Hytera Tm-800 Guida

TM-800 UHF SERVICE MANUAL

143

Adjustment Description

The radio can be adjusted by PC programming software or by manual adjustment. Manual adjustment

procedure of TM800 is as follows. (Refer to “Test Mode” and “Adjustment mode” in the section Radio

Modes.)

Instrument:

Radio Communication Test Set 1 set

Scanner 1 set

20A/30V Power Supply 1 set

DigitalVoltmeter 1set

PowerMeter 1set

Signal Line (with dummy load) 1 pcs

Adjustment:

1. Download

● Connect the radio with PC by programming cable; Turn the radio on.

● Click “Download” on software interface;

● Select the desired program and click “Open”, download starts.

● Click “End” when download is completed.

● Turn the radio off and remove the programming cable.

2. Initialization

It’s necessary to set the frequency and initialize the radio before adjustment because there is no

needed information in FLASHROM when the radio is manufactured.

● Turn the power on while holding down [PF2], then press [PF3], [PF4] and [PF6] in sequence.

● The LED on control panel turns green from red, indicating that the initialization is completed.

3. Adjustment

Some items can be adjusted in conventional mode and the others in manual adjust mode.

● Turn the power on to enter conventional mode.

● Switch the power off and back on while holding down [PF6], the radio enters manual adjust mode.

The channel number is displayed on the LCD.

● Frequency list

TM-800 UHF SERVICE MANUAL

144

Model RX/TX 1 ( FC ) 2 (F L ) 3 (FH ) 4 5 6 7 8

RX(MHz) 155.15 136.15 173.85 145.55 164.55 155.00 155.20 155.40

（V）TX(MHz) 155.00 136.00 174.00 145.50 164.50 155.00 155.20 155.40

RX(MHz) 481.15 450.15 511.85 465.55 496.55 481.00 481.20 481.40

（U1）TX(MHz) 481.00 450.00 512.00 465.50 496.50 481.00 481.20 481.40

RX(MHz) 375.15 350.15 399.85 362.55 387.55 375.00 375.20 375.40

（U2）TX(MHz) 375.00 350.00 400.00 362.50 387.50 375.00 375.20 375.40

RX(MHz) 435.15 400.15 469.85 417.55 452.55 435.00 435.20 435.40

（U3）TX(MHz) 435.00 400.00 470.00 417.50 452.50 435.00 435.20 435.40

RX(MHz) 465.15 440.15 489.85 452.55 477.55 465.00 465.20 465.40

（U4）TX(MHz) 465.00 440.00 490.00 452.50 477.50 465.00 465.20 465.40

RX(MHz) 503.15 480.15 525.85 491.75 515.25 503.00 503.20 503.40

（U5）TX(MHz) 503.00 480.00 526.00 491.70 515.20 503.00 503.20 503.40

RX(MHz) 425.15 400.15 449.85 412.55 437.55 425.00 425.20 425.40

（U6）TX(MHz) 425.00 400.00 450.00 412.50 437.50 425.00 425.20 425.40

VCO

Measurement Adjustment

Item Condition Test Instrument Terminal Part Method

Specification /

Remarks

1. Power supply 1.Power supply

voltage DC13.6V

Note: 1. This radio may be installed in negative

ground electrical systems only. Reverse polarity

will cause the cable fuse to blow. Check the

vehicle ground polarity before installation to

prevent wasted time and effort.

2. If DC power is to be controlled by the vehicle ignition switch, a switching relay

should be used to switch the positive power lead. The vehicle ignition switch

then controls DC to the relay coil.

1.CH: TX HI 7.1V±0.1V

2. VCO lock voltage

(TX) 2.CH: TX LO

TC1

Check ＞1.8V

1.CH: RX HI 7.1V±0.1V

3. VCO lock voltage

(RX) 2.CH: RX LO

Digital Voltmeter CV

TC2

Check ＞1.8V

TM-800 UHF SERVICE MANUAL

145

Transmitter

Measurement Adjustment

Item Condition Test Instrument Terminal Part Method

Specification

/Remarks

4.TX

Frequency

Enter adjustment item

“1”, each Ch

corresponds to a

specific TX Freq

Radio

Communication

Test Set

ANT

djust software

settings

djust to Ch frequency Error <50Hz

High power:

PO=50±0.5W

I≤12.0A

Check High

power

Middle power:

PO=25±0.5W

I≤8.0A

Check

Middle

power

5.TX Power

Each Ch corresponds to

a specific TX Freq,

enter adjustment item

“2”, adjust H/M/L power

Radio

Communication

Test Set

Ammeter

ANT

djust software

setting (first

value is 220) and

VR101, press

[PF6] to save

and enters the

next item.

