Kirisun PT8100 Service Manual
PT8100 Service Manual
Dangerous!
Do not connect the AC power or DC power over 18V with
any connector or terminal of the radio. Otherwise it will cause
fire, electric shock or damage to the radio.
Warning!
Do not reverse power connection.
Do not turn on the radio before the antenna or load
connection is completed.
Do not touch the antenna while the radio is transmitting,
otherwise, it may cause light burning on skin.
The radio is not waterproof, so it's better to avoid putting it
in rain or snow, or any other liquid to ensure its life and
performance.
Statement!
Kirisun Electronics (Shenzhen) Co., Ltd owns the
copyright of KSP8100 software.
Unauthorized Duplication of KSP8100 software is strictly
prohibited.
Kirisun Electronics (Shenzhen) Co., Ltd owns the
copyright of the MCU software.
Kirisun Electronics (Shenzhen) Co., Ltd owns the
copyright of the radio outward appearance/structure/circuit
design.
Kirisun Electronics (Shenzhen) Co., Ltd owns the
copyright of this service manual. Unauthorized publication is
prohibited.
Kirisun Electronics (Shenzhen) Co., Ltd owns the
trademarks “KIRISUN”, “
立讯”.
”, “ ”, and “科
Contents
Chapter 1 Overview ...............................................................................1
Chapter 2 Unpacking and Checking....................................................... 1
Chapter 3 External View and Functional Keys....................................... 2
Chapter 4 Circuit Description................................................................. 4
Chapter 5 Mode Introduction .................................................................9
Chapter 6 Disassembly and Assembly for Maintenance.......................10
Chapter 7 Adjustment........................................................................... 12
Chapter 8 Specifications....................................................................... 16
Chapter 9 Troubleshooting ................................................................... 16
Appendix 1 Abbreviations.................................................................... 17
Appendix 2 Electronic Parts List.......................................................... 17
Appendix 3 Structural Parts List .......................................................... 22
Appendix 4 Accessories .......................................................................22
Figure 1 PT8100 Block Diagram..........................................................23
Figure 2 PT8100 Main Board Schematic Circuit Diagram...................24
Figure 3 PT8100 Main Board Top Layer Position Mark Diagram ....... 25
Figure 4 PT8100 Main Board Top Layer Position Value Diagram....... 26
Figure 5 PT8100 Main Board Bottom Layer Position Mark Diagram..27
Figure 6 PT8100 Main Board Bottom Layer Position Value Diagram .28
Figure 7 PT8100 Key Board Schematic Circuit Diagram .................... 29
Figure 8 PT8100 Key Board Top Layer Position Mark Diagram......... 30
Figure 9 PT8100 Key Board Top Layer Position Value Diagram......... 31
Figure 10 PT8100 Key Board Bottom Layer Position Mark Diagram .32
Figure 11 PT8100 Key Board Bottom Layer Position Value Diagram . 33
PT8100 Service Manual
Chapter 1 Overview
1.1 Introduction
This manual applies to the service and maintenance of
PT8100 mobile radios, and is intended for use by engineers and
professional technicians that have been trained by Kirisun. It
contains all required service information for the equipment.
Kirisun reserves the right to modify the product structure and
specifications without notice in order to enhance product
performance and quality. You can also log on our website
www.kirisun.com
contact your local dealer or us.
Please read this manual before repairing the product.
1.2 Service Attentions
* Safety
Do not touch the antenna connector while repairing the radio.
Do not reverse the battery polarity.
Do not turn on the radio before the antenna or load
connection is completed.
Do not touch the antenna while the mobile radio is
transmitting, otherwise, it may cause light burning on skin.
* Explosive Atmosphere
It’s prohibited to use or repair the radio in the following
places:
Hospital, health center, airport
Any area with a potentially explosive atmosphere (e.g. orlop
deck of the ship, storage or transportation equipment for fuel and
chemical etc.)
Any place near blasting sites or area with electrical blasting
cap.
* Replacement Parts
All components used for repair should be supplied by
Kirisun.
Components of the same type available on the market are not
surely able to be used in this product and we do not guarantee the
quality of the product using such components.
If you want to apply for any component from Kirisun, please
fill in an application form as below.
e.g.
Component Application Form
Radio
Model
PT8100-01 FET Q18 3SK318 105-3SK318-R01 1
PT8100-01 Triode Q5 2SC3357 104-SC3357-R01 1
to download the latest service manual or
Component
Position
Mark
Model/
Specifications
Part No. Qty
1.3 Service
All the Kirisun products are subject to the service warranty.
After-sales service will be provided, and the length of
warranty is stated by Kirisun. The radio and its accessories are all
in the warranty. However, in one of the following cases, charge
free service will be not available.
* No valid warranty card or original invoice.
* Malfunction caused by disassembling, repairing or
reconstructing the radio by the users without permission.
* Wear and tear or any man-made damage such as mechanical
damage, burning or water leaking.
* Product’s serial number has been damaged or the product
trademark is difficult to identify.
After the warranty expires, lifetime service is still available.
