User`s manual

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ULSAR

Operation

Page 5-11

5.5 MODULATION

MOD: VAGC=OFF

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 90%

MODULATION

AUDIO

VIDEO

Indicates the modulation

depth reference value.

MOD: = 90% VAGC=WHT

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 90%

MOD: = 90% VAGC=SYN

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 90%

AUDIO DEV:

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 030kHz

Indicates the measured

modulation depth.

Indicates the frequency

deviation reference value.

Indicates the measured

frequency deviation.

DEV 2 -------------------------------- 030kHz

DEV 1 -------------------------------- 030kHz

In case of stereo

sound.

5.5.1 Video

The modulation depth can be adjusted in this submenu.

•

In case the VAGC is off

Change the modulation depth by pressing the

UP/DOWN arrows. The little black rectangle on the scale

indicates a modulation depth of 90%. The modulation depth is constantly measured while the result

is displayed on the right part of the screen. The vertical line on the scale is an indication for this

measured value. While pressing the arrows, the black rectangle disappears and the scale is now an

indication for the total available control range.

The white limiter is active if the letter ‘W’ is in front of the modulation depth value.

•

In case the VAGC is on

Change the modulation depth by pressing the

UP/DOWN arrows. The video AGC will control the gain

to the desired modulation depth. The first line of the display shows the desired modulation depth

while the measured value is shown on the right part of the display and also indicated by the vertical

line on the scale. After AGC autoranging, the vertical line shoud be on top of the black rectangle.

5.5.2 Audio

The frequency deviation is indicated on this display. The deviation can be changed with the UP and

DOWN arrow. The black rectangle is an indication of the reference value of 50 kHz. The vertical line on

the scale is an indication of the measured value, which is also shown on the display. While pushing the

arrows, the black rectangle disappears, the horizontal line is now an indication of the total control range.