Speco Technologies VM-1201 - Manual (Page 2)

WARNING
==========
For continuous protection against radiation, shock and flame, replace only with same type
and rating components specified in the approved sheets.
Disclaimer
Speco Technologies makes no representation or warranties, either expressed or implied, with
respect to the contents hereof and specifically disclaims any warranties, merchantability or fitness for any
particular purpose. Furthermore Speco Technologies reserves the right to revise this publication and to
make changes from time to time in contents hereof without obligation to notify any person of such
revision or changes.
Table of Contents
1. INTRODUCTION .......................................................….....…………………………………….. 3
1.1 OPERATIONAL SPECIFICATION ................................…............…………………….……... 3
1.1.1 Operating Environment ...........................................…..………………………………….. 3
1.1.2 Signal Input Requirements ...................................….....…………………….……………. 4
1.1.3 Power Input Requirements ................................…......……………………....…………… 4
1.2 FUNCTIONAL SPECIFICATION...........................…....……………………...............………. 5
1.2.1 Display Quality....................................................………………….………..………….. 5
1.3 CONTROL AND ADJUSTMENTS.........................…....................…………………………... 6
1.4 PHYSICAL SPECIFICATIONS................................….........……………………......………... 7
2.THEORY OF OPERATION..........................................…..…………………….........………….. 7
2.1 MAIN POWER SUPPLY BLOCK......................….....….……………………...............……... 7
2.2 VIDEO INPUT BLOCK ............……….......................…………………….............…………. 7
2.2.1 Video filter………….….…………………………………………………………………. 7
2.3 VERTICAL & HORIZONTAL PROCESSOR 7
2.3.1 Vertical guard……………………………………………………………………………… 7
2.3.2 Vertical Drive Output………..……………………………………………………………. 7
2.3.3 Sync Separator……………………………………………………………………………. 7
2.3.4 Phase Detector…………………………………………………………………………….. 7
2.3.5 Supply……………………………………………………………………………………... 8
2.3.6 Horizontal Oscillator, Horizontal O/P Transistor and Second Phase Detector…………… 8
2.3.7 Mute Output And 50/60 HZ Identification………………………………………………... 8
2.3.8 Sandcastle Output…………………………………………………………………………. 8
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