Squelch, Transmitter Power | Motorola HT 1000 specs

8.Select the Hear Clear RATED AUDIO softpot, and adjust the UP/ DOWN arrow keys to obtain rated audio (3.74 Vrms) into a speaker (28 ohms) or equivalent resistive load.

9.Press F8 to program the softpot value.

10.Press F10 to return to the RECEIVER menu.

Squelch

NOTE: Verify that audio output is set to rated audio (3.74 Vrms)

1.Select the 25kHZ squelch tuning menu. (note: 25 kHZ must be tuned before tuning either 12.5kHZ or 20kHZ squelch).

2.With no signal applied, decrease the softpot value until squelch opens. Set the RF test generator to the frequency plus the following offset; (VHF: +200HZ), (UHF: +200HZ), (800MHZ: +500HZ). Adjust the generator for 8 to 10 dB Sinad.

3.Increase the softpot until the squelch closes.

4.Monitor for squelch chatter. If chatter is present, increase the softpot until no chatter is detected. Press F8 to program the softpot value. Press ENTER to select the next softpot adjustment.

5.Repeat step 2 through 4 for all test frequencies shown on the screen.

6.If you are using 25kHZ channel spacing, skip to step 8. Otherwise, go into the 12.5kHZ or 20kHZ squelch tuning menus.

7.Repeat steps 2 through 5.

8.Press F10, then F10 again to return to the service menu.

Transmitter Power

VHF and UHF radios require two power-level adjustments, a high- power or rated-power adjustment, and a low-power adjustment. The low power adjustment is required since the radio may be used in a reduced power mode, or with a vehicular adapter.

NOTE: All power measurements are to be made at the antenna port.

1.From the SERVICE menu, press F2 to select TRANSMITTER alignment.

2.Press F3 to select the TRANSMIT POWER softpot. The screen will indicate the transmit test frequencies to be used.

3.Begin with the highest test frequency shown.

4.Press F6 to key the radio, and use the UP/DOWN arrow keys to adjust the transmit power per the value shown in Table 15.

5.Press F6 to dekey the radio, and then press F8 to program the value.

6.Repeat steps 4 and 5 for the remaining test frequencies.

7.Press F10, then F2 to return to the TRANSMIT menu.

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Motorola HT 1000 service manual Squelch, Transmitter Power