Low power:

PO=5±0.5W

I≤5.0A

Check Low

power

Check deviation at

CH L/C/H:

3.75±0.1KHz (W)

6. Max.

Deviation

1. Each Ch corresponds

to a specific TX Freq,

enter adjustment item

“3”, turn to CH (C),

CH(L), CH(H), CH(nC)

Radio

Communication

Test Set

FILTER:

0.05-15KHz

AF:1KHz

50mV

ANT

MIC Jack

djust software

settings, press

[PF6] to save

and enters the

next item

Check deviation at

CH L/C/H:

1.75±0.1KHz (N)

7. Modulation

Sensitivity

Check deviation:

2.6KHz-3.4KHz (W)

1.3KHz-1.7KHz (N)

Modulation

Distortion

1. Each Ch corresponds

to a specific TX Freq

Radio

Communication

Test Set

FILTER:

0.05-15KHz

AF:1KHz

7mV

ANT

MIC Jack

≤3%

Check

TM-800 UHF SERVICE MANUAL

146

9.CDCSS

Balance

Each Ch corresponds

to a specific TX Freq,

enter adjustment item

“4”

Radio

Communication

Test Set

FILTER

LPF: 300Hz

ANT

Change

CDCSS

settings with

Selector Knob

Check

waveform

10. CTCSS

Deviation

Each Ch corresponds

to a specific TX Freq,

enter adjustment item

“5”, adjust

67Hz/127.3Hz/254.1Hz

CTCSS

Radio

Communication

Test Set

FILTER

LPF: 300Hz

ANT

Change CTCSS

settings with

Selector Knob

djust deviation to

0.75KHz±0.10KHz (W)

0.37KHz±0.05KHz (N)

11. CDCSS

Deviation

Each Ch corresponds

to a specific TX Freq,

enter adjustment

item“6”

Radio

Communication

Test Set

FILTER

LPF: 300Hz

ANT

Change

CDCSS

settings with

Selector Knob

djust deviation to

0.75KHz±0.10KHz (W)

0.37KHz±0.05KHz (N)

12. DTMF

Deviation

Each Ch corresponds

to a specific TX Freq,

enter adjustment item

“7”

Radio

Communication

Test Set

FILTER

LPF: 3KHz

ANT

Change

DTMF

settings with

Selector Knob

3.0KHz±0.1KHz (W)

1.5KHz±0.1KHz (N)

13. MSK

Each Ch corresponds

to a specific TX Freq,

enter adjustment item

“8”

Radio

Communication

Test Set

FILTER

LPF: 3KHz

ANT

Change MSK

settings with

Selector Knob

3.0KHz±0.1KHz (W)

1.5KHz±0.1KHz (N)

14. 2-TONE/

5-TONE

Each Ch corresponds

to a specific TX Freq,

enter adjustment item

“9”

Radio

Communication

Test Set

FILTER

LPF: 3KHz

ANT

Change 2-tone/

5-tone settings

with Selector

Knob

djust deviation to

3.0KHz±0.10KHz (W)

1.5KHz±0.1KHz (N)

TM-800 UHF SERVICE MANUAL

147

Receiver

Measurement Adjustment

Item Condition Test Instrument Terminal Part Method

Specification

/Remarks

15. RF

bandpass

filter

Enter adjustment

item “10”, each Ch

corresponds to a

specific RX Freq

Scanner ANT . TP1

djust

software

settings

djust the gain to

the Max. value, the

corresponding freq

is on the rightmost

to bandpass

waveform. Press

[PF6] to save.

16. max

SINAD

CH: RX Center,

turn to CH1(C);

corresponds to a

specific RX Freq

Radio Communication

Test Set

SSG output: -47dBm

MOD:1KHz

DEV:±3KHz(W)

±1.5KHz(N)

FILTER: 0.3-3.0KHz

ANT

SP Jack

L135

djust the

L135,make SINAD

is max

The max volume :

4.6V or higher

1.CH: RX Center,

turn to CH1(C) in

manual adjust mode

2. CH: RX LO, turn to

CH2(L) in manual

adjust mode

17.

Sensitivity

3.CH:RX HI, turn to

CH3(H) in manual

adjust mode

Radio Communication

Test Set

SSG output:

-118dBm

MOD:1KHz

DEV:±3KHz(W)

±1.5KHz(N)

FILTER: 0.3-3.0KHz

ANT

SP Jack

W/N switch

(turn on power

while holding

down [PF6] to

enter Channel

Set Mode)

[UP]/ [DOWN] to

change channel

Check

SINAD:

12dB or higher

TM-800 UHF SERVICE MANUAL

148

Note: The radio must be covered with aluminum chassis when adjusting sensitivity; Connect an RF

power meter to the antenna connector while TX; Connect a SINAD meter with a 16ohm load to the

external [SP] jack.

Radio Communication

Test Set

SSG output:

-120dBm (level 3)

18. SQ Open

Enter adjustment item

“11”, turn to

CH (H), CH(C), CH (L) SSG output

-112dBm (level 9)

djust software

settings at SQL3

and SQL9，press

[PF6] to save.

