Tektronix 7612D User manual

Service
Manual
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Tektronix
067-0587-10
7612D
Calibration
Fixture
Signal
Standardizer
(Supplement to 067-0587-02)
070-6178-00
Original
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Helmut
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Elektronik
All reference to the 067-0587-02 in the 070-2427-00
manual now apply to the 067-0587-10 — 7612D
Calibration Fixture.
Warning
The servicing instructions are for use by qualified
personne! only, To avoid personal injury, do not
perform any servicing unless you are qualified to do
so. Refer to the Safety Summary prior to performing
service.
First Edition: May 1986

Copyright © Tektronix, Inc. 1986. All rights reserved.
Tektronix
products
are
covered
by
U.S.
and
foreign
patents,
issued
and
pending.
Information
in
this
publication
supercedes
that in all previously published material. Specifications and price change
privileges reserved.
Printed in the U.S.A.
Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070-1000
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

0867-0587-10
© FRONT OF INSTRUMENT $135 LOCATION
:
Figure 1-1. 067-0587-10 7612D calibration fixture signal standardizer with
right cover removed ($135 location).

087-0587-10
GENERAL INFORMATION
INTRODUCTION
This 067-0587-10 Instruction Manual contains supplemental
information and a partial diagram for the Signal Standard-
izer, 067-0587-02 Calibration Fixture Manual.
The information in the 067-0587-02 manual is the same
needed for the 067-0587-10 except as noted below. When
combined together the 067-0587-02 Instruction Manual
provides operating and servicing information for the
067-0587-10. Insert the 10 version before Section 1 of the
02 manual.
067-0587-02 VERSUS 067-0587-10
The 067-0587-10 is a test instrument used as a calibration
aid for optimum adjustment of Tektronix 7612D Program-
mable Digitizers. The difference between the 067-0587-02
Signal Standardizer used in the calibration of 7000 Series
oscilloscope mainframes and the 067-0587-10 is the signal
comming from the PRETRIG OUT connector on the front of
the instrument.
In the GAIN position the signal out will not be a pretrigger
signal instead, the 067-0587-10 will generate one trigger per
staircase signal. The 02 version generates one pretrigger
pulse for each step in the staircase signal.
Since, the 7612D calibration software requires one trigger
per staircase when checking GAIN the 067-0587-10 will pri-
marily be used in the calibration of 7612D's.
OPERATION
The switch ($135) is mounted on the back side of the Main
Interface circuit board. When the switch is pushed to the
forward position the instrument jis functioning as an
067-0587-10 and when the switch is pushed toward the rear
of the instrument it functions as an unmodified 067-0587-02.
Switch locations are illustrated in figure 1-1.
The 067-0587-10 provides one trigger for each staircase
generated and the trigger occurs at the beginning of the
staircase.
The verification procedure is the only additional Perfor-
mance Check required. After completing the calibration pro-
cedure contained in Section § of the Instruction Manual for
the 067-0587-02 pertorm the 067-0587-10 staircase trigger
verification check.
1-1

067-0587-10
F. 067-0587-10 STAIRCASE TRIGGER PERFORMANCE
VERIFICATION
Equipment Required: (Numbers correspond fo those listed in Table 5-3, Test Equipment in the 067-0587-02 manual.)
1. Tektronix 7000-series mainframe T904A
3. Tektronix Timebase 7B80
§. Tektronix Vertical Amplifier TAIBA
19. Bne 42 inch cable 012-0057-01
BEFORE YOU BEGIN: b. Set the Vertical mode for an alternate vertical
display.
4. Turn off power to the mainframe oscilloscope.
c. Set the 7B80 controis for a stable display of one or
2. install the timebase in the right most compart. two cycies of the staircase.
ment and the vertical amplifier in the left most
compartment of the maintrame. d. Slide the calibration fixture mode switch from the 10
position to the 02 position.
3, Remove the right side cover (with the front-panai
forward). See figure 1-1, e. CHECK—That the staircase/trigger signals dis-
played on your test oscilloscope changes from one trig-
ger per staircase to one trigger per each staircase step.
4. Install the 067-0587-10 in the Inside vertical com- See figures 1-2 and 1-3.
partment of the oscilloscope mainframe.
f. Return the switch to the 10 position.
§. Turn oscilloscope power switch on.
g- Replace the right side cover of the Signal
Standardizer,
F1, CHECK STAIRCASE TRIGGER SIGNAL
a. Connect the PRETRIG OUT of the 067-0587-10 to
the vertical amplifier input with the bne cable. This concludes the performance verification check.
4-2

067-0587-10
LEVEL
Pbobbelsfippepebobapofopadidiy ff
STEP NUMBER
6178-02
LEVEL
AULA UU
bbedipedstebrfepepotufofopibspt ff
LU
STEP NUMBER
6778-03
Figure 1-2. Staircase & trigger signals with
067-0587-10.
Figure 1-3. Staircase & trigger signals with
067-0587-02.
1-3