Contents

HT 1000, JT 1000, MT 2000, MTS 2000, and MTX Series Page Safety Foreword Contents Disassembly and Reassembly Iii Page Replacement Parts Ordering List of Tables Vii Related Publications Available Separately Viii Model Numbering System Model Charts Model Programming Flashing, and Cloning Conventional Systems Radios HT 1000 Models Model Chart H01RDH9PA3AN Conventional Systems Radios JT 1000 and MT 2000 Models PMUF6500D Private Systems Radios MTS 2000 Models A a List of Batteries List of AntennasXii Xiii Maintenance Specifications for VHF Radios Xiv Maintenance Specifications for 800MHz Radios ALC Glossary Xvi PLL R N I N G IntroductionPage Recommended Test Equipment Recommended Test Equipment Field Programming Service Aids and Recommended Tools Motorola Part no Description Application Service Aids Recommended Service Tools Service Tools Earlier. If the radio is placed in Test Mode General SetupTest Mode Equipment Initial Control Settings NO. Description Function Beeps Test Environments, HT 1000/JT 1000 Radios Test Frequencies, HT 1000 / JT Control Head Test Mode, HT 1000/JT 1000 RadiosPage Page Test Frequencies, MT 2000, MTS 2000, and MTX Series Radios Test Environments, MT 2000, MTS 2000, and MTX Series Radios Test Name Communications Radio Test SET Comments Analyzer Receiver Performance Checks Test Communications Radio Test SET Comments Name Analyzer Transmitter Performance Checks Power-up Display Codes Error-Code DisplaysPower-up Display Codes Operational Display Codes Operational Display Codes General Radio Alignment Procedure Dtmf Reference Oscillator Alignment Perform the following procedures in the sequence indicated Rated Audio Front-End Pre-Selector VHF/UHF onlyStandard Test Modulation 1 kHz Tone Squelch Transmitter Power VHF UHF Transmit Power Setting Transmit Deviation Limit Transmit Deviation Limit Transmit Deviation Limit Reference Transceiver Board IdentificationPage TX VCO Crossover Procedure RX VCO Crossover Procedure Signalling DeviationDtmf Tuning High Speed Signalling MDC Signalling Deviation This Radio Contains STATIC-SENSITIVE Disassembly and Reassembly Removing the Battery Disassembly to Board Level Separating the Cover From the Chassis Rotating the Front Cover Separating Control Top From the Chassis Removing the RF and Controller Boards Disassembly of Control Top Disassembly of Front Cover Assembly Removing the Keypad/Display Board Reassembly Reinstalling the Speaker RetainerMAEPFBracket-22578-A Page Seating the Flex Front Cover Assembly to Chassis Knobs, Antenna, and Battery Introduction MaintenancePreventive Maintenance Inspection Cleaning General Safe Handling of Cmos Devices Suffer die-bond delamination and possible SpecificIf neighboring Pbga components are heated Above 365 degrees F degrees C., they will Solder Tabs Page U t i o n To Replace an Pbga compo- nent Thin Small Outline Package Tsop Components Shields Removing and Replacing To Replace the RF PA To Remove the RF PAPage Exploded Views Refer to electrical parts list transceiver board Top-Display Radios Keypad Radios SHIELD, PA Uni-board RadiosPage Circuit Board Layers Transceiver Controller Schematic and Circuit Board Notes SYN Integrated Circuit Details with Pin-Out Names 35U50 X Wlyww Wlyww Universal Connector Option Select OPT SEL Definition Universal Connector Pin Numbers and Signal Assignments MAEPF-2 Fuse 1-Amp CAPACITOR, Fixed pF ± 5%Unless stated Diode See Note U102 BATT+ Error FeedbackNC NC NC NC CLK 5VREG SB+ MAEPF-2630 0625W unless stated CAPACITOR, Fixed pF ±30%Transistor See Note RESISTOR, Fixed Ω ± 5% DAC CLK SwitchConnector EXT. ANT These Levels Measured by Removing R52 Batt NC NC NC NC NC CLKDET VDD VDD2 Cext MAEPF-2630 50V unless stated CAPACITOR, Fixed pF ± 25%COIL, RF nH GND1 GND2 GND3 GND4 GND5 RF SwitchCR6 CR7 CR8 CR9 ABP GND1 GND2 GND3 AG2 VMULT2 Frefout VDD VDD2DET NC3 NC4 NC5 NC6 NC7 NC8 NC9 MAEPF-26305 RESISTOR, Fixed Ω ± 0.0625W 3Pack.xls CAPACITOR, Fixed pF ± 5% Sheet Unless stated U105 U104 SYN SEL 5VREG LCKVCO MOD RAW B+ LCK SW B+ Transceiver Board Parts List and Component Location Diagrams DIODE, Zener See Note 1 CAPACITOR, Fixed pF ±5%Fuse 1.0A Filter See Note 2, 73.35MHZ RESISTOR, FixedΩ ± 5% .0625W unless stated U101 GND30 CLK BattGND32 GND31 NUF6499B/C and NUF6502B/C 900MHz Diode U105 GND21 SYN SYN SELGND30 REF OSC GND27 NUF/PMUF6499D 900MHz Electrical Parts List, Transceiver 900MHz NUF/PMUF6499D To Universal Connector Reset 5V TX 0V RXANODE2 Pacntl INT CAP Antswbs Switch GND GND1 GND2 RF Switch Synthesizer Je di HT/JT Tra ns . DIODE, Zener Clear HearClear OptionU701 Hear Asficsel ResetbU702 U708 Volsense NC3 Extspkrsel SB+ Intspkr ErrorIntmic Optenable Spkrcom Spkrcom Aupaen Extspkr U706 U709NC5 NC6 NC7 NC8 Controller BOARD’ Parts List and Component Location Diagram RESISTOR, Fixed Ω ± 5% GND10 GND11 GND12 GND13 Gnda Chact Reset Busy GND VEEUpclk A3 Clke VDD3 VDD4 Vccence Enoe Enwe SPI RX Data Miso Power SectionAnalog Section SCK SPI TX Data Mosi U712 Main Power SwitchVdd Regulator Vaud Regulator MAEPF-25672 CAPACITOR, Fixed pF ± 103DIODE, Zener See Note Cpnenab Expout Ffenab Cbufou Hiclmpen Compen Lcdis Hcidis FfenSqdet Chact Univio Pwrrst Sqdet Chact Icenab Ffout Uvcs UV2CS BootstrpVSS4 VSS1 Synsel Roscsel Ascficsel Bootstrp Csgen Scirx Eecs Muxcntl SEL LED Extspkr Datalatch Extmic SWB+ GND1 Blcntl Intspkr Reset Spkrcom IntmicOPTB+/BOOTSEL Mosi GND2 Keyint OPTSEL1 NTN7512D/E, NTN7513E, NTN7857D/E and NTN7858D/E 107 MAEPF-26096 RESISTOR, Fixed Ω ± 0.0625W unless stated 109HearClear Components Not Placed on NCN6176A CAPACITOR, Fixed pF ± 5% 50V unless stated Ffcnt L SWB+ Sqdet ChactExpin Lodsab Cbufin Expbyp Rssiin Ffin VAG Nfilin U705 Digital Section U702 Main Power Switch Vdd Regulator Front Cover Display Flex 115 Replacement Parts OrderingMotorola Online Mail Orders 116 Telephone OrdersFAX Orders Parts Identification Introduction Circuit Description Appendix aAppendix a Appendix . Secure Module Signal Name Connector Plug Function P1 PIN Number Troubleshooting Secure Operations Appendix a . Key Variable Loader Service Aid Retrofit Instructions Set XL IC Present Field Anti-static precautions must be observed at all timesGeneral Set Secure-Equipped Field Channels Secure Alignment ProcedureEnable Secure On Desired Secure Retrofit Tuning Appendix a . Secure Deviation Compensation Removal Removal And Installation Appendix . Secure Module Location Detail XL&XL Appendix a . RSS Secure Parameters Appendix B . HT 1000 Models Appendix BAppendix B H01RDC9AA1BN Appendix B . JT 1000 Models Appendix B . MT 2000 Models PMUE7272B PMCN6147B H01SDH9AA7AN Appendix B . MTS 2000 Models H01RDD9PW1AN H01RDH9PW1AN H01SDH9PW1AN H01UCH6PW1AN PMUF6499D Pmcn Appendix B . MTX Series Models H01KDF9DB5AN H01RDD9DB4AN H01RDH9DB7AN H01SDH9DB7AN H01UCC6DF3AN H01WCC4DB3AN H01WCH4DB7AN Page Motorola, Inc West Sunrise Boulevard Ft. Lauderdale, FL