Vertex_VX-4000U_serv.pdf

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1、1 Introduction This manual provides technical information necessary for servicing the VX-4000U 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 covered

2、 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 only

3、 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 that ma

4、y 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. 2002 VERTEX STANDARD CO., LTD. Printed in Japan. Service Manual VX-4000U UHF FM Transceiver Operating Manual Reprint.1-1 C

5、loning.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 until

6、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 voice lev

7、el, 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 Timer

8、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 cease so

9、on 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.) 1-4VX-4000 UHF Service Manual Operating Manual Reprint ADVANCED OPERATI

10、ON Programmable Function Button (PF button) POWER The VX-4000 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 purc

11、hase and in- stallation of opetional 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

12、 that has been assigned 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) Noise Blanker* (NB) Alpha Numeric (A/N) DIMMER (DIM) Emerg

13、ency (EMG) Horn Alert (HA) Home Channel (HOM) 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* Squlch Level (SQL) Encryption* (OPT) * for VX-4000L * requires RMK-4000 * requires Encryption Unit 1-5VX-4000 UHF S

14、ervice Manual Operating Manual Reprint Channel Scan The Scanning feature 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 scannin

15、g: H Press the assigned PF button of the “Scan” mo- mentarily to activate 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 wil

16、l revert to the channel to which the CHANNEL selector knob is set. Note:Your 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 St

17、art” channel Dual Watch The Dual Watch feature is similar to the Scan fea- 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 chann

18、els; it will pause each time it finds a channel on which someone is speaking. 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

19、 designed to inform you when you and another ARTS-equipped station are within 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 yo

20、u move out of range for more than one min- utes, your radio senses that no 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 c

21、an be programmed by the dealer to provide two of the other functions described 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. Cal

22、l/Reset When this feature is programmed and a selec- tive call has been received, 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

23、(ANI) to the dispatcher. Talk-Around The feature causes the assigned PF button 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 n

24、o effect on simplex channels. After pressing the button, “TA” is displayed on the LCD. Noise Blanker (for VX-4000L) Because local noise can be particularly trouble- some in the VHF Low-Band frequency spectrum, the Low-Band version of the VX-4000 includes a Noise Blanker feature, which may be toggled

25、 on and off by pressing the assigned PF button of the “Noise Blanker” for the appropriate length of time. 1-6VX-4000 UHF Service Manual Operating Manual Reprint Alpha Numeric Press the assigned PF button of the “Alpha Nu- meric” to switch the display between the Group/ Channel number, and the Group/

26、 Channel name (alphanumeric). A tone will sound each time you switch between numerical and alphanumerical display. 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 ini- tiate an eme

27、rgency call (requires ANI board). When an emergency call is made, not tone is emitted and the display does not change. 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 cal

28、l 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 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 p

29、revious channel. If used while scanning, pressing this key a second time will change to the revert channel. IC (Intercom) 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 communic

30、ate 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- 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 transmitt

31、er to the “Low Power” mode. Press this key again to return to “High Power” operation when in difficult terrain. ADVANCED OPERATION GRP UP/DWN Press the assigned PF button of the “GRP UP” or “GRP DWN” to select a different group of chan- nels. CH UP/DWN Press the assigned PF button of the “CH UP” or

32、“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 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- ab

33、le 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) 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 an

34、d 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 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 “Selecta

35、ble 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 & Body” and “Body” speaker. When “Body” is selected, a tone sounds and the “” icon appears on the display. You can use this function while scanning a

36、nd receiv- ing a call. However, all audio will be emitted from the PA speaker. 1-7VX-4000 UHF Service Manual Operating Manual Reprint SQL (Squelch Level) You can manually adjust the squelch level using this function: 1. Press the assigned PF button of the “SQL”. A tone sounds and SQL appears on the

37、display with the current squelch level. 2. Rotate the CHANNEL selector knob to select the desired level. 3. Press the this key. A tone sounds and the dis- play returns to the normal channel. Encryption (Option) When the Voice Scrambler feature is enabled, pressing the assigned PF button of the “Encr

