Tektronix C-30B User manual

Ttektronix
COMMITTED TO EXCELLENCE
C - 3 0 B
C A M E R A
INSTRUCTION MANUAL
Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon 97077 Serial N u m b e r
----------------------------------
070-2825-00 F ir s t P rin tin g , J U N 1 9 7 9

WARRANTY
Tektronix warrants thatthis product isfreefrom defects in materials
and workmanship. Thewarranty period is one (1) yearfromthedate
of shipment. Tektronix will, at its Option, repair or replace the
product if Tektronix determines it is defective within the warranty
period and if it is returned, freight prepaid, to a Service center
designated by Tektronix.
Tektronix is not obligated to furnish Service under this warranty
a. to repair damage resulting from attempts by personnel other
than Tektronix representatives to install, repair, orservicethe
product;
b. to repair damage resulting from improper use or from
connecting the product to incompatible equipment;
c. if personnel other than Tektronix representatives modify the
hardware or Software.
There is no implied warranty of fitness for a particular purpose.
Tektronix is not liable for consequential damages.
Copyright © 1979 Tektronix, Inc. All rights reserved.
Contents of this publication may not be reproduced in any
form without the written permission of Tektronix, Inc.
Products of Tektronix, Inc. and its subsidiaries are
covered by U.S. and foreign patents and/or pending
Patents.
TEKTRONIX, TEK, SCOPE-MOBILE, and f ^ t are reg-
istered trademarks of Tektronix, Inc.
Printed in U.S.A. Specification and price change
Privileges are reserved.

C-30B Camera
TABLE OF CONTENTS
Page
LISTO F ILLUSTR A TIO N S
........................ ii
LIST OF TABLES ........................................ iii
SECTION 1 GENERAL INFORMATION
IN TRODUCTIO N
................................. 1-1
S P EC IF IC A T IO N ................................. 1-1
SECTION 2 OPERATING INSTRUCTIONS
DESCRIPTION OF CONTROLS
AND CONNECTORS ................................. 2-1
PREPARATION FOR USE ....................... 2-3
MOUNTING THE C A M ERA ............... 2-3
Light Seal Replacem ent .................. 2-3
Camera M o u n tin g ............................ 2-3
IN STALLING CAMERA BACKS. . . 2-4
USING THE POLAROID PACK
FILM BACK ........................................... 2-5
Focusing ........................................... 2-5
Installing the Pack F ilm .................. 2-6
Advancing and Developing the
Pack F ilm .........................................2-7
USING THE POLAROID ROLL-FILM
B A C K ..................................................... 2-8
Focusing
........................................... 2-8
Installing the Roll Film .................... 2-9
Advancing and Developing the
Roll Film ........................................... 2-9
USING THE GRAFLOK BAC K____2-10
Focusing
......................................... 2-10
Installing Loaded Film Holders . .2-10
PHOTOGRAPHIC CONSIDERATIONS.2-11
WRITING RATE ................................. 2-11
CRT SELECTION ............................... 2-11
FILM SE LECTIO N .............................2-12
HELPFUL TECHNIQUES WITH
F I L M ................................................... 2-13
Polaroid F ilm ..................................2-13
Conventional Film .......................... 2-14
PICTURE T A K IN G ............................ 2-15
Photographing Repetitive Signals .2-15
Photographing Single-Sweep
Displays............................................2-15
Page
SECTION 2 OPERATING INSTRUCTIONS (cont)
PICTURE TROUBLE..........................2-15
Wide Trace ...................................... 2-15
No Image on P ic tu re .....................2-15
Light Streaks on Picture................2-16
Fogging on Picture..........................2-16
Trace or External Graticule in Focus,
But Not B o th
................................. 2-16
Some Portions of Photographed Signal
Appear Brighter Than Others. . . .2-16
ELIMINATIN G PARALLAX AND
FOCUSING DIFFIC U L TIE S
............. 2-16
First M e th o d ................................. 2-16
Second M ethod...............................2-16
EFFECTS OF THE f-STOP SETTING
ON THE DEPTH OF F IE L D
............. 2-16
EFFECTS OF CAMERA
MAGNIFICATION ON
EXPOSURE.........................................2-17
RECIPROCITY
.................................... 2-17
SECTION 3 MAINTENANCE
GENERAL CARE OF THE CAMERA
SYSTEM
..................................................... 3-1
L EN S E S ................................................ 3-1
SH U TTER ............................................. 3-1
CAMERA BACK R OLLER S ............... 3-1
LIGHT L E A K S E A L IN G .................... 3-1
MAGNIFICATION ADJUSTMENTS. . . 3-2
COMPONENT REPLA C E M ENT .......... 3-3
REPLACEMENT PA R TS .................... 3-3
INSTRUMENT REPACKAGING . . . 3-3
Required Reshipment Information .3-3
SECTION 4 OPTIONS
OPTION 1 ................................................4-1
SECTION 5 REPLACEABLE MECHANICAL PARTS
CHANGE INFORMATION
l

C-30B Camera
LIST OF ILLUSTRATIONS
Figure IMo. Page
The C-30B Camera.........................................iv
1- 1 Dimensional drawing w ith a Polaroid pack
film back attached.......................................1-3
2- 1 Camera Controls and connectors ................ 2-2
2-2 Mounting the camera and inserting the
light seal ....................................................... 2-3
2-3 Mounting the pack-film back to the
camera..........................................................2-4
2-4 Installing and using the focus plate in
in the pack-film back .................................. 2-5
2-5 Installing the pack-film ................................ 2-6
2-6 Developing the pack-film.............................2-7
2-7 Opening the roll-film back
.......................... 2-8
2-8 Installing and using the focus plate in
the roll-film back.........................................2-8
2-9 View hood attached to the Graflok
back............................................................2-10
2-10 Installing the 4- by 5-inch cut film holder
in the Graflok back...................................2-10
2-11 Single trace o f a damped waveform. . . .2-11
2-12 Using transillumination to see otherwise
invisible Inform ation.................................2-14
2- 13 Depth of field for different aperture
settings
....................................................... 2-17
3- 1 Sleeve lock collar location .......................... 3-2
II

