Vertex_VX-6000U_serv.pdf

《Vertex_VX-6000U_serv.pdf》由会员分享，可在线阅读，更多相关《Vertex_VX-6000U_serv.pdf（80页珍藏版）》请在收音机爱好者资料库上搜索。

1、1 Introduction This manual provides technical information necessary for servicing the VX-6000U UHF FM Transceiver. Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-qualified persons to service this equipment may result in permanent damage not cov

2、ered by the warranty, and may be illegal in some countries. Two PCB layout diagrams are provided for each double-sided circuit board in the Transceiver. Each side of is referred to by the type of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side has

3、only chip components, and the other has either a mixture of both chip and leaded components (trimmers, coils, electrolyt- ic capacitors, ICs, etc.), or leaded components only. While we believe the technical information in this manual to be correct, VERTEX STANDARD assumes no liability for damage tha

4、t may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any inconsistencies in the technical information would be appreciated. 2003 VERTEX STANDARD CO., LTD. Printed in Japan. Service Manual VX-6000U UHF FM Transceiver Operating Manual Reprint .

5、1-1 Cloning.2-1 Specifications.2-2 Exploded View background noise will now be heard, and you may use this to set the VOLUME knob for the desired audio level. Press and hold the MON button more than 1/ 2 seconds to quiet the noise and resume normal (quiet) monitoring. Transmitting To transmit, wait u

6、ntil the “BUSY” indicator is off (the channel is not in use), and press the PTT (Push-To-Talk) switch on the side of the micro- phone (the “TX” indicator will appear or the “TX” indicator will glow red). While holding in the PTT switch, speak across the face of the microphone in a clear, normal voic

7、e level, and then release the PTT switch to receive. Selecting Groups and Channels H Press the UP (?) or DOWN (?) button (re- peatedly, if necessary) to select a different group of channels. H Turn the CHANNEL selector knob to select a different channel within the current group. Automatic Time-Out T

8、imer If the selected channel has been programmed for automatic time-out, you must limit the length of each transmission. While transmitting, a beep will sound five seconds before time-out. Another beep will sound just before the deadline; the “TX” in- dicator will disappear and transmission will cea

9、se soon thereafter. To resume transmitting, you must release the PTT and wait for the “penalty timer” to expire (if you press the PTT before this timer expires, the timer restarts, and you will have to wait another “penalty” period.) 1-4 POWER Operating Manual Reprint ADVANCED OPERATION Programmable

10、 Function Button (PF button) The VX-6000 includes the seven Programmable Function Buttons (PF button). The PF button functions can be customized, via programming by your VERTEX STANDARD dealer, to meet your communications/network requirements. Some features may require the purchase and in- stallatio

11、n of optional internal accessories. The possible PF button programming features are il- lustrated at the below, and their functions are explained on next page. For further details, contact your VERTEX STAN- DARD dealer. For future reference, check the box next to each function that has been assigned

12、 to the PF button on your particular radio, and keep it handy. 1.5 sec1.5 sec1.5 sec1.5 sec1.5 sec1.5 sec1.5 sec Functions Programmable Function Button (PF button) None SCAN (SCN) Dual Watch Call/Reset Talk-Around (TA) Alpha Numeric (A/N) DIMMER (DIM) Emergency (EMG) Horn Alert (HA) Home Channel (HO

13、M) Intercom (IC) Low Power (LOW) GRP UP GRP DWN CH UP CH DWN AUX A AUX B AUX C Public Address (PA) Monitor (MON) RCL Selectable Tone (ST) SP* Squelch Level (SQL) Compander Encryption* (OPT) * requires RMK-4000 * requires Encryption Unit 1-5 Operating Manual Reprint Channel Scan The Scanning feature

14、is used to monitor multiple signals programmed into the transceiver. While scanning, the transceiver will check each chan- nel for the presence of a signal, and will stop on a channel if a signal is present. To activate scanning: H Press the assigned PF button of the “Scan” mo- mentarily to activate

15、 scanning. H The scanner will search the channels, looking for active ones; it will pause each time it finds a channel on which someone is speaking. To stop scanning H Press the assigned PF button of the “Scan”. H Operation will revert to the channel to which the CHANNEL selector knob is set. Note:Y

16、our dealer may have programmed your radio to stay on one of the following chan- nels if you press the PTT switch during scanning pause: Current channel (“Talk Back”) “Last Busy” channel “Priority” channel “Home” channel Scan Start” channel Dual Watch The Dual Watch feature is similar to the Scan fea

