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3.2.6
A test tone of 997Hz may be invoked on both channels of either or both A and B channelpairs
and the present setting may be seen on the character display as a number combination when
Page 1 Panel Adjustment mode has been entered and Test Tone selected as a parameter.
The table below explains the available Test Tone selections
0 0
1 0
0 1
1 1
The test tone is the same frequency (± 1 Hz) for all available sample rates, but the output
amplitude depends on the V1635V variant as follows:
·
·
3.2.7
An additional delay of up to 1ms may be added to the delay selected in 3.2.2 by means of the
Fine Delay Control. This control adds delay in increments of one audio sample period, from 0
to 47 samples. The absolute time delay will depend on the sample rate - at 48kHz it is
20.83ms. This mode is useful for setting up a multichannel audio program (such as Dolby) so
that all the constituent signals (which may be subject to different paths) are in phase.
The panel display for the Fine Delay control is dxx, where xx is a number-of-samples delay
effected.
3.2.8
Gain on each of the four inputs A1, A2, B1, B2 may be varied in the range –16dB..+15dB.
The gains are applied in the signal chain before the A-B switch and are invoked 'on the fly'.
The module is shipped with 0dB gains set on all inputs. The present setting of gain may be
seen on the character display as a deciBel number when Page 2 Panel Adjustment mode has
been entered and Input Gain A1 through Input Gain B2 selected as a parameter. Using the
DART interface, remote control software can be tailored to apply 'ganged pot' gains if desired.
14
Vistek V1635V-100 24-bit AES Audio
Test Tone
Display
No test tones selected
Test tone on channelpair A only
Test tone on channelpair B only
Test tone on both channelpairs
On cards with digital outputs, the test tone is -18dBFS.
On cards with analog outputs the test tone is 0dBu.
Fine Delay
Input Gain
Variable Delay Module
Test Tones
HU-V1635V-100
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