Vertex_VX-5500U_serv.pdf

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1、1 Introduction This manual provides technical information necessary for servicing the VX-5500U 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, electrolytic 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 that

4、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. EC034U90A Service Manual VX-5500U UHF FM Transceiver Operating Manual Reprint. 1-1 Clonin

5、g.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 sec- onds to quiet the noise and resume normal (quiet) monitoring. Transmitting To transmit, wait until th

6、e “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 voice level

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

8、 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 cease soon the

9、reafter. 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 Function B

10、utton (PF button) The VX-5500 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- stallation of option

11、al internal accessories. The possible PF button programming features are il- lustrated at the below, and their functions are ex- plained 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 to the P

12、F button on your particular radio, and keep it handy. 1.5 sec 1.5 sec 1.5 sec 1.5 sec 1.5 sec 1.5 sec 1.5 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 (HOM)

13、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 is

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

15、ng. 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 Press the assigned PF button of the “Scan”. Operation will revert to the channel to which the CHANNEL selector knob is set. Note:Your dealer ma

16、y have programmed your radio to stay on one of the following chan- nels if you press the PTT switch during scan- ning 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- ture, exc

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

18、assigned PF button of the “Dual Watch”. 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 within communication range. During ARTS o

19、peration, 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 no signal has been received, a ringing b

20、eeper 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 described below. To activate the primary Ac

21、cessory 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 selective call has been received, momentarily press the as- signed

22、 PF button of the “Call/Reset” to reset the flashing indicator and mute the receiver, other- wise 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 button of the “Talk-Around” to select si

23、mplex 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 displayed on the LCD. Alpha Numeric Press

24、 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 Reprint DIM Press the assigned PF button of t

25、he “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 emit- ted and the display does not change. To end the emergency call, turn t

26、he 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 receive a call from the base station with 2Tone or DTMF signaling, horn alert will activate. When you turn Horn Alert ON, a tone will sound and “ ” appears on the disp

27、lay. 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 (Intercom) This feature requires dual head co

28、nfiguration. 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 and “” appears on the display. The in- terc

29、om 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. GRP UP/DWN Press the assigned PF button of t

30、he “GRP UP” or “GRP DWN” to select a different group of chan- nels. 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 A”, “AUX B”, or “AUX C” to turn the outp

31、ut 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 and receiving a call. MONI (Monitor) Pre

32、ss 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. RCL (Channel Recall) During scan, you can p

33、ress 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 switch “Front panel”, “Front panel Requir

34、es FIF-7A) MDC1200Digital ANI encoder Unit (Requires FIF-7A) FP-1023External 23A Power Supply MLS-100Mobile Loud speaker (12 W Peak Power) MMB-75Mobile Mounting Bracket MMB-76Locking Mobile Mounting Bracket FIF-7AInter face Board (for F2D-8, F5D-14, VTP-50, FVP-25) CN-6Inter face Board (for Accessor

35、ies) LF-1Line Filter 1-9 Operating Manual Reprint DSUB 25-PIN ACCESSORY CONNECTOR Pin 1: RSSI Analog Output A DC voltage proportional to the strength of the signal currently being received (Receiver Signal Strength Indicator) is provided on this pin. This low impedance output is generated by the rec

36、eiver IF sub-system and buffered by an internal op- amp. Typical voltages are graphed as follows: DSUB25 output level (V) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 1259 398125398 12.541.250.4 0.125 0.04 SSG Input Level (uV) DSUB 25-Pin Numbering Pin 2, 3, 4, 5 realignment should not be done until af

37、ter the faulty component has been re- placed. All component replacement and service should be performed only by an authorized VERTEX STANDARD representative, or the warran- ty policy may be voided. Therefore, if a fault is sus- pected, contact the dealer from whom the transceiver was purchased for i

38、nstructions 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

39、 proceed 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 circums

40、tances 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 T

41、est 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 requir

42、e all 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

43、 follow 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, 15A 50-ohm n

44、on-reactive Dummy Load: 100 W at 1000 MHz Frequency Counter: 0.1 ppm accuracy at 1000 MHz AF Signal Generator DC Voltmeter: high impedance RF Sampling Coupler (attenuation pad) AF Dummy Load: 4 ohms, 20W Oscilloscope Spectrum Analyzer IB M PC - com p a ti b l e com p u te r w/ VERTEX STANDARD CT-71

45、programming cable and CE49 channel programming editor. Alignment Preparation & Precautions A dummy load and inline wattmeter must be con- nected to the main antenna jack in all procedures that call for transmission, except where specified otherwise. Correct alignment is not possible with an antenna.

46、 After completing one step, read the follow- ing step to determine whether the same test equip- ment will be required. If not, remove the test equip- ment (except dummy load and wattmeter, if con- nected) before proceeding. Correct alignment requires that the ambient tem- perature be the same as tha

47、t of the transceiver and test equipment, and that this temperature be held constant between 68 and 86F (20 30C). When the transceiver is brought into the shop from hot or cold air it should be allowed some time for thermal equalization with the environment before alignment. If possible, alignments s

48、hould be made with oscilla- tor shields and circuit boards firmly affixed in place. Also, the test equipment must be thoroughly warmed up before beginning. 5-2 Alignment PLL & Transmitter Set up the test equipment as shown for transmit- ter alignment. Maintain the supply voltage at 13.8 V DC for all

49、 steps. Before beginning, connect the transceiver and PC using the CT-71 programming cable, and download the EEPROM data from the transceiver to the com- puter. Store this data in a disk file so that it can be saved and retrieved later. Using the table below, program the channel, CTCSS, and DCS alignment settings for your transceiver version. Upload this file to the transceiver. Note:Signal levels in dB referred