17、- ture, except that only two channels are monitored: The current operating channel; and The “Priority” channel. To activate Dual Watch: H Press the assigned PF button of the “Dual Watch”. H The scanner will search the two channels; it will pause each time it finds a channel on which someone is speak

18、ing. To stop Dual Watch: H Press the assigned PF button of the “Dual Watch”. H Operation will revert to the channel to which the CHANNEL selector knob is set. ADVANCED OPERATION ARTS (Auto Range Transpond System) This system is designed to inform you when you and another ARTS-equipped station are wi

19、thin communication range. During ARTS operation, your radio automatically transmits for about 1 second every 25 (or 55) sec- onds (the interval is programmed by Dealer) in an attempt to Shake hands with the other station. If you move out of range for more than one min- utes, your radio senses that n

20、o signal has been received, a ringing beeper will sound. If you sub- sequently move back into range, as soon as the other station transmits, your beeper will sound. The PF Button Function The PF (Programmable Function) button can be programmed by the dealer to provide two of the other functions desc

21、ribed below. To activate the primary Accessory function, press the PF button momentarily. To access the second- ary Accessory function (which may include the Alarm), press and hold the PF button for 1.5 sec- onds or longer. Call/Reset When this feature is programmed and a selec- tive call has been r

22、eceived, momentarily press the assigned PF button of the “Call/Reset” to reset the flashing indicator and mute the receiver, oth- erwise press the assigned PF button of the “Call/ Reset” to sent your radios identification code (ANI) to the dispatcher. Talk-Around The feature causes the assigned PF b

23、utton of the “Talk-Around” to select simplex operation on semi-duplex channels: the transmit frequency becomes the same as the receive frequency (re- gardless of any programmed offset for the chan- nel). Note:This feature has no effect on simplex channels. After pressing the button, “-TAKARD-” is di

24、splayed on the LCD. Alpha Numeric Press the assigned PF button of the “Alpha Nu- meric” to switch the display between the Group/ Channel number, and the Group/ Channel name (alphanumeric). A tone will sound each time you switch between numerical and alphanumerical display. 1-6 Operating Manual Repri

25、nt DIM Press the assigned PF button of the “DIM” to ad- just the brightness of the display and key backright. EMG (Emergency) Press the assigned PF button of the “EMG” to initiate an emergency call (requires ANI board). When an emergency call is made, not tone is emitted and the display does not cha

26、nge. To end the emergency call, turn the transceiver power OFF. HA (Horn Alert) Press the assigned PF button of the “HA” to turn the Horn Alert function ON or OFF. If you re- ceive a call from the base station with 2Tone or DTMF signaling, horn alert will activate. When you turn Horn Alert ON, a ton

27、e will sound and “ ” appears on the display. . Home (Home Channel) Press the assigned PF button of the “Home” to select the pre-programmed Home Channel. Press it again to return to the previous channel. If used while scanning, pressing this key a second time will change to the revert channel. IC (In

28、tercom) This feature requires dual head configuration. Press the assigned PF button of the “IC” to turn the intercom feature ON or OFF. While ON, you can press the PTT switch to communicate to an- other control head operator without transmitting over the air. When you press this key, a tone sounds a

29、nd “” appears on the display. The in- tercom can be used even while scanning and re- ceiving a call. Low Power Press the assigned PF button of the “Low Power” to set the radios transmitter to the “Low Power” mode. Press this key again to return to “High Power” operation when in difficult terrain. GR

30、P UP/DWN Press the assigned PF button of the “GRP UP” or “GRP DWN” to select a different group of channels. ADVANCED OPERATION CH UP/DWN Press the assigned PF button of the “CH UP” or “CH DWN” to select a different channel within the current group. AUX A/B/C Press the assigned PF button of the “AUX

31、A”, “AUX B”, or “AUX C” to turn the output port (re- spectively). PA (Public Address) Press the assigned PF button of the “PA” to use the transceiver as a PA amplifier. When you en- able this function, a tone sounds and “” ap- pears on the display. The public address can be used even while scanning

32、and receiving a call. MONI (Monitor) Press the assigned PF button of the “MONI” mo- mentarily to cancel CTCSS and DCS signaling squelch; the “MON” icon appears on the display. Press and hold this key for 1/ 2 seconds to hear background noise (unmute the audio); the MON icon blinks on the display. RC

33、L (Channel Recall) During scan, you can press the assigned PF but- ton of the “RCL” to select the last called channel. ST (Selectable Tone) Press the assigned PF button of the “Selectable Tone”, then rotate the CHANNEL selector knob to select a 2-Tone. SP Press the assigned PF button of the “SP” to

