Vector VN8912 Handbuch PDF herunterladen (Seite 31)

Vector Product Manual

TEST

CONTACT CLOSURES

The TEST function allows the user to test the encoder and decoder portion of

the Vector and to check out audio levels by looping the input audio back

through to the output. It also gives the user the ability to listen to audio at

various data rates. If you are not familiar with the audio connections on the

Vector, read more about these on pages 18-21 of this manual.

To initiate the TEST function, first feed audio into the Vector at a typical level

and adjust the appropriate INPUT control until the Vector VU meter reads

correctly. (See page 20.) Connect the Vector output to your monitoring

facility. (See page 19 for the Rackmount Vector and pages 20-21 for the

Portable Vector.) On the Portable Vector, turn the LOCAL level control all the

way down.

To enable the TEST function, press MENU from the STATUS display and TEST.

Select a data rate by pressing the corresponding number on the keypad.

When the READY LED comes on, adjust the RETURN level control until you have

a comfortable level in your headphone and/or monitor. To exit TEST, press

the CANCEL softkey.

The contact closure labeled READY is available through the 1/8" mini jack on

the rear panel of the Vector will remain closed as long as the green READY

light is illuminated on the front panel .. i.e. as long as the call is connected.

If you wish to provide an indication to the other Vector user at any time

during the audio transfer or activate a device remotely through the far end

Vector, simply press the CC key in the lower right position on the keypad.

While this key is pressed, two things will occur:

1) The CC LED to the right of the LCD display will illuminate.

2) A contact closure will be made silently across the CC terminal on

the remote end. This is a momentary dry closure available through the

1/8" mini jack on the rear panel of the Vector, marked CC.

The contact closures will have no effect on audio quality.

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Vector VN8912 Handbuch Seite 31