Vertex VXR-5000 - TX Output Power; RX Unit

Vertex VXR-5000

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ator

pad),

key

the

transmitter

and

adjust

X3001, so

that

the

TX

frequency

is

within

±150

Hz

of

the

programmed

TX

frequency.

RX

Unit

Set

up

the

test

equipment

as

shown

here

for receiver alignment.

VCV Adjustment

o Select

the

highest

receive

frequency

then

connect a DC

voltmeter

between

the VCV

land

and

GND

on

the

RX

Unit. Adjust

TC550l

on

the

RX

VCO

Unit

for

7.5

VDC.

Sensitivity Adjust

o Inject a 0 dBu signal

modulated

with

1

kHz

tone

at

20

mV RMS

and

5

kHz

deviation to

the

RX

ANT

connector.

o

Adjust

L4002, L4003, L4005, L4011, L4013

and

L4015 for

maximum

SINAD indica-

tion. Confirm

that

the

12 SINAD level does

not

exceed

.35

11

V

on

the

low,

mid

and

high

receive frequencies.

o Increase SG

output

to +40 dBu, then adjust

T4001

and

T4002 for

minimum

distortion

level

indicated

on

the SINAD meter.

T4001

-~

T4002

L4005

L4002

-

-------=

VXR-5000

TX

Output

Po

wer

o

Connect

a

dummy

load

wattmeter

to the

TX ANT

connector

.

Full

Power

Set

o C

onnect

the

VPL-1

connection

cable to

J2008

on

CNTL

Unit

2,

then

load

the

CE-8

programming

software. Recall

the

align-

ment

adjustment

file,

and

press

the

return

key.

Key the

repeater

and

press

the

func-

tion key

indicated

in

the

program

for

an

indication of

25

watts

(±

0.5 watt)

on

the

wattmeter.

Low

Power

Set

o Repeat

the

above

procedure

for

an

indica-

tion of 12.5 Watts

(±

0.5 watts)

on

the

watt-

meter.

o Press

the

F10 key to exit

the

adjustment

mode,

then

press

F4 to

save

the

settings to

memory. Disconnect the

VPL-1 cable.

Te5501

~

-

L4011

L4003

--

~~~~~~~~

====::~:::3

L4015

L4013

RX Unit Alignment Points

Instruction

Manuall

4-3

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