38、yp- tion” toggles the Scrambler on and off. ADVANCED OPERATION 1-8VX-4000 UHF Service Manual Operating Manual Reprint OPTIONAL ACCESSORIES MH-25B7AMicrophone MH-53C7AHeavy Duty Microphone MH-53A7AHeavy Duty Microphone w/Noise Canceler MH-53B7AHeavy Duty DTMF Microphone w/Noise Canceler CE35Programmi

39、ng Software CT-70Radio Programming Cable (Requires VPL-1) CT-71Radio to PC Programming Cable CT-72Radio to Radio Programming Cable CT-81Cable for RMK-4000 (6 m) CT-82Cable for RMK-4000 (2.5 m) CT-83Cable for RMK-4000 (0.6 m) CNT-4000Control Head RF DECKRF Deck w/MMB-75 (for Dual Band Installations)

40、RMK-4000SHRemote Kit (for Single Transceiver) RMK-4000DHRemote Kit (for Dual-Head Installations) RMK-4000DBRemote Kit (for Dual Band Installations) RMK-4000DBHRemote Kit (for Dual Band plus Dual Head Installations) F2D-82-Tone Decode Unit (Requires FIF-7) F5D-145-Tone ENC-DEC Unit (Requires FIF-7) V

41、TP-50VX-Trunk Unit (Requires FIF-7) FVP-25Encryption/DTMF pager Unit (Requires FIF-7) FP-1023External 23A Power Supply MLS-100Mobile Loud speaker (12 W Peak Power) MMB-75Mobile Mounting Bracket MMB-76Locking Mobile Mounting Bracket LF-1Line Filter FIF-7Inter face Board (for F2D-8, F5D-14, VTP-50, FV

42、P-25) CN-6Inter face Board (for Accessories) FIF-8Flash ROM Adapter 1-9VX-4000 UHF Service Manual 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. T

43、his low impedance output is generated by the re- ceiver 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

44、, 3, 4, 5 & 6: AI1, AI2, AI3, AI4 & AI5 Universal Input Port These input port features can be programmed via the CE35 programmer. The same item can not be chosen twice. To select the “Input port” page, (View Com- mon View DSUB-25pin connector Input port). LOGIC level (+5V / 0V) input (Low active). H

45、igh Impedance input. None MONThis feature is the same as pressing and holding in the Monitor key. DIMLCD illumination dimmer “on.” HookActivates the Hook1 feature. SCANActivates the scanner. G-SCANActivates the Group scanner. RPT INHDisables the repeater feature during Multi Deck operation. ENGActiv

46、ates the Emergency feature. HomeSwitches to the Home Channel. CH SW0Memory channel recall (Channel Switch Table bit 0) CH SW1Memory channel recall (Channel Switch Table bit 1) CH SW2Memory channel recall (Channel Switch Table bit 2) CH SW3Memory channel recall (Channel Switch Table bit 3) Example If

47、 you assign “CH SW0” and “CH SW1” to the Universal Input Port, you can recall Channels 13 as shown below. ChannelCH SW0CH SW1 110 201 311 Pin 2 Pin 4 Pin 6 Pin 3 Pin 5 1-10VX-4000 UHF Service Manual Similarly, if you assign “CH SW0,” “CH SW1,” and “CH SW2” to the Universal Input Port, you can recall

48、 Channels 17 as shown below: The Memory Channel is determined via the CE35 Programmer. (View Common View DSUB- 25pin connector Channel switch Table). Pin 7: E GND Ground for all logic levels and power supply re- turn. Pin 8: AO2 Universal Output Port Open collector output. Output voltage 0 5 V, Max.

49、 sink current 30 mA. The possible programming features (use CE35) are illustrated below. A KEY/B KEY/C KEY/D KEY/E KEY/HA/Invert Refer to the “Pins 20, 21, & 22” section for details. Pin 9: TXD2 Digital Output for Alignment software Connect to the RS232C cable (requires FIF-8 and CT-88) Pin 10: RXD2 Digital Input for Alignment software Connect to the RS232C cable (requires FIF-8 and CT-88) Pin 11: TXS EXT PTT Shorting this port to gro