We also provide service components to service stations and staffs.
Chapter 2 Unpacking and Checking
2.1 Unpacking and Checking
Unpack the radio carefully. We recommend that you check
the radio and the supplied accessories listed in the following table
before discarding the packing material. If any damage or loss has
occurred during shipment, please contact the dealer without
delay.
No. Item Qty
1 Mounting Bracket 1
2 Power Cable 1
3 Hand Microphone 1
4 Microphone Hanger 1
5 M4*10 SEMS Screw 4
6 M4*16 Self-tapping Screw 2
7 M5*16 Self-tapping Screw 4
8 Instruction Manual 1
Mounting Bracket
Microphone Hanger
1
Power Cable Hand Microphone
M4*10 SEMS Screw
M5*16 / M4*16
Self-tapping Screw
PT8100 Service Manual
2.2 Licenses
It is requested by rules that each radio installation site (for
mobile station or base station) should be provided with a license.
The license carrier should guarantee that the Tx power, frequency
and deviation comply with the license requirements.
Transmission adjustment can only be conducted by
license-authorized technicians. Installation or operation of the
radio does not need a license.
2.3 Check before Installation
Every radio has been adjusted and checked before shipment.
Before installation, it’s better to check if the radio’s
transmission and receiving are normal to make sure its proper
operation.
The test should be performed with all cables and accessories
correctly connected.
Tx frequency, deviation, and power output should be checked,
as should Rx sensitivity, squelch, audio output, and signaling
operation.
2.4 Installation
1) Preparation
Check the vehicle and decide how and where to install the
radio antenna and accessories. Make sure that the cable will not
be extruded. And pay attention to the heat dissipation of the radio
to avoid overheating.
2) Antenna
The best position for the antenna is in the center of an open
and flat conduction region, usually the center of the vehicle roof
or the cover of the luggage trunk. Connect one end of the earth
wire to the cover of the luggage trunk and the other end to the car
outer shell so that the cover of the luggage trunk is grounded.
3) Connection of Power Cable
* First of all, please check whether there is a hole for the power
cable on the insulating board. If no, please bore the board with a
suitable drill bit and fix a rubber grommet on it to protect the
cable from abrasion.
* Afterwards, please pass the cable through the insulating board
and lead from the car into the engine room. Connect the red
conductor to the positive terminal of the accumulator and the
black conductor to the negative terminal.
* At last, ring the remained conductor and fix it.
Note: Please guarantee sufficient relaxation of the power
cable in the car so that the radio can be conveniently
disassembled, assembled, and repaired in the state of power
connection.
4) Installation
Warning: For passenger safety, please install the radio
securely using the supplied mounting bracket so that the
radio will not be loosened in case of collision.
* Take the mounting bracket as the sample to draw the position of
the four holes for screws. Then drill the holes on the instrument
panel, and then install the mounting bracket with 4 M5*16
self-tapping screws. (Note: Please install the radio at a position
convenient for operation, and leave enough space for connection
of the cable.)
* Slide the radio into the mounting bracket and fix it to the
bracket with 4 M4*10 SEMS screws (with flat washer and spring
washer). (Set an appropriate height and angle for the radio by
using different screw holes of the bracket.)
* Connect the antenna and the power cable to the radio.
* Install the microphone hanger at an appropriate position using 2
M4*16 self-tapping screws. (It should be made sure that the
microphone and its cable will not affect safe driving.)
* Connect the microphone to the MIC jack on the front panel of
the radio and put the microphone on the hanger.
Note: When replacing the fuse of the power cable, only use
fuses of the same type and rating; otherwise the radio could
be damaged.
5) Attention
If you have no plan to use external speaker, please cover the
speaker jack with the supplied rubber plug to prevent dust and
sand getting in.
Chapter 3 External View and Functional Keys
3.1 Front Panel
4
5
7
6
① Power Button
Press and hold this button (1.5 seconds or longer) to turn the
radio power ON or OFF.
② LED Indicator
Lights red while the radio is transmitting, lights green while
the radio is receiving.
Flashes orange while receiving DTMF, 2Tone or 5Tone
signals the same as the setting of the radio.
Flashes red while the radio is scanning (This function can be
2
2
3
8
1
9
PT8100 Service Manual
enabled/disabled by PC software).
③ LCD Display
Refer to “LCD Display Screen” for details.
④ Volume Knob
Adjust volume of the mobile radio.
⑤ MIC Jack/Programming Interface
⑥ P1 Button (Programmable Button)
⑦ P2 Button (Programmable Button)
⑧ P3 Button (Programmable Button)
⑨
3.2 Microphone
⑩ PTT Button (on the hand microphone)
microphone, your voice can be transmitted to the recipient.
Release PTT to receive.
3.3 LCD Display Screen
Display Description
P2 Appears when the radio is in OST state.
3.4 Rear Panel
① Antenna Connector
/ Button (Programmable Button)
⑩
Press and hold the PTT button, then speak into the
Shows the strength of the received signals; 4 bars
indicates the strongest signal.
