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Installation and operation, cont’d, Top panel features – Extron Electronics VTG 400D_400 DVI User Guide User Manual

Page 16

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Installation and Operation, cont’d

VTG 400D/400 DVI • Installation and Operation

2-6

Top Panel Features

AUDIO

SIGNAL

TYPE

LEVEL

POWER

FREQUENCY

VIDEO

TEST

PATTERN

RANGE

SELECT

RATE

MENU

QUICK

SELECT

SCOPE-TRIGGER

1

2

3

CURSOR

SHAPE

HIDE

4

NEXT

VTG 400

VIDEO & AUDIO TEST GENERATOR

RES: NTSC 720X485

FRQ:15.70kHz 60/30Hz

SIG:Pink noise FRQ:N/A

LEV:-18dBu 97.6mV

Checkerboard 100%

6

7

5

8

1

2

4

3

12

11

9

10

13

VTG 400D/400 DVI top panel features

1

Audio signal type (Signal Type) —

Press this button to select from among

seven different audio test signals: pink noise, white noise, sine wave,

square wave, frequency sweep, polarity test, and sine burst. The signal type

is indicated on the LCD display. See Selecting audio signals later in this

chapter.

2

Audio output signal level adjustment (Level)

— Press the button to

increase the RMS signal level and the button to decrease the RMS signal

level. See the Audio Setup menu section in this chapter to specify either dBu

or dBV as the signal level unit. The level setting is indicated on the LCD

display.

The audio output level settings for all audio signal types (see

1

above) are

retained after the VTG is powered off. The default setting is -28 dBu for

polarity test and -10 dBu for all other signal types.

If the Level buttons are held down for more than one second, the VTG
automatically advances through the level adjustment in the direction
indicated by the button.

3

Audio frequency adjustment (Frequency) —

When the audio signal type

is either sine wave, square wave, or sine burst (see

1

above), the audio

frequency can be adjusted from 20 Hz to 20 kHz (sine) or 20 Hz to 5 kHz

(square). Press the button to increase the frequency and the button to

decrease the frequency. The adjustment is in 1/12 octave steps. See Setting
the audio frequency

later in this chapter. The audio frequency is indicated on

the LCD display.