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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
Scanner
20A/30V Power Supply
Digital Voltmeter
Power Meter
Signal Line (with dummy load)
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
●
1 set
1 set
1 set
1 set
1 set
1 pcs
143
TM-800 UHF SERVICE MANUAL
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Summary of Contents for Hytera tm-800
- Page 1 TM-800 UHF SERVICE MANUAL 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:...
- Page 2 TM-800 UHF SERVICE MANUAL Model RX/TX 1 ( FC ) 2 (F L ) 3 (FH ) 155.15 136.15 145.55 155.00 155.40 RX(MHz) 173.85 164.55 155.20 （V） TX(MHz) 155.00 136.00 174.00 145.50 164.50 155.00 155.20 155.40 481.15 450.15 465.55 481.00 481.20...
- Page 3 TM-800 UHF SERVICE MANUAL Transmitter Measurement Adjustment Specification Item Condition /Remarks Test Instrument Terminal Part Method Enter adjustment item Radio 4.TX “1”, each Ch Adjust software Communication Adjust to Ch frequency Error <50Hz Frequency corresponds to a settings Test Set...
- Page 4 TM-800 UHF SERVICE MANUAL Radio Change Each Ch corresponds Communication CDCSS Check 9.CDCSS to a specific TX Freq, Test Set settings with waveform Balance enter adjustment item FILTER Selector Knob “4” LPF: 300Hz Each Ch corresponds Radio to a specific TX Freq,...
- Page 5 TM-800 UHF SERVICE MANUAL Receiver Measurement Adjustment Specification Item Condition /Remarks Test Instrument Terminal Part Method Adjust the gain to the Max. value, the Enter adjustment 15. RF Adjust corresponding freq item “10”, each Ch bandpass Scanner ANT . TP1...
- Page 6 TM-800 UHF SERVICE MANUAL Radio Communication Press [PF2] to Test Set Adjust software adjust software Enter adjustment item SSG output: settings at SQL3 settings , open “11”, turn to -120dBm (level 3) 18. SQ Open and SQL9，press the squelch CH (H), CH(C), CH (L) [PF6] to save.
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Page 7: Terminal Function
TM-800 UHF SERVICE MANUAL Terminal Function 1. Display Unit Pin No. Name Description J501 (To MIC Jack) MIC backlight control signal output. “H”: On, “L”:Off. Power outputs after power switch (13.6V+15%). Ground. PTT/TXD PTT signal input/ Serial data output. MIC ground. - Page 8 TM-800 UHF SERVICE MANUAL 2. TX-RX Unit Pin No. Name Description J101 (To DISPLAY UNIT) MIC ground. MIC signal output. Ground. REST Reset signal input. TXD2 Serial data output. RXD2 Serial data input. Ground. Power switch control signal output. Power input after power switch (13.6V+15%).
- Page 9 TM-800 UHF SERVICE MANUAL Pin No. Name Description J111 (at the rear panel; to Secondary Development Interface) TXD0 Serial data input. RXD0 Serial data output. MIC2 External MIC signal output. MIC ground. Filtered Audio output. AUX5 Programmable auxiliary port. AUX4 Programmable auxiliary port.
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