Shows the transmitting power level of the radio:
‘L’ indicates low Tx power level;
‘M’ indicates middle Tx power level;
‘H’ indicates high Tx power level.
Appears when the radio receives a Sel Call/Call Alert.
Appears when the radio is in “Monitor” state.
Appears when the radio is scanning.
Function not used.
Appears when the radio is in talk-around mode.
Function not used.
①②③
② Power Terminal
③ External Speaker Jack
3.5 Auxiliary Functions for Programmable Buttons
The following auxiliary functions can be assigned to
/ ，P1，P2，P3 buttons by the distributor.
No. Function Description
0 None No function is assigned.
1 Channel Up Select the next channel.
2 Channel Down Select the previous channel.
3 Zone Up Select the next zone.
4 Zone Down Select the previous zone.
5 Display CH
Frequency
6 Display CH
Alias
7 Display Mode
Switch
8 OST This allows the radio user to change the QT/DQT setting
9 Power Level This allows the radio user to adjust the transmit power
10 Squelch Level Press the button to enter “Squelch Level Adjustment
11 Key Lock Press to lock/unlock some keys.
12 Scan Press to start/stop scanning.
13 FCS Press to start free channel scanning (FCS).
14 Nuisance Delete
(temporarily)
15 Public Address Press to enable the public address function. When press
16 Home Channel Press the button to switch to the preset home channel. If
17 Talk Around Press the button to toggle between Repeater Mode and
Press the button, frequency of the current channel will be
shown on the LCD.
Press the button, alias of the current channel will be
shown on the LCD.
Press the button to switch the display mode between
“Channel No.”, “Channel Alias”, “Zone No.”, “Zone
Alias”, and “Channel Frequency”.
of current channel by pre-programmed OST list.
setting to “High”, “Mid” or “Low”. Meanwhile, the LCD
will display “H”, “M”, “L” respectively.
Mode”, then the user can adjust the squelch level by
pressing / . Press P3 button to save the
selected squelch level and the radio then quits this mode.
When the radio lands on an unwanted channel during
scanning, press the button to delete this channel
temporarily. When exit scan mode and enter it again, the
channel will be added to the scan list again.
and hold the PTT key and speak to the microphone, your
voice will be heard by yourself and surround people
through the external speaker, but will not be transmitted.
Press this button again to disable the public address
function, and the radio returns to user mode.
the radio has set two home channels, it will switch to
home channel 1 upon pressing this button, and will switch
to home channel 2 if you press this button again within 2
seconds, and will switch to the original channel if you
press this button for the third time within 2 seconds.
When switching to the home channel, the zone is also
switched. If the radio has only set one home channel, the
radio will switch between the working channel and the
home channel upon pressing this button within 2 seconds.
If the interval between two pressings is longer than 2
seconds, the radio will always switch to home channel 1.
Talkaround Mode. In Talkaround Mode, the Rx
parameters are used in place of the Tx parameters when
transmitting.
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PT8100 Service Manual
18 Momentary
Monitor / Call
Cancel
19 Monitor/Call
Cancel
20 Momentary
Squelch Off /
Call Cancel
21 Squelch
Off/Call Cancel
22 Emergency Press the button to make an alarm tone according to the
23 Call 1 Press to send the preset code.
24 Call 2 Press to send the preset code.
25 Call 3 Press to send the preset code.
26 Call 4 Press to send the preset code.
27 Menu
Select/Enter
28 Lone Worker Press to enable/disable Lone Worker function.
29 Scan List Edit This allows the radio-user to edit a Scan List. Scan List
30 Backlight Press to toggle between “Light”, “Dark” and “Auto” for
Chapter 4 Circuit Description
4.1 Frequency Configuration
ANT
ANT SW RF AMP
The receiver adopts double mixing. The first IF is 49.95MHz
and the second IF is 450kHz.
The first local oscillator signal of the receiver is generated by
the frequency synthesizer and the second local oscillator signal is
generated by frequency tripler X1.
The transmitter signal is produced by the frequency
synthesizer.
The reference frequency of the frequency synthesizer is
Press and hold the button, QT/DQT/2Tone/5Tone/DTMF
signaling will be closed. Release the button to return to
normal operation. Press the button during the Select Call
state, the radio will exit Select Call state.
Press the button to close QT/DQT/2Tone/5Tone/DTMF
signaling, then you can receive signals that cannot be
received during normal operation. Press the button again
to resume normal operation. Press the button during the
Select Call state, the radio will exit Select Call state.
Press and hold the button to open squelch; release it to
resume normal operation.
Press it during the Select Call state, the radio will exit
Select Call state.
Press the button to open squelch; press it again to resume
normal operation.
setting of the programming software or send your ID or
background sound to your partner or the system.
Press to enter the Menu Mode, to make menu selections
and save.
editing is only available for Scan Lists where the User
Programmable field has been enabled.
the backlight.