34、switch “Front panel”, “Front panel the signal is ad- justed for optimum deviation level and delivered to the next stage. Voice inputs from the microphone and CTCSS are frequency-modulated to the VCO of the synthesiz- er, while DCS audio is modulated by the reference frequency oscillator of the synth

35、esizer. Synthesizer output, after passing through diode switch D1022 (1SS321), is amplified by drivers Q1024 (2SC2954)/Q1030 (2SC5415E)/Q1035 (2SC5107) and power module Q1014 (M68769H) to obtain the required RF drive prior to delivery to the PA Unit. There the RF signal is amplified by paral- lel ju

36、nction transistors Q6001/Q6002 (2SC3102) and passes through antenna switching relay RL6001 and a low-pass filter circuit, and ultimately to the anten- na connector. RF output power from the final amplifier is sam- pled by a directional coupler and is rectified by D6002/D6003 (HSM88ASX2). The resulti

37、ng DC is fed through Automatic Power Controller Q1007 (M5223AGP), Q1001 (2SC4154E), Q1002 (2SB1143S) to control the gain of the transmitter RF amplifier and thus regulate the power output. Generation of spurious products by the transmit- ter is minimized by the fundamental carrier frequen- cy being

38、equal to the final transmitting frequency, modulated directly in the transmit VCO. Addition- al harmonic suppression is provided by a low-pass filter consisting of L6003/L6004/L6005 and C6023/ C6024/C6025, resulting in more than 80 dB of har- monic suppression prior to delivery of the RF ener- gy to

39、 the antenna. DCS Demodulator DCS signals are demodulated on the MAIN- UNIT, and are applied to low-pass filter Q2110 (NJM2902V), as well as the limiter comparator Q2003 (NJM2902V). CTCSS Encoder/Decoder The CTCSS code is generated and encoded by MPU IC Q2025 (MB90F583B). Demodulation and detection

40、of the CTCSS tones are carried out by IC Q2017 (MX165CDW). MPU Operation is controlled by 16-bit MPU IC Q2025 (MB90F583B). The system clock uses a 16.000 MHz crystal for a time base. IC Q2034 (RN5VL35AA) re- sets the MPU when the power is on, and monitors the voltage of the regulated 5V power supply

41、 line. EEPROM The EEPROM retains Tx and Rx data for all mem- ory channels, as well as CTCSS data, DCS data, pres- caler dividing, and REF oscillator data (internal/ex- ternal). 5-1 Alignment The VX-6000 has been carefully aligned at the factory for the specified performance across the fre- quency ra

42、nge specified for each version. Realignment should therefore not be necessary except in the event of a component failure, or when altering the transceiver version. If a sudden prob- lem occurs during normal operation, it is likely due to component failure; realignment should not be done until after

43、the faulty component has been re- placed. All component replacement and service should be performed only by an authorized VER- TEX STANDARD representative, or the warranty policy may be voided. Therefore, if a fault is sus- pected, contact the dealer from whom the transceiver was purchased for instr

44、uctions regarding repair. Authorized VERTEX STANDARD service tech- nicians realign all circuits and make complete per- formance checks to ensure compliance with factory specifications after replacing any faulty components. Those who do undertake any of the following align- ments are cautioned to pro

45、ceed at their own risk. Problems caused by unauthorized attempts at re- alignment are not covered by the warranty policy. Also, VERTEX STANDARD must reserve the right to change circuits and alignment procedures in the interest of improved performance, without notify- ing owners. Under no circumstanc

46、es should any alignment be attempted unless the normal function and oper- ation of the transceiver are clearly understood, the cause of the malfunction has been clearly pinpoint- ed and any faulty components replaced, and the need for realignment determined to be absolutely necessary. Required Test

47、Equipment The following test equipment (and thorough fa- miliarity with its correct use) is necessary for com- plete realignment. Correction of problems caused by misalignment resulting from use of improper test equipment is not covered under the warranty poli- cy. While most steps do not require al

48、l of the equip- ment listed, the interactions of some adjustments may require that more complex adjustments be per- formed afterwards. Do not attempt to perform only a single step unless it is clearly isolated electrically from all other steps. Have all test equipment ready before beginning, and fol

49、low all of the steps in a sec- tion in the order presented. RF signal generator: calibrated output level at 1000 MHz Deviation Meter (linear detector) AF Millivoltmeter SINAD Meter Inline Wattmeter with 5% accuracy at 1000 MHz Regulated DC Power Supply: adjustable from 10 to 17 VDC, 35A 50-ohm non-reactive Dummy Load: 200 W at 1000 MHz Frequency Counter: 0.1 ppm accuracy at 1000 MHz AF Signal Generator DC Voltmeter: high impedance RF