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5. Set the HORIZ DISPLAY switch to B D LY 'D .
6. Slightly readjust the DTP control to move the firs t tim e
measurement point to some vertical reference line (see
Fig. 2-13, B). Note the DTP control setting.
7. Adjust the DTP control to move the second time mea
surement point to the same vertical reference line (see
Fig. 2-13, B). Note the DTP control setting.
NOTE
I f several signal repetitions exist between the
time measurement points, switch to the A
Intensified mode to locate the correct repeti
tion, then back to the B Delayed mode to
make the measurement. D,o n o t move the
horizontal POSITION control.
Operating Instructions—455/A 2/B 2
2. With the D ELAY TIM E POS control, move the left
edge o f the intensified zone to the le ft side o f the portion
o f the A sweep display to be magnified.
3. Set the B T IM E /D IV switch so just the portion o f the
A sweep display to be magnified is intensified (see Fig.
2-14, A).
4. Set the HORIZ DISPLAY switch to B D LY 'D . The por
tion o f the A sweep display that was intensified in step 3
is not displayed in magnified form (see Fig. 2-14, B). The
displayed sweep rate is determined by the B T IM E /D IV
switch. To calculate the apparent magnification factor,
use the formula:
Apparent
_
A .T IM E /D IV switch setting
.*■ Magnification
B T IM E /D IV switch setting
8. Use the follow ing form ula to fin d the tim e difference.
second
first
A T IM E /D IV
Time
DTP -
DTP
x
switch
Difference
setting
setting
setting
Example:
The A T IM E /D IV switch was set to 0.2 ms/division and
the B T IM E /D IV to 10 /ts/division. The first DTP control
setting was 0.88 (at point A, Fig. 2-13, A) and the second
was 5.57 (at point B, Fig. 2-13, A).
Substituting the given values:
Time
Difference
(5.57 - 0.88) x 0.2 ms
Time Difference = 0.938 ms
Delayed-Sweep Magnification
The B Delayed mode can provide higher apparent sweep
rate magnification than that provided by the X I 0 MAG
switch. First try the Magnified-Sweep-Starts-After-Delay
method. If this produces too much horizontal jitte r, try
the Magnified-Sweep-Triggered-After-Delay method.
M AG N IFIE D SWEEP STARTS AFTER D ELAY.
1. Set the HORIZ DISPLAY switch to A INTEN and
the B SOURCE switch to STARTS AFTER DELAY.
Fig. 2-14. Delayed Sweep magnification.
REV. A, O C T 1975
2-13
Содержание 455
Страница 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 ...
Страница 9: ......
Страница 13: ...455 A2 B2 x 455 A2 B2 Portable Oscilloscope ...
Страница 60: ...Circuit Description 455 A2 B2 Fig 4 3 Attenuator and gain switching sequences 4 8 REV A OCT 1975 ...
Страница 61: ...Circuit Description 455 A2 B2 Fig 4 4 Channel switching gates REV A OCT 1975 4 9 ...
Страница 66: ...Fig 4 6 Sweep generator 1C Function block diagram Circuit Description 455 A2 B2 ...
Страница 80: ...Maintenance 455 A2 B2 BOTTOM FRAME Fig 5 7 VO LTS DIV switch disassembly 5 8 REV A OCT 1975 ...
Страница 90: ...Maintenance 455 A2 B2 Fig 5 13 Troubleshooting chart 5 18 REV A O CT 1975 ...
Страница 91: ...Maintenance 455 A2 B2 1907 1 A Fig 5 13 Troubleshooting chart cont REV A OCT 1975 5 19 ...
Страница 120: ...Instrument Options 455 A2 B2 o j a O Option 5 Page 12 REV B APR 1977 P A R T IA L A 1 0 T R I E R B O A R D ...
Страница 132: ...Instrument Options 455 A2 B2 Option 7 Page 8 REV E AUG 1979 D C TO AC I NVERTER ...
Страница 164: ...455 A2 B2 LARGE 5 INTEGRATED CIRCUITS Fig 9 1 Semiconductor lead identification REV C MAY 1978 ...
Страница 166: ...l 07 7 REV b NOV C M1 4 5 5 MAIN MODULE BLOCK DIAGRAM ...
Страница 167: ...4 5 5 A 2 B 2 AS VERTICAL MODULE IR07 R8 RE V B M O ...
Страница 168: ...I S 0 7 9 8 R E V B NOV IRT7 A2 VERTICAL MODULE BLOCK DIAGRAM ...
Страница 169: ...REV B NOV 1977 Fig 9 2 A1 Partial Interface board compo ...
Страница 170: ...455 A2 B2 Sea Parts List for serial number ranges tial Interface board component locations ...
Страница 173: ...v I m B 2 HORIZONTAL MODULE BLOCK DIAGRAM ...
Страница 174: ...455 A2 B2 REV B NOV 1977 Fig 9 3 A 1 Partial Interface board component locations ...
Страница 182: ...455 A2 B2 Fig 9 4 A20 Vertical board component locations SN B0110 ...
Страница 185: ...455 A2 S2 4 5 5 M A fN M O DULE ...
Страница 187: ...455 A2 B2 Fig 9 5 A20 Vertical board component location SN B010100 B REV C NOV 1977 ...
Страница 191: ...V O L T S 01 ...
Страница 192: ...V O LT S Q IV S H O W N IN 57 H V ...
Страница 198: ... U 1 X SlCjMAt TO P2 A4 h o p it MODULE SEE PARTS LIST FOR SEMICONDUCTOR TYPES f SWITCHING ...
Страница 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 ...
Страница 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 ...
Страница 212: ...455 A2 B2 0 0 V 2 _______________ 20 mV 50C 1 n5 i d 5 30 m j _ 500 1 n J 1 0 3 V 0 V 3 0 V 1907 117 ...
Страница 213: ......
Страница 214: ......
Страница 216: ...A B T IM IN G S W IT C H INTERFACE C O N N E C T O R ...
Страница 223: ... ...
Страница 224: ...455 A 2 B 2 ...
Страница 225: ... 455 A2 B2 ...
Страница 226: ......
Страница 233: ......
Страница 234: ...455 A2 B2 ...