CF2
450KHz F
CF1
450KHz H
MCF
49.95MHz
RX
TX
16.8MHz
IF SYSTEM
TCXO
X3 multiply
AF AMP
MIC AMPPLL VCOTX AMPPA AMP
Figure 4.1 Frequency Configuration
provided by TCXO.
4.2 Principle of Receiver (RX)
CF2
49.95MHz
450KHz F
CF1
450KHz H
MCF
IF SYSTEM
IC4
TCXO
X3 multiply
16.8MHz
NJM2902
IC9 TDA1519C
IC9
AF AMP
ANT
D3 D11
ANT SW
IC11
MCU
Q18
BPF
RF AMP
Q19
BPF
1st Local OSC
Figure 4.2 Principle of Receiver
Front end
The signal coming from the antenna passes through the
RX/TX switch circuit (D3 and D37), and passes through a BPF
consists of two LCs to remove unwanted out-of-band signals, and
then is routed to the low noise amplifier (LNA) consists of Q18
and its peripheral components where it is amplified.
Output signal from the LNA passes through a BPF consists of
three LCs to further remove unwanted out-of-band signal, and
then goes to the first mixer (Q19).
AGC circuit
AGC circuit, which consists of Q16 and its peripheral circuit,
will work to reduce the gain of Q18 only when the input signal is
too large.
First mixer
The Rx signal from LNA is mixed with the first local
oscillator signal from the frequency synthesizer to produce the
first IF signal (49.95MHz).
IF circuit
The first IF signal passes through the crystal filter (XF1) to
remove the adjacent channel signal and signal outside the
adjacent channel. Then the filtered signal is amplified by the first
IF amplifier (Q20), and is sent to the IF processing IC (IC6,
TA31136).
IF IC consists of the second mixer, IF amplifier, limiter,
discriminator, noise amplifier, and audio low pass filter.
Signal (16.8MHz) from X1 is multiple-amplified by Q11 and
its peripheral circuit to produce the second local oscillator signal.
Then the second local oscillator signal (50.4MHz) is mixed with
the first IF signal (49.95MHz) in IC6 to generate the second IF
signal (450kHz). And then the second IF signal is amplified and
limited in IC6, filtered by its ceramic filter (CF1 or CF2,
450kHz), and then demodulated in IC6. After that, the
demodulated signal is routed to the audio circuit to output audio
signal.
The selection circuit of the second IF filter consists of CF1,
CF2, D20, D21, and the peripheral circuit. When the mobile radio
is set to wideband, CF2 is put through and takes effect, while
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PT8100 Service Manual
CF1 is cut off; when the mobile radio is set to narrowband, CF1
is put through and takes effect, while CF2 is cut off.
Squelch circuit
The demodulated signal from IC6 is sent to the internal noise
amplifier in IC6. Then the resulting signal is further amplified in
Q21 and demodulated in D25, and then the resulting DC level is
sent to the MCU squelch control circuit. This voltage is in inverse
proportion to the input signal.
4.3 Principle of Transmitter (TX)
TX power amplification
8T 8R
VCO
TX/RX SW
Q5
Q4
PRE
RF AMP
DRIVE
8T
8T
Figure 4.3 Principle of Power Amplifier and Antenna Switch
The modulated RF signal from VCO is amplified by Q1, Q2,
Q4, and Q5, and is sent to IC1 for power amplification. Output
power of IC1: 25W.
Grid bias of IC1 is controlled by the APC circuit. Through
changing the grid bias voltage, the Tx output power can be
controlled conveniently.
APC（Automatic Power Control）circuit
D9 and D10 are RF detector diodes. The output power of the
RF amplifier is detected by RF detector diodes and converted into
DC level. Then the DC level is compared with the signal from
MCU and amplified in IC4, and is sent to grid in IC1 to control
the power output.
If the Tx output power is too high, the voltage detected by the
detector diodes will increase; IC4 output voltage will decrease, so
the bias voltage imposed on IC1 will also decrease, which causes
the Tx output power to be lowered, and vice versa. Thus, the Tx
output power can keep stable under different working conditions.
MCU can set the power through changing the voltage input to
IC4.
4.4 Principle of Frequency Synthesizer
BUFF
UL
IC3
CK
QT TCXO
PLL IC
MB15E03SL
DT
UL
X1
TCXO
16.8MHz
3.5V
*3 2ND LOCAL AMP
Q11
8R
LOOP FILTER
5V
Figure 4.4 Frequency Synthesizer
PT8100 adopts PLL type frequency synthesizer.
IC1
RA30H
13.8V
Q7
5V
Q6
TX
VCO
Q14
RX
VCO
Q14
RIPPLE
FILTER
ANT SW
8T
Q1 Q2
RF AMP
BUFF
MOD
5V
2ND LOCAL
LPF
IC4
APC CONTROL
TO ANT
APC
VCO OUT
The frequency synthesizer consists of reference oscillator,
voltage control oscillator (VCO), programmable divider, phase
comparator, and low pass filter (LPF).
Tx VCO unit consists of Q6, D1, D4, D5, and D6. D8 is the
modulation circuit of Tx VCO.
