Vertex Standard VX-210AU User manual

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

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.

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.

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