FCC ID: Kb6VX-400V— MANUAL XV-400 Operating Manual.doc XV-400 OPERATING MANUAL BEFORE YOU BEGIN Battery Installation and Removal Refer to the illustration below showing the rear panel of the XV-400 and its battery pack. o To install the battery, align the mounting slots on the upper side of the battery nest of the rear panel with the corresponding lugs of the battery, then insert the battery into the battery nest, then close the latch until it locks in place with a “Click.
XV-400 Operating Manual.doc Operation Quick Start 0 To turn the radio on, press and hold the orange PWR button for 2 second. Pull and turn the top panel's CH selector knob to choose the desired operating channel. Rotate the top panel's VOL knob to set the volume level. If no signal is present, press the MONITOR button (the middle button on the left side); background noise will now be heard, and you may use this to set the VOL knob for the desired audio level.
pp SAT Hg FCC ID: K66VX-400VALIGNMENT K66VX-400V Alignment doc VX-400V Alignment Introduction The XV-400 is carefully aligned at the factory for the specified performance across the frequency range specified for each version. Realignment should therefore not be necessary except in the event of a component failure, or altering version type. All component replacement and service should be performed only by an authorized Yates representative, or the warranty policy may be void.
KBBVX-400V Alignment.doc use of improper test equipment is not covered under the warranty policy. While most steps do not require all of the equipment listed, the interactions of some adjustments may require that more complex adjustments be performed 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 follow all of the steps in a section in the order presented.
KBBEVX-400V Alignment.doc Whenever possible, alignments should be made with oscillator shields and circuit boards firmly affixed in place. Also, the test equipment must be thoroughly warmed up before beginning Note: Signal levels in dB referred to in the alignment procedure are based on bedbug EMF = 1uV. Setup the test equipment as shown for transceiver alignment, apply 7.5V DC power to the transceiver. Refer to the drawings above for Alignment Points.
KE6VX-400V Alignment.doc program running on PC Alignment of PLL Reference Frequency Set up the test equipment as shown above for transmitter alignment. Hold the supply voltage constant 7.5V fer all steps. Select the MID channel and key the transmitter. Adjust TC1001 on the back of the body, if necessary, so the counter frequency is within 100Hz of the channel center frequency for the transceiver version. Also verify that the HIGH and LOW channels are also within tolerance.
KBEVX-400V Alignment.doc Boot the tool Change directly and input in command line, " align [enter] ”, and boot the alignment tool. Enter to the alignment mode To enter the alignment mode, turn off the power of the transceiver, and press [F10] to start a countdown 10 sec. You have to power on the transceiver while countdown. If entry succeed, the transceiver generate a beep " p-p-p" Action of the switches When the transceiver is in alignment mode, the action of PTT, MON. Dial is ignored.
KB8VX-400V Nonalignment changed up/down by [1] ]. and fixed by input [R] at appropriate value. Ix: {T] Tx power [0] High This parameter is to align Tx High power { 5W ). Select the highest frequency channel in alignment range, and If you input [0], start Tx. SIL Align the L1 power ( 100mW ) similar method to " High" “12112 Align the L1 power ( TW) similar method to " High ". -13]L3 Align the LT power ( 2.5W ) similar method to " High *. [D] maximum dev.
KB6VX-400V Alignment.doc [N] SQL This data is sampled noise level for Noise Squelch. [Z) Tight This parameter is to align the noise level in squelch level 12 (channel parameter). Set the SG output level to -Debby EMF ( 0.35pV ), and obey the message. [X] Threshold This parameter is to align the noise level in squelch level 1. Set the SG output level to -standby EMF (0.125uV ), and obey the message. [1 RSS! [Z| RSI SQL This parameter is the RSS! level for RSS! squelch.
KBEVX-400V Alignment.doc [X] max dev. This parameter is to trim maximum deviation in displayed channel. [C] sub audio dev. This parameter is to trim sub audio deviation in displayed channel. Rx: [U] manual tuning This parameter is to tune displayed channel by manual. [8] squelch level This parameter is to set the squelch level. This is equivalent to a squelch volume of the popular transceiver.
VX-400V Circuit Description 2. Squelch Control The squelch circuitry consists of a noise amplifier & band-pass filter within Q1040, and noise detector D1035 (DA221). When no carrier received, noise at the output of the detector stage in Q1040 is amplified and band-pass filtered by the noise amplifier section of Q1040 and the network between pins 7 and 8, and then rectified by ID 1035. The resulting DC squelch control voltage is passed to pin 75 of the microprocessor QL033.
VX-400V Circuit Description 3. Transmit Signal Path Speech input from the microphone is amplified in Q1009 (NJM2902V) after there is a filter and is sent to Optional Unit. The audio which returned from Optional Unit passes Q1009 (NJM2902V) to be per-emphasized. The processed audio is then mixed with a CSS tone generated by Q1047 (AK2341) and delivered to D1027 (15S314) for frequency modulating the PLL carrier up to = kHz from the modulated carrier at the transmitting frequency.
VX-400V Circuit Description 3.3 Spurious Suppression Generation of spurious products by the transmitter is minimized by the fundamental carrier frequency being equal to final transmitting frequency, modulated directly in the transmit VCO. Additional harmonic suppression is provided by a low-pass filter consisting of L1001, L1002 & L1003 and C1006, C1007, C1014, C1022, C1027 & C1038, resulting in more than 60 dB of harmonic suppression prior to delivery to the antenna. 4 YATES MUSE Co.Ltd.
VX-400V Circuit Description 4. PLL Frequency Synthesizer PLL circuitry on the Main Unit consists of VCO Q1038 (28C2531C8/CY) and VCO buffers Q1039 (2SC2531C8/CY, QL034 (25C4245) ; PLL subsystem IC QL025 {MC145182DT), which contains a reference divider, serial-to-parallel data latch, programmable divider, phase comparative, charge pump, and a power saver circuit. Stability is maintained by a regulated 3 V supply via Q1023 (28B1132Q) to Q1022, ate with the 21.
VX-400V Circuit Description speech audio applied to D1027 (188314), as described previously. Receive and transmit buses select which VCO is made active by Q1031 (DTC144EE). When the power saving feature is active, the microprocessor periodically signals the PHALLIC to conserve power and shortens lock-up time.
VX-400V Circuit Description 5. Miscellaneous Circuits 5-1 Push-To-Talk Transmit Activation The PTT switch on the microphone is connected to pin 3 of microprocessor Q1033, so that when the PTT switch is closed, pin 54 of Q1033 goes high. This signals the microprocessor to activate the TX / RX controller Q1005 (UMG2N), which then disables the receiver by disabling the 5 V supply bus at Q1050 (DTA143EU) to the front-end, FM IF subsystem IC Q1040 and receiver VCO circuitry.