Rx VCO unit consists of Q12, D14, D16, D17 and D18.
IC3 (MB15E03SL) is the PLL integrated circuit, which
consists of programmable reference divider, programmable
divider, phase comparator, and charge pump.
The low pass filter consists of R54 and C113.
The reference frequency is provided by X1 (TCXO,
16.8MHz).
Reference frequency from TCXO (Temperature-Controlled
Crystal Oscillator) is divided by the programmable reference
divider in IC3 to produce reference frequency of 5kHz or
6.25kHz (determined by the preset channel frequency and is
controlled by MCU).
The oscillation frequency from VCO goes to IC3 where it is
divided by the programmable divider and is then compared with
the reference frequency to obtain the error signal. The signal is
then filtered by a low pass filter and is sent to VCO to change the
oscillation frequency of the VCO, enabling the frequency to
reach the set value. Then the VCO is locked.
Unlock detection: When PLL is unlocked, pin14 of IC3 will
output low level signal to MCU. Then MCU prohibits the Tx
from transmitting and makes an alert tone.
4.5 Audio Processing Circuit
Figure 4.5 Audio Processing
MIC signal processing:
Voice signal from MIC is sent to IC13A for amplification
(IC13A, D32, Q32 and other components form the AGC circuit to
improve the dynamic range of the circuit). Then the resulting
signal is pre-emphasized by C322 and R267 and goes to the IDC
circuit consists of IC13B. After being limited, the signal is
switched into wideband or narrowband in Q30 and then passes
through the low pass circuit consists of IC13C and IC13D to
remove signals above 3000Hz. Then the filtered signal is sent to
VR2 to adjust the deviation and modulated by D8, and then is
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PT8100 Service Manual
sent to Tx VCO.
Rx audio signal processing:
Voice signal from IC6 is divided into two parts. One branch
of the signal is routed to the low pass circuit consists of IC8,
where it is amplified and filtered (to remove the voice signal) to
obtain more purified CTCSS/DCS signal, which is then sent to
MCU for processing. The other branch of the signal goes to IC9.
After being amplified by IC9C (Q29 is the gain switching circuit
which is used to switch volume between wideband and
narrowband), the signal is divided into two branches again. One
branch is sent to the 2-tone (5-tone) shaping circuit consists of
Q8, Q52 and IC10, where it is shaped into better square wave
signal, and then is sent to MCU to judge the 2-tone (5-tone)
signal; the other branch passes through the high pass circuit
consists of IC9D to remove the sub-audio signal and passes
through the de-emphasis circuit consists of R173 and C245. Then
the de-emphasized signal is passed through the low pass circuit
consists of IC9A and IC9B and the high pass circuit consists of
Q26. After that, the resulting signal goes to the volume switch
where the signal volume will be adjusted. After being amplified
in IC7, the signal will be output to drive the speaker.
Impedance of the speaker: 16
Note:
* None of the terminals of the speaker should be grounded.
* The emergency alarm sound has no volume limit.
4.6 Power Supply:
The radio uses 13.8V battery, and the Tx power amplification
circuit (IC1) and Rx audio power amplifier (IC7) directly adopt
the battery for power supply.
IC17: 3V, LDO, micropower regulator, which supplies power for
MCU, DTMF decoding unit etc.
IC16: 8V, LDO, micropower regulator.
Q38: 8T switch, which is controlled by MCU.
8T: Supplies power for front end of transmitter.
Q40: 8R switch, which is controlled by MCU.
8R: Supplies power for RF amplifier and mixer of the receiver.
4.7 MCU Unit
MCU unit controls the operation of each unit of the radio so
that all functions can be realized.
Communicate with external PC.
Access the status data of the radio.
Control the PLL to generate Rx and Tx local oscillator
frequencies.
Obtain status parameters of the working channel.
Control status of LED indicator.
Control power supply for each unit.
Check the actions of each functional key.
Generate CTCSS signal.
Generate DCS signal.
Generate power control signal.
Perform CTCSS decoding.
Perform DCS decoding.
Perform 2Tone (5Tone) decoding.
Test and control the squelch.
Control content of voice alert.
4.8 Memory (E
2
PROM, A T24C512)
The memory is stored with channel data, CTCSS/DCS data,
other data for function setting, and parameter adjusting data.
CTCSS/DCS signal encoding and decoding:
CTCSS/DCS signal (output from pin97, PWM wave)
generated by MCU is sent to TCXO for modulation; and the
CTCSS/DCS signal (output from pin98, PWM wave) is sent to
VCO modulation.
CTCSS/DCS signal from the receiver is sent to MCU for
decoding. MCU checks if the CTCSS/DCS signal in the receiving
signal matches the preset value of the radio, and determines
whether to open the speaker or not.
CTCSS
CTCSS (Continuous Tone Control Squelch System) is a
squelch control system which is modulated on carrier and is
guided by a continuous sub-audio signal. If CTCSS is set, the
communication between the transmitting and receiving radios can
be realized only when the two radios have set the same CTCSS
frequency. In doing this, disturbance from other signals can be
avoided.
