V6402, V6404, V6406,V6408
and V6418 HD converters
6
Issue 6
The
V6406 HD Up Converter
takes an SD input signal and converts it to a High Definition (HD) output at
the same frame rate as the input. The V6406’s 3 dimensional, motion adaptive filtering offers far superior
conversion compared with the V6408’s 2 dimensional algorithm. While the unit handles all the interlacing,
filtering and scaling required, it does not change the frame rate. Therefore, both the input and output
standards must have the same frame rate. The operator can select between different aspect ratios (e.g.
anamorphic, pillarbox, centre-cutout). If the module comes with the Audio Handling (AH) option fitted,
embedded Audio information will be retained by de-embedding it in the SD domain, and re-embedding it in
the HD domain. Available options for the V6406 are: VP, SY, FD, CP and AH.
The
V6408 HD Cross Converter
operates within the High Definition domain and in general converts
between the interlaced and progressively scanned formats (720p
↔
1080i). The unit automatically detects
the input signal standard, but the operator must select the output standard from a list of supported
standards. Furthermore, the V6408 can perform good quality up-conversions from SD to HD, with a
choice of aspect ratios (e.g. anamorphic, pillarbox, centre-cutout). For superior performance, broadcast
quality up-conversions, please consider using Vistek's V6406 HD Up Converter. For all up- and cross-
conversions, embedded Audio information will be retained if the module comes with the Audio Handling
(AH) option fitted. Available options for the V6408 are: VP, SY, FD, CP and AH.
The
V6418 HD Converter
integrates the functionality of the V6404 Down Converter and the V6408
Cross/Up Converter modules, with an additional Short Delay (< 1 ms) Down Conversion mode for
monitoring purposes. The unit automatically detects the input signal standard, but the operator must select
the output standard from a list of supported standards, or select the up/down operation mode. The V6418
performs the required up-, down- or cross-conversion according to the input/output standards combination.
If the module comes with the Audio Handling (AH) option fitted, embedded Audio information will be
retained by de-embedding it in the input domain, and re-embedding it in the output domain. Available
options for the V6418 are: VP, SY, FD, CP and AH. When using Short Delay Down Conversion mode, only
the VP, CP and AH options are available. Also the V6302/AP Advanced Audio Processor can not be
utilised in Short Delay Down Conversion mode.
All units have two independent inputs, which can be selected either on the front panel or remotely via
Vistek's control interface 'DART'. They also have a fully re-clocked and buffered output, which is after the
input signal selection. Generally it is recommended to terminate unused input BNCs in order to improve
the unit’s noise susceptibility.
The reference input has two BNCs, so a passive loop-through is available. The reference can be either a
conventional Black & Burst signal (sometimes known as bi-level sync) or a tri-level sync, which is a newer
signal specifically for synchronising HD signals. The Frame Synchroniser (or any other module with the
'SY' option enabled) will automatically detect which type is being used and adapt accordingly. A 75
Ω
reference termination can be selected using a switch on the I/O Daughter Board.
Modules with a Frame Synchroniser, i.e. the V6402 or V6404/06/08/18 with the SY option fitted, come with
a tracking delay output on a BNC which can be used in connection with a 3
rd
party Audio Processor. If a
V64xx is used in combination with Vistek's V6302 Advanced Audio Processor and a dedicated double-
width rear panel, the tracking delay information will be passed internally from the Frame Synchroniser to
the Audio Processor.
Common for all modules are two (identical) Output BNCs, capable of driving either SD or HD SDI.
There is a versatile front panel with an alphanumeric display, which lets the operator set up a large
number of parameters and read the internal status of the unit. The front panel operates in the same way
as many of the more complex units in the range.
