT
LOW”provides a low; Apply voltage
Battery
detect
low
Close
CN0201
voltage
Digital
voltmeter
CR0219
,BAT
CN0204
LOW
Raise
or
to CN0201, with CR0219 flashes
lower
input
briefly, then return to AC power
supply; remove the voltage of
voltage
CN0201, gradually increase the
voltage of CN0204 to 12V, the
KR01 is activated to toggle to DC
power
supply
with
CR0219
illuminates.
Heat the Rth0201 with soldering
Thermal
controlled fan
Soldering
iron or hot
air gun
Digital
voltmeter
Fan
Rth0201
Heating
cooling
or
iron or hot air gun, check the
voltage
of
fan
increases
(6.0V~11.5V) with the air
increases.
-33-
flow
TR-800 Service Manual
Floating charge test
Connect CN0204 to 12V battery; CN0201 remains connected with 13.8V power supply.
Item
Floating
charge
Condition
Measure
Instrument
Analog
Ammeter
Adjustment
Point
Point
Method
Specification/Remark
Check the charging current is about
CN0204
Check
400mA, and will drop to 10-25mA
when fully charged.
-34-
TR-800 Service Manual
Duplexer Instructions
Electrically a duplexer is a device using sharply tuned resonate circuits to isolate a transmitter from
a receiver. This allows both of them to operate on the same antenna at the same time without the
transmitter RF frying the receiver. Before using your repeater, you must tune the duplexer using one
of the following three methods for ensuring that the duplexer is tuned to the correct frequencies of
operation:
‹ Pre-Tuned Method (preferred method)
Order the duplexer from the manufacturer or supplier pre-tuned to the desired frequencies. This
is not a “method” of tuning the duplexer but does not require any field tuning or test equipment.
Note that there must be a separation of the transmit and receive frequencies. This is called
“split”. On two meters the split is about 600 KHz. On 70cm the split is much easier to do 5MHz.
‹ Visual Method
Use a tracking (sweep) generator and spectrum analyzer to adjust the tuning of the pass bands
and reject bands of the duplexer.
‹ Emergency Method
The following paragraphs address a simple method of tuning a “notched” duplexer such as
DT04 UHF duplexer. This is not as accurate a method of tuning as the visual method afforded
by the tracking generator /spectrum analyzer sweep setup but it is much less costly. It may be
sufficiently good for all but the most exacting applications.
Use this method only when the operating frequencies of the main radio and slave radio meet
the requirements of the duplexer. The duplexer you can order from HYT is notched type
(band-reject) only and the minimum separation available is 4MHz on UHF band and 3.5MHz on
VHF band. Note that this notched type duplexer offers a considerably narrow bandwidth. If the
operating transmitter/receiver frequencies for the TR-800 are appreciably different than that of
duplexer specification, degraded performance of the repeater will result.
The following procedure assumes that the duplexer is applied and the radios should be connected
to the proper ports of the duplexer with the RF coaxial cables provided in the TR-800 kit. The
duplexer should not be mounted on the bracket and the tuning screws of the duplexer (on the other
side of the cavities, opposite to the RF connectors) should be accessible.
Programming the Radios
1. Program the main radio with an additional “receive only” mode at the frequency of receive
(assume that the main radio operates as transmitter of a uni-directional repeater).
2. Program the slave radio with an additional “receive only” mode at the frequency of transmit
(assume that the slave radio operates as receiver of a uni-directional repeater).
3. Connect a communications test set, such as HP8921 series, or an RF signal generator to
the antenna port of the duplexer. The test set should be operating in the “Generate” mode.
Modulate the RF source with a 1kHz tone at 60% system deviation to facilitate “hearing”
the signal during the tune-up procedure.
Tuning the Main Radio Section
Tuning the main radio section of the duplexer begins with the tuning screw closest to the antenna
port of the duplexer.
-35-
TR-800 Service Manual
1.
2.
3.
4.
5.
Adjust the frequency of the communication test set or generator to that of receive.
Place the main radio on the receive frequency mode defined in Step 1 under
“Programming the Radios”.
Adjust the level of the communication test set or generator until the main radio emits a
weak signal.
Increase the level of the communication test set or generator by approximately 20dB.
Adjust the tuning screw of the duplexer for the greatest rejection of the signal. This will
appear as a noisier signal. If necessary:
5A. Slightly loosen the locking nuts of the tuning screws to allow the tuning screws to turn more
freely (but not “sloppy”) and
5B. Increase the level of the communication test set or generator to maintain an audible 1kHz
tone.
6. Repeat steps Step 4, Step 5, Step 5A and Step 5B for each of the tuning screws on the
duplexer. Begin with the tuning screw closest to the antenna port and move in order toward
the tuning screw closest to the main radio port.
7. Tighten the locking nuts of the tuning screws.
To avoid damage to the tuning screws and to allow fine tuning of the duplexer, do not over
tighten the locking nuts.
8.
Repeat Step 5, Step 5A and Step 5B to fine-tune the main radio section of the duplexer.