Press [PF2] to

adjust software

settings , open

the squelch

while the value

is changeless

Radio Communication

Test Set

SSG output:

-122dBm (level 3)

19.SQ Close

Enter adjustment item

“12”, turn to

CH (H), CH(C), CH (L) SSG output:

-114dBm (level 9)

ANT

SP Jack

djust

software

setting

djust software

settings at SQL3

and SQL9，press

[PF6] to save.

Press [PF2] to

adjust software

settings, close

the squelch

while the value

is changeless

20. Distortion DIS≤3%

21. S/N

1.CH: RX Center

Radio Communication

Test Set

SSG output:

-60dBm

ANT

SP Jack

FILTER:

0.3-3.0KHz

Check S/N≥48 (W)

S/N≥42 (N)

TM-800 UHF SERVICE MANUAL

149

Terminal Function

1. Display Unit

Pin No. Name Description

J501 (To MIC Jack)

1 MBL MIC backlight control signal output. “H”: On, “L”:Off.

2 PSB Power outputs after power switch (13.6V+15%).

3 GND Ground.

4 PTT/TXD PTT signal input/ Serial data output.

5 ME MIC ground.

6 MIC MIC signal input.

7 HOOK/RXD Hook signal input/ Serial data input.

8 CM Serial data input for keypad MIC.

J503(To DISPLAY UNIT)

1 VCC +5V.

2 E Ground.

3 LCDCK Clock output for LCD driver.

4 LCDW LCD data write.

5 LCDR LCD data read.

6 LCDCS LCD control signal output.

7 LCD LCD display contrast.

8 LAMP Power for backlight.

J504 (To DISPLAY UNIT)

1 ME MIC ground.

2 MIC MIC signal output.

3 E Ground.

4 REST Reset signal input.

5 TXD2 Serial data output.

6 RXD2 Serial data input.

7 E Ground.

8 PSW Power switch control signal output.

9 SB Power input after power switch (13.6V+15%).

10 SP1 BTL input for remote speaker output.

11 SP2 BTL input for remote speaker output...

J505 (To Speaker)

1 SP1 BTL input for remote speaker output.

2 SP2 BTL input for remote speaker output.

TM-800 UHF SERVICE MANUAL

150

2. TX-RX Unit

Pin No. Name Description

J101 (To DISPLAY UNIT)

1 ME MIC ground.

2 MIC MIC signal output.

3 E Ground.

4 REST Reset signal input.

5 TXD2 Serial data output.

6 RXD2 Serial data input.

7 E Ground.

8 PSW Power switch control signal output.

9 SB Power input after power switch (13.6V+15%).

10 SP1 BTL input for remote speaker output.

11 SP2 BTL input for remote speaker output.

J104 (To VCO UNIT)

1 ST TX RX switch.

2 HT RF output.

3 E GND.

4 8C +8V.

5 MD Modulate output.

6 CV Control voltage.

J108(To POWER)

1 +B 13.6V+0.5V

J110(To EXTSP)

Pin No. Name Description

1 OUT2 Output to speaker.

2 SP2 BTL input for remote speaker output.

3 SP1 BTL input for remote speaker output.

4 GND GND.

TM-800 UHF SERVICE MANUAL

151

Pin No. Name Description

J111 (at the rear panel; to Secondary Development Interface)

1 TXD0 Serial data input.

2 RXD0 Serial data output.

3 MIC2 External MIC signal output.

4 ME MIC ground.

5 AFO Filtered Audio output.

6 AUX5 Programmable auxiliary port.

7 AUX4 Programmable auxiliary port.

8 AUX3 Programmable auxiliary port.

9 HRO Horn Relay Output.

10 HRI Horn Relay Input.

11 PA1 MIC signal output.

12 PA2 MIC signal output.

13 E Ground.

14 SB Power input after power switch (13.6V+15%).

15 IGN Ignition sense input.

J109 (To Secondary Development Interface or Data Encryption and Decryption)

1 8C +8V.

2 E GND.

3 SB Power input after power switch (13.6V+15%).

4 AUX1 Programmable auxiliary port.

5 AUX6 Programmable auxiliary port.

6 AUX7 Programmable auxiliary port.

7 NC No Connection.

8 RSSI Receiver Signal Strength Indication.

9 CTO CDCSS signal output.

10 PCO Transmitting Power Control Output.

11 UL Unlock detection signal output.

12 MII Transmitting audio input.

13 MIO Transmitting audio output.

14 AFI Filtered Audio input.

15 AFO Filtered Audio output.

J102 (To Secondary Development Interface or SMARTUNK)

1 TXD1 Serial data output.

2 RXD1 Serial data input.

3 AUX5 Programmable auxiliary port.

4 DEO Receive signal detection.

5 DI Data modulate input.

6 ALT Alert hint input.

7 5V +5V.

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