PT8100 has 39 groups of standard CTCSS frequencies for
your selection. See Table 4.1.
CTCSS signal (PWM wave) is generated by MCU, and is
passed through low pass filter consists of RC to remove the high
frequency components (above 300Hz). Then the resulting signal
is routed to VCO for modulation.
Table 4.1 CTCSS Frequencies
No. Frequency
1 67.0 11 94.8 21 131.8 31 186.2
2 69.3 12 97.4 22 136.5 32 192.8
3 71.9 13 100.0 23 141.3 33 203.5
[Hz]
No. Frequency
[Hz]
No. Frequency
[Hz]
No. Frequency
6
[Hz]
PT8100 Service Manual
4 74.4 14 103.5 24 146.2 34 210.7
5 77.0 15 107.2 25 151.4 35 218.1
6 79.7 16 110.9 26 156.7 36 225.7
7 82.5 17 114.8 27 162.2 37 233.6
8 85.4 18 118.8 28 167.9 38 241.8
9 88.5 19 123.0 29 173.8 39 250.3
10 91.5 20 127.3 30 179.9
DCS
DCS (Digital Code Squelch), which is used to control squelch,
is a series of continuous digital codes modulated on carrier
together with voice signal. If DCS is set, the speaker can be
opened only when the radio receives signal with the same DCS to
avoid disturbance of unwanted signals.
PT8100 has 83 standard codes (inverted and non-inverted) for
your selection. See Table 4.2.
DCS signal (PWM wave) is produced by MCU. It passes
through the low pass filter consists of RC to remove the high
frequency components (above 300Hz). Then the resulting signal
is sent to VCO and TCXO for modulation, with HF components
of the DCS signal being modulated by VCO, and the LF
components of the DCS signal being modulated by TCXO.
The DCS signal coming from the receiver is routed to MCU
for decoding. MCU checks if the DCS code in the received signal
matches the preset DCS of the radio, and determines whether to
open the speaker or not.
Table 4.2 DCS Codes
023 114 174 315 445 631
025 115 205 331 464 632
026 116 223 343 465 654
031 125 226 346 466 662
032 131 243 351 503 664
043 132 244 364 506 703
047 134 245 365 516 712
051 143 251 371 532 723
054 152 261 411 546 731
065 155 263 412 565 732
071 156 265 413 606 734
072 162 271 423 612 743
073 165 306 431 624 754
074 172 311 432 627
4.9 Semiconductor Data
MCU Description
Table 4.3 Port Description of MCU (MB90F882)
No. Port name
1 GLED P40 O Rx Green Indicator H: on
2NC
3 NC - -
4 NC - -
5 P5 P32 I P5 Button Input
6 P1 P33 I P1 Button Input
7 P2 P34 I P2 Button Input
8 P3 P35 I P3 Button Input
9 P4 P36 I P4 Button Input
10 POWER P37 I Power Button Input
11 N C
12 NC
11 NC - -
12 NC - -
13 VCC VCC - CPU Power Input
14 VSS VSS - GND
15 C C -
16 LCD RST P42 O LCD Reset Control
17 LCD BLC P43 O LCD Backlight Control
18 LCD DAT P44 I/O LCD Serial Data Input/Output
19 LCD WR P45 O LCD Write Clock Output
20 LCD RD P46 O LCD Read Clock Output
21 LCD CS P47 O LCD Chip Selection Signal Output
22 MICDAT P90 I
23 HOOK P91 I Hook Signal Input
24 DEV2 P92 O Max. Deviation Compensation
25 DEV1 P93 O
26 UL P94 I
27 CK P95 O PLL Clock Output
28 LE P96 O PLL IC Enable Pin
29 DT P97 O PLL Data Output
30 AVCC AVCC - Connect with VCC
31 AVRH AVRH - Connect with VCC
32 NC - -
33 AVSS AVSS - Connect with VSS
34 QT/DQT IN AN0 I（A/D0） QT/DQT Signal Input
35 RSSI AN1 I（A/D1） Signal Strength Input
36 BUSY AN2 I（A/D2） Busy Signal Input
37 TEMP AN3 I（A/D3） Power Amplifier Temperature Protection Input
38 NC - -
39 NC - -
40 NC - -
41 NC - -
42 VSS VSS - GND
43 DTMFD0 P71 I DTMF Detect Input
44 DTMFD1 P72 I DTMF Detect Input
45 DTMFD2 P73 I DTMF Detect Input
46 DTMFD3 P74 I DTMF Detect Input
47 RX P76 O
48 DTMFDV P75 I DTMF Decoding Valid Input
49 MD2 MD2 - Programming Test Point
50 MD1 MD1 - Programming Test Point
51 MD0 MD0 - Programming Test Point
52 RESET RST I Programming Test Point
53 SCL UI6 O E2PROM Clock Line
54 SDA UO6 I/O
55 TEST P82 O L：Writable
56 NC
57 RXD P84 I RS－232 Input, Programming Test Point
58 TXD P85 O RS－232 Output, Programming Test Point
59 NC - -
60 NC - -
61 NC - -
Pin
Name
I/O Function
Reserved: Hand MIC Digital Keypad Data
Input
PLL Unlock Detect Pin
H：Locked，L：Unlocked
TX/RX VCO Selection
H: TX， L: RX
7
PT8100 Service Manual
62 INT IRQ20 I Power Detect Input
63 DVCC DVCC -
64 DVSS DVSS -