C-30B Camera
LIST OF TABLES
Table No. Page
1-1 Optical Characteristics ................................ 1-1
1-2 Electrical and Mechanical
Characteristics ........................................... 1-2
1-3 Environmental Characteristics....................1-2
1- 4 Physical Characteristics ................................ 1-2
2- 1 Commonly-used Phosphors
...................... 2-12
2-2 Commonly-used Polaroid Film for the
C-30B Camera............................................2-13

C-30B Camera
The C-30B Camera.
IV @

Section 1— C-30B Camera
GENERAL INFORMATION
INTRODUCTION
The TEKTRON IX C-30B is a compact, variable-
magnification, general-purpose camera designed primarily
fo r photographing TEKTR ONIX 400-series oscilloscope
traces and monitor displays. Its lens magnification is
manually variable from 0.7 to 1.5 in 10 Steps. Three inter-
changeable camera backs can be accommodated by the
C-30B Camera: a Polaroid Pack-Film back, a Polaroid
Roll-Film back, and a 4- by 5-inch Graflok back. When the
camera is mounted on the test instrument, dual swing-away
hinges allow the camera to be swung out of the way, either
to the left or to the right, for direct viewing of the crt
display.
The C-30B Camera is delivered with two light seals, one
for the 8- by 10-division crt and the other for the 6- by
10-division crt. The 8- by 10-division light seal comes
inserted in the mounting adapter and is used with TEK
TRONIX 422, 453A, 454A, 485, and 491 instruments. The
6- by 10-division light seal is used w ith TEKTRON IX 453
and 454 instruments.
SPECIFICATION
The Standard C-30B Camera is shipped w ith an adapter
that can mount directly to a TEKTR ONIX 422, 450-series
(except 455), 485, or 491 instrument. A listing of other
camera adapters and the equipment for which they are used
is found in the tabbed Accessories page at the rear of this
manual.
The optical characteristics presented in Table 1-1 are
valid only if the camera has been operating at an ambient
temperature between 0° and +50° C (+32° to +122° F).
Electrical and mechanical, environmental, and physical
characteristics of the camera are listed in Tables 1-2, 1-3,
and 1-4 respectively.
Table 1-1
Optical Characteristics
Characteristics Performance Requirements
Lens
Maximum Relative Aperture at Infinity f/1.9.
Focal Length 56 mm nominal.
Coverage at Maximum Relative Aperture A t least 120 mm diameter in object plane.
Magnification (Object-to-lmage Ratio) 1:1.5, 1:1.4, 1:1.3, 1:1.2, 1:1.1, 1:1, 1:0.9, 1:0.85, 1:0.8, and
1:0.7 ±5%.
Geometrical Distortion Not more than 0.2% as measured at 1:1.1 magnification.
Not more than 0.75% as measured at 1:1.4 magnification and at
1:0.8 magnification.
Relative Illumination 20% at 120 mm diameter w ith a relative aperture of f/1.9.
Photographie Resolving Power at 1:1
Magnification
Center Pattern A t least 25 lines/mm, w ith USAF target pattem 1951 on Plus X
pan film , developed in 1:1 DK 50 fo r 6 minutes at 20° C.
A t 120 mm Diameter A t least 10 lines/mm, with USAF target pattern 1951 on Plus X
pan film , developed in 1:1 DK50 for 6 minutes at 20° C.
1-1

General Inform ation—C-30B Camera
Table 1-2
Electrical and Mechanical Characteristics
Characteristics Performance Requirements
Maximum X Sync Contact Rating 28 V de, 750 mA (Common is connected to case of camera).
Shutter
Speed (Normal) Range 1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, and 1/125 second.
Accuracy DIN 19015.
Relative Aperture (f-Number) Range f/1 .9, 2.8,4, 5.6, 8, 11, and 16.
Accuracy ±1/3 of aperture (f) setting.
Synchronization Internal; X type as describe in 3.1 of U.S.A. Standard PH
18-1957.
Table 1-3
Characteristics
Environmental Characteristics
Description
Temperature
Operating 0° to +50° C (+32° to +122° F).
Storage -5 5 ° to +75° C (-6 7 ° to+167 ° F).
Relative Hum idity
Operating 75% at +50° C.
Altitude
Operating To 15,000 f t (4,500 m).
Storage To 50,000 ft (15,000 m).
Vibration 15 minutes along each of the three major axes at a total displacement of 0.025 inch p-p with
frequency varied from 10 to 55 to 10 Hz in one-minute sweeps, held fo r ten minutes at each
resonant point, or if none, at 55 Hz.
Shock Three shocks at 50 g, half-sine, 10-ms duration in each direction along each major axis, for a
total of 18 shocks.
T ransportation Qualifies under National Safe Transit Committee Preshipment Test Procedures 1A-B-1 and 2.
Table 1-4
Physical Characteristics
Characteristics Description
Weight (with adapter mounted, no film back) 3.25 Ib (1.47 kg).
Length, Width, and Height (with Polaroid
Pack-Film back)
See Figure 1-1.
*
1-2 REV A FEB 1980

General Information—C-30B Camera
Figure 1-1. Dimensional drawing with a Polaroid pack-film back attached.
@1-3