VISTEK V1642 Installation And Operation Manual

17 February, 2005 V1642OM.DOC Page 1 of 9

V1642

SDI PROCESSING AMPLIFIER

INSTALLATION and OPERATION

© Vistek Electronics Ltd

Filename: V1642om.doc
Issue : 2
Date: March 2001

VISTEK Electronics Ltd
Wessex Rd
Bourne End
Buckinghamshire, SL8 5DT
ENGLAND

Tel. [phone]
Fax. [phone]
Web: www.vistek.tv

Page 2 of 9 V1642OM.DOC 17 February, 2005

SDI PROCESSING AMPLIFIER

INSTALLATION AND OPERATION

1. DESCRIPTION

The V1642 is an SDI video signal processor 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 gets its
power and control. A passive rear module, 16VR1D or 16VR3D, is required for all signal
interconnections.

The unit is fully dual standard for both 625/50 and 525/60 D1 signals. It automatically detects the input
standard and operates accordingly.

The processing functions available are similar to those found on a traditional analogue processing
amplifier which might be used on the input to a studio area, or possibly on the output of a mixer. The
primary controls are:

Video Gain
Chrominance Gain
Black Level
Hue Shift

In addition to these there are some secondary controls:

De-Hanover Bar
Hard/Soft Clip
Dynamic Rounding
Bypass

The V1642 has a Fade to Black function which can be triggered from a remote control system, or by a
contact closure. The duration is fixed at about half a second. The video is returned to its pre-fade, but
adjusted setting on release of the contact closure.

In common with all Vistek V1600 modular units there is a local control panel, which lets the user to
adjust most of the controls. Since this unit is used in operational areas and may need regular
adjustment of the parameters two remote control systems have been included available. DART is the
general purpose control architecture supplied by Vistek and other manufacturers, and enables full
control and monitoring of this and all other V1600 units. Some Vistek units, including this V1642, also
include a simple RS485 protocol which is included as an Appendix to this manual. This protocol can be
driven from any general purpose PC of modest capability with a suitable interface. Vistek can provide a
programme for controlling any of its modules which use this protocol. At the time of writing these
modules are:

V1642 SDI Proc. Amp
V1645 Noise Reducer
V1647 Aspect Ratio Converter

.

1 March, 2005 V1642OM.DOC Page 3 of 9

2. INSTALLATION

2.1 REAR PANEL CONNECTIONS

The rear module to be used with the V1642 is the same as that used with the V1645 Noise Reducer and
V1647 Aspect Ratio Converter. Some early units were delivered with rear modules that did not have a
D-type connector for GPI, in which case the Fade to Black input used two lower BNC connectors. Both
types of rear connector are shown below.

SD

(IN)

SD 1

(OUT)

SD 2

(OUT)

SD 3

(OUT)

RS485GPI

SD

(IN)

SD 1

(OUT)

SD 2

(OUT)

SD 3

(OUT)

RS485

5

6

SDI Input

SDI Loop O/P 1
SDI Loop O/P 2
SDI Loop O/P 3

Fade to Black

RS485 Remote Control

STANDARD 3U REAR EARLY VERSIONS

2.2 INTERFACING

SIGNAL COMMENTS

Power 4.5W Supplied from rack
SDI I/P BNC Video to SMPTE 259M

Max cable length >200m

SDI O/P 1, 2, 3 BNC Video to SMPTE 259M. Drive cable length up to 200m
RS485

9 way D type RS485 Remote Control. See below.

Fade to Black

9 way D type GPI control of Fade to Black. See below.

RS232

RS485

1
2

3
4
5

6
7

8
9

1
2

3
4
5

6
7

8
9

RX
TX

GND

TX B
RX A

TX A
RX B

GND

GPI

1
2

3
4
5

6
7

8
9

GND

FtoB

On the GPI connector some pins may carry other signals when used with compatible units. Therefore
only use pins 6 and 9 for the Fade to Black Function.