65 8TC PA2 O Tx Power Control H：On
66 8RC PA3 O Rx Power Control H：On
67 SBC P50 O Main Power Switch Control H: on
68 TXGSW P51 O Tx Gate Control L: Tx
69 PA P52 O Public Address Control H: PA
70 AF_MUTE P53 O Mute Control L: AF Mute
71 NC - -
72 NC - -
73 DTMF PPG6 O(PWM) DTMF/2T/5T/Beep Output
74 VCCN PPG7 O(PWM) Frequency Voltage Regulation Output VCCN
75 P00 P00 High Level Programming Test Point
76 P01 P01 Low Level Programming Test Point
77 MIC_MUTE P02 O Mute Control H: MIC Mute
78 AFCO P03 O
79 NC - -
80 NC - -
81 NC - -
82 PTT P07 I PTT Button Input
83 IGN P10 I Reserved: Ignition Switch Detect Input
84 EXT-ALARM P11 I Reserved: External Alarm Input
85 MAXAF P12 O
86 NC - -
87 NC - -
88 VCC VCC - CPU Power Input
89 VSS VSS - GND
90 X1 X1 - Oscillator
91 X0 X0 - Oscillator
92 SHIFT P15 O
93 W/N P16 O
94 W/N P17 O
95 APC PPG0 O(PWM) TX: Automatic Power Control Output
96 TV PPG1 O(PWM) RX:BPF Tuning Output
97 DCSTCXO PPG2 O(PWM) CTCSS/DCS Output to TCXO
98 DCSVCO PPG3 O(PWM) CTCSS/DCS Output to VCO
99 TONEIN TIO1 I 2T/5T Signal Input
100 RLED P25 O Tx Red Indicator H：Light
Table 4.4 Function Description of Semiconductor Components
Position
Mark
IC5 HT9172 DTMF decoder chip
IC14 PST9140NR MCU reset circuit
IC13 NJM2902V MIC amplification, limitation, filtering
IC3 MB15E03SL Frequency synthesizer
IC4 NJM2904 APC, Voltage comparison, driving
IC6 TA31136
IC9 NJM2902 Rx demodulated signal amplification and filtering
IC8 NJM2902 Rx CTCSS/DCS signal amplification and filtering
IC11 MB90F882 MCU
IC12 AT24C512
IC7 TDA7297D Rx AF power amplification
IC1 RA30H1317M Tx final power amplification
Model Function Description
Rx 2
limitation, demodulation, and noise amplification
E2PROM, memorizes channel frequency data,
function setting parameters, and adjusting status
parameters
AF Power Amplifier Control
L: Power Amplifier On
Max. Alarm Volume Control Switch
H: Controlled by Volume Switch
L: Max Volume at Emergency Alarm
Clock Beat Shift
H：On
Wideband/Narrowband Control
H：Narrowband L：Wideband (Reserved)
Wideband/Narrowband Control
H：Wideband L：Narrowband
nd
local oscillation, 2nd IF amplification,
IC17 TA78033AF 3V voltage regulation output
IC16 L7808CV 8V voltage regulation output
IC18 NJM78L05UA 5V voltage regulation output
IC19 UPB1509GV Frequency divider
Q9 DTC144EE APC control switch
Q12 2SK508NV Rx VCO oscillation circuit
Q14 2SC4617 VCO power filter
Q11 2SC5108 Rx 2
nd
local oscillation frequency multiplier circuit
Q16 2SK1829 Rx high power amplifier gain control switch
Q18 3SK318 Rx high power amplifier
Q19 3SK318 First mixer
Q1 2SC5108 VCO buffer amplifier
Q20 2SC5108 1st IF amplifier
Q21 2SC4617 Rx noise amplifier
Q22 DTC144EE Wideband/narrowband noise toggle switch
Q23 DTA144EE
Rx wideband/narrowband frequency discrimination
toggle switch
Q29 DTA144EE Rx wideband/narrowband toggle switch
Q30 2SK1824 Tx wideband/narrowband toggle switch
Q27 DTC144EE Beat shift control switch
Q33 2SK1824 Rx AF mute switch
Q45 2SK1824 Rx AF output switch, disconnect on emergency
Q28 DTC144EE AF power amplification control switch
Q35 DTA144EE Power switch of MIC amplification unit
Q40 KTA1298 8R switch
Q1 2SC5108 VCO buffer amplifier
Q38 KTA1298 8T switch
Q32 2SC4919 MIC AGC control switch
Q4 2SC3357 Tx 1st amplifier
Q5 2SC3357 Tx 2nd amplifier
Q46 2SK1824 Rx AF output switch, put through on emergency
Q6 2SK508NV Tx VCO oscillation circuit
Q3 2SC4116 Tx VCO control switch
Q7 2SC5108 VCO buffer amplifier
Q13 2SC4116 Rx VCO control switch
Q53 2SK1824 Speaker/PA toggle switch
Q54 2SK1824 Speaker/PA toggle switch
Table 4.5 Function Description of Diodes
Position Mark Model Function Description
D3, D37 L709CE Transmitter antenna switch diode
D12 MA2S111 Unlock detect diode
D14, D16, D17,
HVC376 Rx VCO oscillation varactor diode
D18
D7 HZU5ALL APC output voltage limiting diode
D2, D19 HSC277 VCO output switch
D20, D21 DAN222 Rx 2nd IF filter wideband/narrowband toggle
switch
D23 HVC355B Rx BPF varactor diode
D25 MA742 Noise demodulation
D27, D28, D30,
HVC376B Rx BPF varactor diode
D29
D32 1SS372 MIC AGC detect diode
