Vertex Standard VX-210AU User manual

1
VX-210AU
VX-210AUVX-210AU
VX-210AU／
／／
／Type-A Alignment
Type-A AlignmentType-A Alignment
Type-A Alignment
The VX-210A has been carefully aligned at the factory for the specified performance
across the frequency range specified for each version. Re-alignment should therefore not
be necessary except in the event of component failure, or altering version type. All
component replacement and service should only be performed by an authorized Vertex
Standard representative, or the warranty policy may be void.
Required Test Equipment
Required Test EquipmentRequired Test Equipment
Required Test Equipment
Vertex Standard CT-42 Programming Cable with CE-45 Channel Programming
Diskette
RF Signal Generator with calibrated output level at 1GHz
Deviation Meter (Linear Detector)
AC Voltmeter
SINAD Meter
In-Line wattmeter with 5 % accuracy at 500 MHz
Regulated DC Power Supply adjustable from 4 to 10 V, 3 A
50ΩNon-reactive Dummy Load: 10 W at 500 MHz
Frequency Counter: ±0.2 ppm accuracy at 500 MHz
AF Signal Generator
DC Voltmeter: high impedance
Before beginning alignment, connect the transceiver and PC using the CT-42
Programming Cable, and run the CE-45 Channel Programming Diskette, then
download the EEPROM data from the transceiver to the computer.
Then store this data in a disk file so that it can be uploaded when alignment is finished.
You should find the corresponding data file on the computer disk for the transceiver
version you are aligning, containing channel settings for the high edge, middle and low
edge of the transceiver’s frequency range in channels 1, 2 and 3, respectively. Up-load
this file to the transceiver.
Low Band Edge (Channel 1): 400.000 MHz
Band Center (Channel 2): 415.000 MHz
High Band Edge (Channel 3): 430.000 MHz

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PLL & Transmitter
PLL & TransmitterPLL & Transmitter
PLL & Transmitter
Set up the test equipment as shown for transmitter alignment. Adjust the supply
voltage to 7.５V for all steps where not specified otherwise.
PLL VCV (Varactor Control Voltage)
Connect the DC voltmeter between TP03 on the chip side of the Main Unit and
ground.
Set the transceiver to CH 3 (high band edge), and adjust L1004 on the chip side of
the Main Unit for 3.6 V ± 0.1 V on the voltmeter.
Set the transceiver to CH 1 (low band edge), and confirm the low-end VCV is more
than 0.8 V while transmitting, and also while receiving.
PLL Reference Frequency
Set the transceiver to CH 2 (band center), key the transmitter and adjust TC1001
on the component side of the Main Unit, if necessary, so the frequency counter
displays the band center frequency ±100 Hz (for the version being aligned) when
transmitting.
Transmitter Output Power
Set the transceiver to CH 2 (band center), and select high power output.
Ensure that the supply voltage is precisely 7.5 V, then adjust VR1004 on the
component side of the Main Unit (while the PTT switch is pressed) for 5.0 W on the
wattmeter, and confirm that supply current remains below 2.0 A.
Modulation Level
Set the transceiver to CH 2 (band center), adjust the AF generator for 77 mV rms
output at 1 kHz to the MIC jack.
Press the PTT switch and adjust VR1002 on the component side of the Main Unit
for a deviation of ±4.2 kHz (for 25 kHz steps), or ±2.1 kHz (for 12.5 kHz steps).
Receiver
ReceiverReceiver
Receiver
Set up the test equipment as shown for receiver alignment.
Sensitivity
Set the transceiver to CH 3 (high band edge), and the RF signal generator tuned to
the same frequency, set the generator for ±3.0 kHz deviation with 1 kHz tone
modulation, and set the output level for 40 µV at the antenna jack.

3
Adjust VR1001 on the component side of the Main Unit for optimum SINAD, and
confirm that signal generator level should be better than –7 dBµ for 12 dB SINAD.
RSSI
Connect the DC voltmeter between TP43 on the component side of the Main Unit
and ground.
Set the transceiver to CH 2 (band center), and the RF signal generator tuned to the
same frequency, set the generator for ±3.0 kHz deviation with 1 kHz tone
moderation, and set the output level for 15 dBµ at the antenna jack.
Adjust VR1005 on the component side of the Main Unit for 0.7 V ± 0.1 V on the
voltmeter.