Tuning the Slave Radio Section
Tuning the slave radio section of the duplexer begins with the tuning screw closest to the antenna
port of the duplexer.
9. Adjust the frequency of the communication test set or generator to that of transmit.
10. Place the slave radio on the receive frequency mode defined in Step 2 under “Programming
the Radios”.
11. Adjust the level of the communication test set or generator until the slave radio emits a
weak signal.
12. Increase the level of the communication test set or generator by approximately 20dB.
13. Adjust the tuning screw of the duplexer for the greatest rejection of the signal. This will
appear as a noisier signal. If necessary:
13A. Slightly loosen the locking nuts of the tuning screws to allow the tuning screws to turn
more freely (but not “sloppy”) and
13B. Increase the level of the communication test set or generator to maintain an audible 1kHz
tone.
14. Repeat steps Step 12, Step 13, Step 13A and Step 13B for each of the tuning screws on the
duplexer. Begin with the tuning screw closest to the antenna port and move in order toward
the tuning screw closest to the slave radio port.
15. Tighten the locking nuts of the tuning screws.
To avoid damage to the tuning screws and to allow fine tuning of the duplexer, do not over
tighten the locking nuts.
16. Repeat Step 13, Step 13A and Step 13B to fine-tune the slave radio section of the duplexer.
-36-
TR-800 Service Manual
„ Disassembly and Installation
Removing and Installing the Top Cover
1. using a screwdriver to Remove the seven screws (M3.0X6.0) ① that locking the top cover of
repeater, shown as Figure 1.
2. Remove the top cover ②, shown as Figure 1.
3. Install the top cover as reverse steps.
Figure 1
Removing and Installing the Front Panel
1. Press the 6 latches that locking the front panel to the housing to separate and remove them from
the housing ①, shown as Figure 2.
2. Remove the front panel ② shown as Figure 2, and pull out the two set of jumper wires, two repeater
cables, accessory connector cable, and connecting cable of the DC power indication LED.
3. Install the front panel as reverse steps.
Figure 2
-37-
TR-800 Service Manual
Removing and Installing the Control Panel
1. Remove the Volume Control knob ① shown as Figure 3.
2. Remove the nut ② using a special spanner, shown as Figure 3.
3. Remove the six screws (ST3.0X8.0) ③ that secure the control panel using a screwdriver, shown as
Figure 4.
4. Gently press and remove the RJ45 port ④ from the front panel, then pull out the speaker cable to
remove the controller PCB, shown as Figure 4.
5. Install the control panel as reverse steps.
Figure 3
Removing and Installing the Rear
Figure 4
Plate
1. Pull out the ATO fuse ①, shown as Figure 5.
2. Press the spring latch ② located on the two edges of the DC socket, and push the DC socket into
the housing to separate the socket from the rear plate③, shown as Figure 5.
3. Remove the seven screws (M3.0X6.0) ④ that secure the rear plate using a screwdriver, shown as
Figure 5.
4. Remove the two RF cables of both radios, and connecting cable of the fan, then remove the 3 power
jumper cables that connecting AC socket with switch power, using a screwdriver, and that’s all for
you to get prepared to remove the rear plate.
5. Installing the rear plate as the reverse steps.
-38-
TR-800 Service Manual
Figure 5
Removing and Installing the Radio
1. Remove the screw (M4.0X6.0) ① that secure the thermistor sensor using a screwdriver, shown as
Figure 6.
2. Remove the eight screws (M3.0X6.0) ② that secure the bracket of radio using a screwdriver, shown
as Figure 6.
3. Remove the bracket ③ shown as Figure 6, and remove the 2 signal cables and 2 power cables of
both radios.
4. Remove the eight screws (M4.0X6.0) ④ that secure both radios using a screwdriver, and then
remove both radios ⑤, shown as Figure 7.
5. Install both radios as the reverse steps.
Figure 6
Figure 7
Removing and Installing Housing
1. Remove the six screws (M3.0X6.0) that secure the housing using a screwdriver, to remove the
housing ①, shown as Figure 8.
2. Install the housing as the reverse steps.
-39-
TR-800 Service Manual
Figure 8
Removing and Installing Switch Power
1. Remove the four screws (M4.0X6.0) that secure the switch power using a screwdriver, to remove the
switch power ①, shown as Figure 9.
2. Install the switch power as the reverse steps.
Figure 9
Removing and Installing the Power Management PCB
1. Remove the four screws (M3.0X6.0) that secure the power management PCB using a screwdriver,
to remove the power management PCB ①, shown as Figure 10.
2. Install the power management PCB as the reverse steps.
Figure 10
-40-
TR-800 Service Manual
„ Exploded View
27
28
29
30
31
32
33
34
35
10
13 14
11 12
15 16
17 18
36
CC
38
39
19
49
50
51
20
21
25
44
45
48
23
43
47
40
41
42
46
CC
BB
37
22
24
55
56
26
52
53
54
65
64
63
62
61
60 59
58
57
-41-

---

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