VXR7000.pdf

1 Introduction This manual provides technical information necessary for servicing the VXR-7000 FM Land Mobile Repeater. 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 by the warranty, and may be illegal in some countries. Two PCB layout diagrams are provided for each double-sided circuit board in the repeater. 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 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 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. 2006 VERTEX STANDARD CO., LTD. (E136890B) Service Manual VXR-7000 (UHF) Desktop Repeater Operating Manual Reprint. 2 CE27 Programming Software Instruction .10 Specifications . 16 Exploded View in this condition, only “noise squelch” is active, and any sig- nal present on the channel will be heard. If you press and hold this switch for more than 2 second, the green LED will blink and the squelch will open; in this con- dition, background noise will be heard if no signal is present. ACCESSORY Switch This switch can be set up for special applications, such as High/Low power selection, as determined by your Vertex Standard dealer. The LED above it glows green when this function is activated. For further details, con- tact your Vertex Standard dealer. VOL Knob This control knob adjusts the receiver volume level from the front panel speaker. If desired, this control knob may be set fully counterclockwise when repeater monitoring is not needed. SQL Knob This control knob selects the noise squelch threshold level. Set it to a position just above the point where the BUSY lamp goes out when no signal is present. Channel Selector Buttons (? and ?) Press one of these buttons to select the operating chan- nel. Channel Indicator This seven-segment LED indicates the operating chan- nel number. 3 Operating Manual Reprint Rear Panel ANI Display The ANI LCD (Liquid Crystal Display) indicates the pre-programmed ANI message according to the ANI code received. TX/BUSY Indicator The BUSY indicator glows green when the channel is busy, and the TX indicator glows red when the repeater is transmitting. ANI RESET Button (1)ANI Press this button to clear the message on the ANI display, and turn off the LCD backlight. (2)ENI Press this button to turn off the Alert tone. Press this button again to clear the message on the ANI display, and turn off the LCD backlight. EXT SP Jack This 3.5-mm, 2-pin jack provides variable audio out- put for an external speaker. The audio output imped- ance at this jack is 4 16 , and level varies ac- cording to the setting of the front panels VOL con- trol. TX Antenna Jack This N-type coaxial jack provides the transmitting out- put signal for connection to the transmitting antenna or TX jack on the duplexer, if used. The output im- pedance requirement is 50 . RX Antenna Jack This N-type coaxial jack accepts the receiver input signal from the receiving antenna or RX jack on the duplexer, if used. The input impedance requirement is 50 . ACC Jack This DB-25 connector provides a data interface be- tween the microprocessor in the VXR-7000 and pe- ripheral devices (such as the VX-TRUNK Unit). LINE Jack This 8-pin modular jack is used for remote control. It provides TX and RX audio, TX keying, and squelch status output. The TX and RX audio impedance is 600 . GND Terminal For best performance and safety, the GND terminal should be connected to a good earth ground using a short, heavy, braided cable. AC Jack This receptacle accepts the AC power cord, which should be connected to the AC mains supply or wall outlet. The AC line voltage must match that for which the repeater is wired. BATT Terminal These terminal posts accept 12 15 VDC for operat- ing the repeater from a battery or other DC source. When operating from AC mains, a small trickle cur- rent is present at these terminals to maintain battery charge. A battery rated for 12 volts, 55 Ah (minimum) is recommended for short-term emergency/backup op- eration. 4 Operating Manual Reprint ACC Jack DB-25 Pin Numbering ACC Connector Port The VXR-7000 repeater is provided with a 25-pin DB- 25F female connector for interconnections to accesso- ries. Use a DB-25M 25-pin male connector to connect accessories to the repeater. The pins on the accessory con- nector are explained in detail as follows: Pin 1: GND Chassis ground for all logic levels and power supply return. Pin 2: +13.8 V Power Supply This pin provides 13.8 Volts, 1.0 A, regulated DC from the repeater supply. Use a 1 A fuse in the external devices DC line to prevent damage to the repeater. Pin 3: TX AF IN Analog Transmitter Input (Voice Band: 300 3,000 Hz) Input impedance is approx. 600 . This audio is in- jected before the splatter filter stage, so excess signal input levels are clipped. Use shielded cable to connect to this pin, and connect the shield to GND. Pin 4: TONE IN Transmitter Input (Sub-audible Band: 6 250 Hz) The input is high impedance (approx. 