D1, D4, D5, D6 HVC376 Tx VCO oscillation varactor diode
D8 1SV278 Tx VCO modulation diode
Table 4.6：Features of Crystal Filter XF1
Item Rated Value
Nominal center frequency 49.95MHz
Passband width ±7.5kHz or higher
8
PT8100 Service Manual
40dB stop bandwidth ±20.0kHz or lower
Pulse 1.0dB or lower
Insertion loss 3.0dB or lower
Guarantee attenuation 80dB or higher
Terminal impedance 330
Table 4.7 Features of CF1 LTWC450H
Item Rated Value
Nominal center frequency 450kHz
6dB band width ±3.0kHz or higher
50dB band width ±9.5kHz or lower
Pulse 2.0dB or lower
Insertion loss 6.0dB or lower
Guarantee attenuation 47.0dB or higher
Terminal impedance 1.5k
Table 4.8 Features of CF1 LTWC450F
Item Rated Value
Nominal center frequency 450kHz
6dB band width ±6.0kHz or higher
50dB band width ±12.5kHz or lower
Pulse 2.0dB or lower
Insertion loss 6.0dB or lower
Guarantee attenuation 47.0dB or higher
Terminal impedance 1.5k
Chapter 5 Mode Introduction
Mode Introduction
Mode Function How to enter
User Mode For normal use Power ON
Data
Programming
Mode
PC
Mode
PC Test Mode
Firmware
Programming
Mode
Wired Clone Mode
Firmware Version Display
Mode
5.1 Data Programming Mode
The radio has been set before leaving the factory. However,
due to different requirements of users, the radio’s operating
frequency, channels, CTCSS/DCS, auto scan, and other
functional parameters should be reprogrammed. Therefore,
Kirisun has specially designed a set of Chinese/English
programming software KSP8100 with friendly interface,
Used to read and write
frequency data and
other features to and
from the radio
Tune the radio
parameters by PC
Upgrade the radio
when new features are
released
Used to transfer
programming data
from one radio to
another
Display firmware
version
Received commands
from PC. See below for
further information.
Received commands
from PC. See below for
further information.
Received commands
from PC. See below for
further information.
Press and hold P1 and P2
for over 2 seconds while
turning the radio power
ON
Press and hold
while turning the radio
power on to see the
firmware version; release
the button to enter user
mode
convenient operation and visualized display for setting functional
parameters of the radio.
Steps for setting the functional parameters of the radio by PC
are as follows:
A. Install KSP8100 on the PC.
B. Connect the mobile radio to the serial port of the PC with
the special programming cable. Refer to the figure below.
PC
(RS232 Serial Port)
Programming
Cable
Radio (MIC/Programming
Interface)
Figure 5.1
C. Turn the computer power ON.
D. Turn the radio power ON.
E. Run the KSP8100 programming software by double
clicking on its executive program.
F. Click “Program” in the main menu of KSP8100, and click
“Read from radio” in the pull-down menu to read parameters of
the radio to the computer; click “Write to radio” in the pull-down
menu to write parameters in the computer to the radio.
G. The following parameters can be set by using KSP8100
according to requirements of the user:
1) Functions of programmable buttons
2) Alert tone
3) Optional functions
4) 2Tone/DTMF/5Tone signalling
5) TOT
6) Emergency alarm
7) Personal template
8) Scan/FCS/Vote functions
9) Channel information
Please refer to the “Help” document of KSP8100 for details.
Note:
1. Please turn the radio power off before connecting it to the PC.
2. While reading data from the mobile radio, the LED on the
radio lights red, and the PTT key should not be pressed; while
writing data to the mobile radio, the LED on the radio lights
green.
3. Please firstly read data of the radio and back up the data before
editing the parameters on KSP8100.
4. If the radio cannot function normally after being written in
with the edited data, please rewrite the backup data into the radio.
5. “Model Information” is important for the radio; users should
not modify it.
6. After the programming is finished, the mobile radio will restart
automatically and return to the user mode.
5.2 PC Test Mode
9
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