VISTEK V1636 User Manual
V1636
24-bit Audio Digital To Analog
Converter
User Guide
Issue: 4.0
© Pro-Bel Ltd
www.pro-bel.com
Vistek V1636 24-bit Audio Digital
To Analog Converter
2 HU-V1636
Contents
1 Description 3
2 Installation 4
2.1 Rear Panel Connections 4
2.2 Maximum Output Level Adjustment 7
3 Operation 8
3.1 Front Panel Controls and Indicators 8
3.1.1 Remote Control Access and Power Indicators 8
3.1.2 Sampling Rate Indicators 9
3.1.3 Input Status Indicators 9
3.1.4 Character Display 9
3.1.5 Parameter Selection Controls 9
3.2 Adjustment of Operating Parameters 9
3.2.1 General 9
3.2.2 Delay Adjustment 10
3.2.3 A/B Swap 11
3.2.4 Test Tone 11
4 Dart Interface 12
4.1 General 12
Vistek V1636 24-bit Audio Digital
To Analog Converter
Issue 4.0 3
1 Description
The V1636 is a broadcast quality 24-bit audio digital to analog converter which forms part of
the Vistek V1600 range of interface products. It is a 3U high card which is fitted into either a
V1601 or V1603 rack, from which it receives its power. A passive rear module with screw
terminal connections, is required for all signal interconnections.
The unit accepts two AES-3 digital stereo audio inputs and converts these signals to 4
differential mono analog outputs in two pairs. The V1636 is fully compatible with the Vistek
DART remote system, allowing status information to be read and control settings invoked by a
DART compatible rack controller.
INPUTS:
· 2 x AES3-1992 balanced 110W digital audio channels, Zin = 110W (or 75W
unbalanced with special rear module).
· Sampling frequencies of 32-96kHz are supported.
· AES inputs A and B can be different sample frequencies - asynchronous sample
rate conversion to an internal sample rate of 48kHz is performed on the inputs.
OUTPUTS:
· 4 x Analog differential quasi-balanced outputs with Z
out
< 50W (V1636) or Zout <
18W (V1636ARD)
· Max Output level: 0dBFS = +28dBu. Output level adjustable by on-card switches
from 0dBFS = +14dBu to 0dBFS=+28dBu in 1dB steps.
FUNCTIONS:
· Panel Selectable/DART controlled Delay from 0ms to 1250ms may be applied to
the outputs. All outputs are subject to the same delay value.
· Panel Selectable/DART controlled A/B Swap transposes the AES input streams.
· Panel Selectable/DART controlled Test Tone of 997Hz at -18dBu may be applied
to either or both A or B channelpair analog outputs
· Control source may be Panel switches (LOCAL mode) or DART (REMOTE mode)
· The V1636 responds to de-emphasis (50ms or CCITT) code embedded in the
AES Channel Status.
Vistek V1636 24-bit Audio Digital
To Analog Converter
4 HU-V1636
2 Installation
2.1 Rear Panel Connections
The standard 3U Screw terminal rear panel is shown below. Other 3U and 1U panel variants
with screw terminal and/or BNC connectors are similarly marked. Table 2.1.1 describes the
connections to the unit when these panels are used.
Notes on Table 2.1.1:
1. Certain connections are reserved. Do not connect anything to these
connections.
2. Grounds/screens (S) are connected to chassis on all outputs and inputs and
should be connected to all cable screens to minimize hum and noise.
3. Neither (+ or -) analog output should be grounded.
Table 2.1.2 describes connections to the unit when D-type panels are used.
Notes on Table 2.1.2:
No connect means do not connect this pin to anything.
L/AES
R
+
-
S
-
+
+
S
-
+
-
S
-
+
+
-
S
-
+
+
-
S
-
+
L/AES
R
L/AES
R
L/AES
R
AES
REF.
A
B
A
B
TRACK
VIDEO
REF
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