22 k). Inject- ing too high a voltage here causes over-deviation of CTCSS or DCS, degrading performance. Use shielded cable to connect to this pin, connecting the shield to GND. Pin 5: N.C. (No connection.) Pin 6: DISC OUT Analog Output (Wide-Band: 0 3,000 Hz) Received signals with standard deviation produce approx. 1 Vp-p audio at this pin. The output imped- ance is approx. 600 , and is extracted before the de- emphasis and squelch circuitry. Use shielded cable to connect to this pin, and connect the shield to GND. Pin 7: GND Chassis ground for all logic levels and power supply return. Pin 8: RSSI Analog Output A DC voltage proportional to the strength of the sig- nal currently being received (Receiver Signal Strength Indicator) is provided on this pin. This low imped- ance output is generated by the receiver IF sub-sys- tem and buffered by an internal op-amp. Typical volt- ages are graphed as follows: Pin 9: COAX. SW Logic Output (Active Low) This output is intended for controlling an external co- axial switching relay. It is an open collector output which can sink approx. 10 mA when active. This sig- nal only switches if the repeater has been programmed for “SIMPLEX” mode. If programmed for “DU- PLEX,” the signal remains open (high impedance) at all time. Pin 10: N.C. (No connection.) Pin 11: NSQ DET This is an open-collector, active-low output capable of sinking about 10 mA. It indicates that the receiver squelch is open. If the squelch control is properly set, this indicates a carrier on the receiver channel. 5 Operating Manual Reprint Channel 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin 17 (D2) 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 Pin 18 (D1) 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 Pin 19 (D0) 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 Pin 16 (D3) 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 Pin 12: EXT PTT This input is internally pulled up to 5 VDC. When pulled low by an external device, it keys the repeater transmitter while the repeater is operating in the “BASE” mode. Avoid voltage in excess of 5 V on this pin, or internal damage to the microprocessor on the repeater CNTL Unit may result. Pin 13: GND Chassis ground for all logic levels and power supply return. Pin 14: GND Chassis ground for all logic levels and power supply return. Pin 15: N.C. (No connection.) Pin 16, 17, 18, turning off the equipment during interconnection avoids the potential for damage to the electronics caused by voltage spikes. Insert the distribution diskette into your 3” drive (after booting DOS), and make a copy of the diskette; use the distribution diskette for archive purposes, and use the disk copy for programming. Place the CE27 (copy) diskette into your 3” drive (usu- ally “Drive A”), and log onto this drive by typing “A: ENTER”, then load the contents of the CE27 diskette into a directory named CE27, using the COPY command (e.g. “COPY A:*.* C:CE27”). Now type “CE27 ENTER” to start the program. The in- troductory screen will appear, and you may press any key to enter the main screen. Choose the “Help” contents option (F1) from the programs Menu for assistance with channel programming or setting of parameters. Important Note! ?Do not run the CE27 programming software di- rectly from the original distribution diskette. Copy the programming software to your computers hard disk, then run the software from the hard disk only. Keep the original distribu- tion diskette in a safe place in case you need to make another copy of it at a later date. ?Before creating the programming data for your VXR-7000 via the CE27 programming software, upload the current factory hardware environ- ment data from the VXR-7000, using the F5 (ReadRom) command. Use this data profile to create the programming data for this repeater. 11 Operating Manual Reprint CE27 Main Screen (Scrolled Right) Channel Data Items Ch: Channel Number This 2-digit number (01 - 16) is used to identify the chan- nel. Channel numbers occur in sequence, and their order can not be changed. Rx Freq.: Edit Receive (or simplex) Frequency Use the 0 - 9 keys to enter the desired channel fre- quency directly, and press the ENTER key. CTCSS Decoders: Toggle CTCSS Decoder ON/OFF, sets CTCSS Frequency Press the SPACE bar to toggle the CTCSS Decoder “on” or “off,” or press the ENTER key to display the “TONE SELECT” window, from which you may select a CTCSS frequency using the ARROW key; press ENTER again to accept the selected tone, or press ESC key to cancel. DCS Decoders: Toggle DCS Decoder ON/OFF, sets DCS Code # Press the SPACE bar to toggle the DCS Decoder ON or OFF, or press the ENTER key