Instrument Options—455/A2/B2
OPTION 5
Option 5 adds a sync separator which provides additional processing fo r trigger signals to facilitate observation of composite
video and related television waveforms.
Added circuitry provides amplification, selectable polarity inversion, clipping, and sync recognition. The output o f this circuitry
supplies both vertical (field-rate) and horizontal (line-rate) trigger signals to the A TRIGGER COUPLING switch and supplies
horizontal (line-rate) trigger signals to the B (D LY'D ) TRIGGER SOURCE switch.
The sync separator operates from either sync-negative or sync-positive video sources, 405 to 1201 lines, 50 or 60 Hz field rate.
The A SOURCE switch determines the source of the signal supplied to the sync separator.
S P E C IF IC A T IO N
The standard B2 Horizontal Module characteristics are appli
cable except as noted below:
1. The sync separator provides stable triggering of A Sweep
at the line or field rate and stable triggering o f B Sweep at
the line rate. Accepts sync-positive or sync-negative com
posite video, 405 to 1201 line, 50 or 60 Hz field rate.
2. Adds 2 positions to the A COUPLING switch (FIELD
and T V LINE). Adds 1 position to the B SOURCE switch
(TV LINE).
3. Sensitivity. See Table 1.
TABLE 1
Sync Separator Trigger Sensitivity
A SOURCE
Switch
Type of Signal
SEN SITIVITY
Min
Max
NORM
Composite video (nominal)1
2 div
20 div
CH 1, CH 2
Composite Sync
EXT
Composite video (nominal)1
200 mV 4 V
Composite sync
75 mV
4 V
EXT -t- 10
Composite video (nominal)1
2.0 V
40 V
Composite sync
750 mV 40 V
1 Peak Video ~ 7 /3 sync amplitude.
R E V . B, APR. 1977
Option 5 Page 1
Summary of Contents for 455
Page 1: ...Tektronix 455 A2 B2 PORTABLE OSCILLOSCOPE WITH OPTIONS I N S T R U C T I O N M A N U A L ...
Page 9: ......
Page 13: ...455 A2 B2 x 455 A2 B2 Portable Oscilloscope ...
Page 61: ...Circuit Description 455 A2 B2 Fig 4 4 Channel switching gates REV A OCT 1975 4 9 ...
Page 66: ...Fig 4 6 Sweep generator 1C Function block diagram Circuit Description 455 A2 B2 ...
Page 80: ...Maintenance 455 A2 B2 BOTTOM FRAME Fig 5 7 VO LTS DIV switch disassembly 5 8 REV A OCT 1975 ...
Page 90: ...Maintenance 455 A2 B2 Fig 5 13 Troubleshooting chart 5 18 REV A O CT 1975 ...
Page 91: ...Maintenance 455 A2 B2 1907 1 A Fig 5 13 Troubleshooting chart cont REV A OCT 1975 5 19 ...
Page 132: ...Instrument Options 455 A2 B2 Option 7 Page 8 REV E AUG 1979 D C TO AC I NVERTER ...
Page 166: ...l 07 7 REV b NOV C M1 4 5 5 MAIN MODULE BLOCK DIAGRAM ...
Page 167: ...4 5 5 A 2 B 2 AS VERTICAL MODULE IR07 R8 RE V B M O ...
Page 168: ...I S 0 7 9 8 R E V B NOV IRT7 A2 VERTICAL MODULE BLOCK DIAGRAM ...
Page 169: ...REV B NOV 1977 Fig 9 2 A1 Partial Interface board compo ...
Page 170: ...455 A2 B2 Sea Parts List for serial number ranges tial Interface board component locations ...
Page 173: ...v I m B 2 HORIZONTAL MODULE BLOCK DIAGRAM ...
Page 174: ...455 A2 B2 REV B NOV 1977 Fig 9 3 A 1 Partial Interface board component locations ...
Page 182: ...455 A2 B2 Fig 9 4 A20 Vertical board component locations SN B0110 ...
Page 185: ...455 A2 S2 4 5 5 M A fN M O DULE ...
Page 187: ...455 A2 B2 Fig 9 5 A20 Vertical board component location SN B010100 B REV C NOV 1977 ...
Page 191: ...V O L T S 01 ...
Page 192: ...V O LT S Q IV S H O W N IN 57 H V ...
Page 198: ... U 1 X SlCjMAt TO P2 A4 h o p it MODULE SEE PARTS LIST FOR SEMICONDUCTOR TYPES f SWITCHING ...
Page 207: ...A 1 4 B T I M I N G S W I T C H B O A R D A13 A TIM ING SWITCH BOARD 1 9 0 7 3 ...
Page 209: ...4 5 5 A 2 B 2 B 2 h o r iz o n t a l m o d u l e R o i I 11 R E V C NOV IS77 ...
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Page 214: ......
Page 216: ...A B T IM IN G S W IT C H INTERFACE C O N N E C T O R ...
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Page 224: ...455 A 2 B 2 ...
Page 225: ... 455 A2 B2 ...
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Page 234: ...455 A2 B2 ...