VISTEK V1636 User Manual Download Page 3

Vistek V1636 24-bit Audio Digital  
To Analog Converter 

 

Issue 4.0 

 

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  110

W

  digital  audio  channels,  Z

in

  =  110

W

  (or  75

W

 

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

 < 50

W

 (V1636) or Zout < 

18

W

 (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  (50

m

s  or  CCITT)  code  embedded in  the 

AES Channel Status.  

Summary of Contents for V1636

Page 1: ...V1636 24 bit Audio Digital To Analog Converter User Guide Issue 4 0 Pro Bel Ltd www pro bel com...

Page 2: ...ion 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 Para...

Page 3: ...nnels 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 a...

Page 4: ...ls 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 co...

Page 5: ...AES External AES source AES3 AES3id digital input for channelpair A R Do Not Connect Reserved B 3 IN L AES External AES source AES3 AES3id digital input for channelpair B R Do Not Connect Reserved A 4...

Page 6: ...n Signal Pin Signal 1 AES A in 2 No connect 9 AES A in 3 GND 10 No connect 4 AES Ref in 11 GND 5 AES B in 12 AES Ref in 6 No connect 13 AES B in 7 GND 14 No connect 8 GND 15 GND D15F Output connector...

Page 7: ...right switch is for channelpair A L and R and the left switch is for channelpair B L and R The location of the MOL switches is shown on the figure below These switches adjust the analog MOL correspon...

Page 8: ...s on board power supply is delivering voltage The yellow REM LED is lit whenever the unit is accessed by the Rack Controller for the DART remote system REM V V1636 Audio DAC Remote Control Access and...

Page 9: ...e or more parameters Conceptually the procedure is not unlike setting a digital alarm clock or watch Panel adjustment pages can only be invoked if the REM LOCAL switch on the panel is set to LOCAL Pre...

Page 10: ...Adjustment modes on the two pages LED indicator Page 0 Page 1 Parameter Adjust range Parameter Adjust range Delay Delay 0ms to 1250s Test Tone A B Off A B on A B Swap A B Swap Normal Swapped 3 2 2 De...

Page 11: ...put channelpairs are transposed so that AES A converts to BL BR and AES B converts to AL AR analog output pairs respectively the A B Swap parameter is indicated on the character display as A b 3 2 4 T...

Page 12: ...General The V1636 is a Class 4 DART module which has a serial EEPROM for reading and writing card details through the DARTbus in the same manner as other V1600 range cards In addition the unit has se...

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