GRASS VALLEY SMS 8301A-K User manual

SMS 8301A-K
KEY TO SERIAL COMPONENT DIGITAL CONVERTER
Instruction Manual
TP3507-01
FIRST PRINTNG: AUGUST 1993
REVISED PRINTNG: APRIL 1998

Contacting Grass Valley Group
Copyright © Grass Valley Group. All rights reserved.
This document may not be copied, in whole or in part, or otherwise reproduced,
except as specifically permitted under U.S. copyright law, without the prior written
consent of Grass Valley Group, P.O. Box 599000, Nevada City, CA 95959-7900 USA.
GRASS VALLEY GROUP is a registered trademark and Grass Valley is a trademark of
Grass Valley Group. All registered trademarks and trademarks are property of their
respective holders. Grass Valley Group products are covered by U.S. and foreign pat-
ents, issued and pending. Product options and specifications subject to change without
notice. The information in this manual is furnished for informational use only, is sub-
ject to change without notice, and should not be construed as a commitment by Grass
Valley Group. Grass Valley Group assumes no responsibility or liability for any errors
or inaccuracies that may appear in this publication.
Region Voice Fax Address Web Site
North America [phone]
530-478-4148 [phone] Grass Valley Group P.O. Box 599000
Nevada City, CA 95959-7900 USA
www.grassvalleygroup.com
Pacific Operations [phone]
Support: 852-2585-6579 [phone]
U.K., Europe, Asia,
Middle East [phone] [phone]
France [phone]
Germany [phone] [phone]

iii
Important Safeguards and Notices
Symbols and Their Meanings in This Manual . . . . . . . . . . . . . . . . . . . . . . vii
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Cautions ...................................................... x
Power Supply Cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi
North American Power Supply Cord . . . . . . . . . . . . . . . . . . . . . . . . . . xi
International Power Supply Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
EMC Regulatory Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
Federal Communications Commission (FCC) Part 15 Information . xii
89/336/EEC EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
SMS 8301A-K Key to Serial Component Digital Converter
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Timing and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Module Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Vertical Blanking Width Selection . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8/10 Bit Output Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Internal/External Sync Selection . . . . . . . . . . . . . . . . . . . . . . . . . . 11
External Sync Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Rear Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Remote . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Front Panel Controls/Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Contents

iv
Contents
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Input Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Black Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Gain Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Ref Present LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Module Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Alignment Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Free Run Frequency Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Frequency Response Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Key Video In H Phase Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Index

v
Contents
List of Illustrations
Figure 1. 8301A-K Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 2. JP1 Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 3. JP101 Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4. JP103 Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 5. JP900 Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. 8301A-K Rear Connector Overlay . . . . . . . . . . . . . . . . . 14
Figure 7. 8301A-K Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8. 8301A-K Calibration Waveform . . . . . . . . . . . . . . . . . . . 18
Figure 9. JP103 Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 10. JP103 and JP200 Shorting Jumpers . . . . . . . . . . . . . . . . . 23

vi
Contents
List of Tables
Table 1. Format Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

vii
Important Safeguards and Notices
Information on the following pages provides important safety
guidelines for both Operator and Service Personnel. Specific
warnings and cautions will be found throughout the manual
where they apply, but may not appear here. Please read and
follow the important safety information, noting especially those
instructions related to risk of fire, electric shock or injury to
persons.
WARNING
Any instructions in this manual that require opening the equipment
cover or enclosure are for use by qualified service personnel only.
To reduce the risk of electric shock, do not perform any servicing
other than that contained in the operating instructions unless you
are qualified to do so
.
Symbols and Their Meanings in This Manual
The lightning flash with arrowhead symbol, within an equilateral
triangle, alerts the user to the presence of “dangerous voltage”
within the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle alerts the
user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the
equipment.

viii
Section — Important Safeguards and Notices
This symbol represents a protective grounding terminal. Such a
terminal must be connected to earth ground prior to making any
other connections to the equipment.
The fuse symbol indicates that the fuse referenced in text must be
replaced with one having the ratings indicated.

ix
Warnings
Warnings
■
Heed all warnings on the unit and in the operating
instructions.
■
Do not use this product in or near water.
■
Disconnect AC power before installing any options.
■
This product is grounded through the grounding conductor
of the power cord. To avoid electrical shock, plug the power
cord into a properly wired receptacle before connecting the
product inputs or outputs.
■
Route power cords and other cables so that they are not likely
to be damaged.
■
Disconnect power before cleaning. Do not use liquid or
aerosol cleaners; use only a damp cloth.
■
Dangerous voltages exist at several points in this product. To
avoid personal injury, do not touch exposed connections and
components while power is on.
■
Do not wear hand jewelry or watches when troubleshooting
high current circuits, such as the power supplies.
■
During installation, do not use the door handles or front
panels to lift the equipment as they may open abruptly and
injure you.
■
To avoid fire hazard, use only the replacement parts with
specified correct type, voltage and current rating as
referenced in the appropriate parts list for this product.
Always refer fuse replacement to qualified service personnel.
■
To avoid explosion, do not operate this product in an
explosive atmosphere unless it has been specifically certified
for such operation.
■
Have qualified personnel perform safety checks after any
completed service.
■
If equipped with redundant power, this unit has two power
cords. To reduce the risk of electric shock, disconnect both
power supply cords before servicing.

x
Section — Important Safeguards and Notices
Cautions
■
To prevent damage to equipment when replacing fuses, locate
and correct the trouble that caused the fuse to blow before
applying power.
■
Verify that all power supply lights are off before removing
power supply or servicing equipment.
■
Use only specified replacement parts.
■
Follow static precautions at all times when handling this
equipment.
■
Leave the back of the frame clear for air exhaust cooling and
to allow room for cabling. Slots and openings in the cabinet
are provided for ventilation. Do not block them.
■
The front door is part of the fire enclosure and should be kept
closed during normal operation.
■
This product should be powered only as described in the
manual. To prevent equipment damage select the proper line
voltage at the AC input connector as described in the
installation documentation.
■
Ensure that the two power supply cords are each plugged into
a separate branch circuit in case one circuit should fail.
■
Circuit boards in this product are densely populated with
surface mount and ASIC components. Special tools and
techniques are required to safely and effectively troubleshoot
and repair modules that use SMT or ASIC components. For
this reason, service and repair of Tektronix-GVP products
incorporating surface mount technology are supported only
on a module exchange basis. Customers should not attempt to
troubleshoot or repair modules that contain SMT or ASIC
components. Tektronix-GVP assumes no liability for damage
caused by unauthorized repairs. This applies to both in- and
out-of-warranty products.