to d i s p l a y t h e “CODE SELECT” window, from which you may select a DCS code using the ARROW key; press ENTER again to ac- cept the selected code, or press the ESC key to cancel. W/N: Wide/Narrow Channel Spacing This function selects the channel spacing environment in which the VXR-7000 operates. W (Wide) =25 kHz Channel Spacing, 5 kHz De- viation. N (Narrow) = 12.5 kHz Channel Spacing, 2.5 kHz Deviation. Press the SPACE bar to select the desired channel spac- ing environment. Clk Sft: Enable/disable the CPU Clock Shift This function is only used to move a spurious response “birdie” should it fall on a current frequency. Press the SPACE bar to toggle “yes” or “no.” NSQ Mode: Noise Squelch Mode This command selects the manner of setting of the Squelch threshold level. User =The squelch threshold level is fixed via the “NSQ Lv” parameter (NSQ Lv: 0 min. 255 max.). Prpgm =The squelch threshold level deter- mined via the dealer programming. Press the SPACE bar to select the desired NSQ Mode. NSQ Lv: Noise Squelch threshould level Use the 0 - 9 keys to enter the desired Squelch thresh- old level directly, and press the ENTER key. Available values are 0 (min.) 255 (max.). 12 Operating Manual Reprint Court Blip: Courtesy Blip When this parameter is set to “on,” this function causes the VXR-7000 to send out a “blip” on the portable/mobile radio is frequency each time the portable radio is unkeyed. This provides audible confirmation to the user that the VXR-7000 was able to receive the transmission from the portable. Press the SPACE bar to toggle “on” or “off.” Rev Bst: Reverse Burst. When this parameter is set to “on,” the CTCSS tone signals phase is inverted just before the repeater turns to receive. This allows the portable/mobile stations CTCSS Decoder to begin switching off, thus reducing the transi- tion time required. Press the SPACE bar to toggle “on” or “off.” DCS Typ: DCS Format This command is effective only when DCS is chosen for squelch control. A = “Normal” DCS B = “Inverted” (complement) DCS Press the SPACE bar to select the desired DCS Type. DDec Type: DCS Decoder Type This command selects the manner in which DCS is to be decoded. Fixed = Decodes only the type selected in above pa- rameter (DCS Typ: Normal or Inverted). Auto = Both types (Normal and Inverted) will be de- coded. Press the SPACE bar to select the desired DCS Decoder Mode. Multi Tone: Enable/disable Multi Tone Operation Press the SPACE bar to toggle Multi Tone Operation be- tween selections “yes” and “no.” Press the ENTER key to display the “MULTI TONE SELECT” window, from which you may select a CTCSS tone or DCS code; move the cursol to the appropriate field you using the ARROW key, then press the ENTER key to open the “TONE SELECT” or “CODE SELECT” window. Now select the desired CTCSS tone or DCS code using the AR- ROW key, then press the ENTER key again to accept the selected tone or code, or press the ESC key to cancel. You may set as many as 16 CTCSS tones and/or DCS codes. Note that, if you do not yet program a CTCSS tone or DCS code in the “MULTI TONE SELECT” window (when the “MULTI TONE SELECT” window data is not pro- grammed), press the SPACE bar to display the “MULTI TONE SELECT” window directly. CWID ANI/ENI: Select the Identifier mode Press the SPACE bar to toggle the selections “CW ID,” “ANI/ENI,” or “off.” To select this feature to the “CW ID” or “ANI/ENI,” the “CW ID” parameter must be en- abled via the dealer programming. Action Mode: Select the repeater operation mode Press the SPACE bar to toggle between “Duplex” opera- tion or “Simplex” operation. Tx Freq.: Edit Transmit Frequency Use the 0 - 9 keys to enter the desired channel fre- quency directly, and press the ENTER key. CTCSS Encoders: Toggle CTCSS Encoder ON/OFF, sets CTCSS Frequency Press the SPACE bar to toggle the CTCSS Encoder “on” or “off,” or press the ENTER key to display the “TONE SELECT” window, from which you may select a CTCSS frequency using the ARROW key; press ENTER again to accept the selected tone, or press the ESC key to cancel. DCS Encoders: Toggle DCS Encoder ON/OFF, sets DCS Code # Press the SPACE bar to toggle the DCS Encoder “on” or “off,” or press the ENTER key to display the “CODE SE- LECT” window, from which you may select a DCS code using the ARROW key; press ENTER again to accept the selected code, or press the ESC key to cancel. Base TOT: Enable/disable the Time-Out Timer while in the “BASE” station mode Press the SPACE bar to toggle the TOT feature selects “yes” and “no.” The TOT time is determined via dealer programming. Base Guard: Enable/disable the Base Guard Feature When this parameter is set to “yes,” the transmitter will be inhibited for a few seconds before the repeater (in the “BASE” station mode) turns to receive. The inh