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V1635V-100

24-bit AES Audio Variable Delay
Module

Includes: V1635VA-100, V1635VD-100, variants with fine
delay control

User Guide

Issue: 8.0

© Pro-Bel Ltd

www.pro-bel.com

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Summary of Contents for V1635V

Page 1: ...V1635V 100 24 bit AES Audio Variable Delay Module Includes V1635VA 100 V1635VD 100 variants with fine delay control User Guide Issue 8 0 Pro Bel Ltd www pro bel com ...

Page 2: ...tion 10 3 1 Front Panel Controls and Indicators 10 3 1 1 Remote Control Access and Power Indicators 10 3 1 2 Sampling Rate Indicators 10 3 1 3 Reference Indicators 11 3 1 4 Character Display 11 3 1 5 Parameter Selection Controls 11 3 2 Adjustment of Operating Parameters 11 3 2 1 General 11 3 2 2 Delay Adjustment 12 3 2 3 Reference Setting 12 3 2 4 Sample Rate Select 13 3 2 5 A B Swap 13 3 2 6 Test...

Page 3: ... or AES3id 75W unbalanced with special rear module Sample rates of 32 96kHz are supported The two AES inputs need not be the same sampling frequency as each other or the output since the unit performs asynchronous sampling rate conversion ANALOG OPTION 4 x Analog differential quasi balanced outputs with Zin 20kW Max input level 28dBu 0dBFS Input sensitivity adjustable by on card switches from 14dB...

Page 4: ...ntrolled Test Tone of 997Hz at 18dBFS may be applied to either or both A or B channelpair analog outputs Panel Selectable Reference Source can be external Video at 48kHz external AES reference at 32kHz or 48kHz or internal free running crystal oscillator at any sample rate Either of the AES input channels can also be used as an AES reference source at 32kHz or 48kHz Panel Selectable Sample rate ca...

Page 5: ...gital certain connections are reserved Do not connect anything to these connections 4 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 5 On units with analog output option neither or output should be grounded 6 The TRACK input accepts a pulsetrain of active high TTL level pulses at either NTSC or PAL frame r...

Page 6: ...es on Table 2 2 1 No connect means do not connect this pin to anything 2 For modules equipped with AES outputs both pairs of outputs are available on D type rear panels These are denoted asAESA1 AESA2 etc 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 ...

Page 7: ...rnal Analog source L Analog input for channelpair B R Do Not Connect Reserved External Analog source R Analog input for channelpair B A 4 OUT L AES V1635 AES3 AES3id digital output for channelpair A V1635 L Analog output for channelpair A R Do not Connect Reserved V1635 R Analog output for channelpair A B 4 OUT L AES V1635 AES3 AES3id digital output for channelpair B V1635 L Analog output for chan...

Page 8: ... 12 GND GND 6 B right out No connect 13 B left out AES B1 out 7 GND AES B2 out 14 B right out No connect 8 GND GND 15 GND AES B2 out 2 2 Output Wordlength Setting The digital audio output wordlength is normally 24 bits It may be set to 20 bits by closing jumper LK1 2 3 Video Reference Input Impedance The video reference input impedance is 75W when jumper LK3 is closed It is high impedance when jum...

Page 9: ... adjustable in 1dB steps from 14dBu to 28dBu MIL MOL setting versus switch position for both analog inputs and outputs is shown in the table below Switch setting MIL MOL for 0dBFS 0 14 1 15 2 16 3 17 4 18 5 19 6 20 7 21 8 22 9 23 A 24 B 25 C 26 D 27 E 28 F reserved The figure below shows location of all jumpers and switches that may be fitted across the range of V1635V variants Front Panel Rear Co...

Page 10: ...ay 7 7 7 AES Video Ref SPS Ref Reference indicators A B 3 1 1 Remote Control Access and Power Indicators The green V LED is lit when the unit 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 3 1 2 Sampling Rate Indicators These LEDs indicate the sampling rate of the AES digital outputs as selecte...

Page 11: ...d if the REM LOCAL switch on the panel is set to LOCAL Pressing the SELECT button on its own invokes the panel adjustment modes of Page 0 Pressing the SELECT button while holding in the p button invokes the panel adjustment modes of Page 1 The p button is analogous to a SHIFT key on a computer keyboard when selecting pages of adjustment modes Pressing the SELECT button while holding in the q butto...

Page 12: ... to all four analog channels as a group and the present setting may be seen on the character display as a number when Page 0 Panel Adjustment mode has been entered and Delay selected as a parameter By Panel Selection the delay value may be adjusted from 0ms to 1 25 seconds Adjustment is in 1ms steps from 0 to 1250ms From 0 to 999ms the delay value is displayed in ms and from 1 0s upwards it is dis...

Page 13: ...been entered and SPS selected as a parameter The selectable options will depend on the V1635V variant as follows On cards with analog outputs the SPS refers to the internal sample rate and is fixed at 48kHz On cards with digital outputs the SPS refers to the internal and output sample rate and may be set to 32kHz 44 1kHz or 48kHz 3 2 5 A B Swap A transposition of AES A and AES B inputs may be invo...

Page 14: ... 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 Input Gain Gain on each of the fo...

Page 15: ...card details through the DARTbus in the same manner as other V1600 range cards In addition the unit has several read and write registers details of which may be found in document scsm1635 doc Settings of operating parameters made via the DART interface are not stored in non volatile memory by the V1635 and NV memory in the remote control system is used for storing these settings ...

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