Replaceable Electrical Parts~067—-0587-10
Tektronix Serial/Assembly No. Mfr,
Component No, Part No Effective Dscont Name & Description Code Mfr, Part No.
R438 345-0102-00 RES ,FXD FILM: 1K OHM 5% 0.258 57668 = NTRZ2SJEO1KO
R135 315-0152-00 RES FXD FILM 1.5K OHM 5% 0. 25K 57668 = NTR25J-E01K5
$135 260-164 1-00 SWITCH SLIQE:DPOT 0,58, 425V0C 40389 «= 23~021-114
136 ~ WIRE ELECTRICAL: 20 ANG BARE
4139 RIRE, ELECTRICAL: 20 AKG BARE
{REPLACEABLE PORTS FOR THE STANDARD
067~-0567-02 CAN BE FOUND IN THE OPTIONAL
ACCESSORIES
MANUAL LISTED BELOK)
STANDARD ACCESSORIES
O70-6178-00 MANUAL, TECH: SUPPLEMENT 76120 80009 070-6178-00
OPTIONAL ACCESSORIES
070-2427-00 MONUAL , TECH: INSTRUCTION B0G08 a70-2427-00
CROSS
INDEX
-
MFR.
CODE
NUMBER
TO
MANUFACTURER
Mfr. . ;
Coge
Manufacturer
Address
City,
State,
Zip
Code
40389
©
TLLINOTS
TOOL
RORKS
INC
4744
W
DBMEN
AVE
CHICAGO
IL
60647
57668
ROHN
CORP
46934
MILLIKEN
AVE
IRVINE
CA
92743
80009
TEKTRGONIX
ENC
4900
S
K
GRIFFITH
OR
BEAVERTON
OR
97077
? G BOX 500
1-4

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040- 1204-00
7612D CALIBRATION COMPATIBILITY
For TEKTRONIX® 067~-0587-02 Signal Standardizers
Serial Numbers 8010100 - Up
This kit contains parts and Instructions to modify a
067-0587-02 Signal Standardizer Calibration Fixture to a
067-0587-10 7612D Signal Standardizer Calibration Fixture.
The new standardizer includes a switch, $135, which allows
one to switch between 067-0587-10 and 067-0587-02
operation. In the ~10 position. the signal coming from
PRETRIG OUT generates one trigger for each staircase signal
when used with the TEST switch in the GAIN position. In the
~02 position, a pretrigger signal is produced instead.
=
Copyright © 1986 22-MAY~1986 page ]
Tektronix, Inc.
Ali Rights Reserved
ast
TEKTRONIX. SCOPE-MOBILE and Po ate registered trademarks of Tektronix, inc. SONY / TEKTRONIX is a registered trademark of Sony / Tektronix, inc.

KIT PARTS UST:
Ckt. Number Quantity Part Number Description
1 ea 070~-6178-00 Manual. tech supp. 7612D cal fixture
W 136 :
Ww 139 1 ft Wire. elec, 20AWG. bare
$135 1 ea 260-1641-00 Switch. slide, DPDT. 0.5A. 125V ac
R134 1 @a 315-0102-00 Resistor, film, kn, 5%, 0.25W
R135 1 ea 315-0152-00 Resistor, film. 1.5ka, 5%, 0.25W
Pea 2 treet mete Marker, idant, mkd 067-0587-10
INSTRUCTIONS:
WARNING
RH: rh
Before proceeding, ensure the instrument power switch
is in the off position, then remove the cal fixture from
the mainframe.
Remove the right side cover from the plug-in test. fixture.
Cut the circuit board run (which will be beneath S135 when installed)
as shown in Fig. 1.
Install S135, R134 and R135 with the included bare wire as shown in
Fig. 1 Cas an aid to the rough location of the switch. see figure 1-1
in the included, supplementary Service Manuai).
Affix the included Identification marker directly to the plug-in front
panel. over the nomenciature *067-0587-02."
Verify pertormance of the newly modified test fixture with the
procedure on page 1-2 of the included. supplementary Service .
Manual.
040-1204-00 page 2

=OO00000
2
PINBOOSOCOO
eee
98900000
R34
00 1k
U1S0
0000000
CUT RUN UNDER $135
BASE OF Q139 TO
JUNCTION
OF
R136/R137
i
is
\
COoCOO
$135 WIRING. UNDERSIDE
Fig. 1 - $135 Installation
040~1204-00
page
3

040~-1204-00
7612D CALIBRATION COMPATIBILITY
For TEKTRONIX® 067-0587-02 Signa! Standardizers
Serial Numbers 6010100 - Up
This kit contains parts and _ Instructions to modify a
067~-0587-02 Signal Standardizer Calibration Fixture to a
067-0587-10 7612D Signal Standardizer Calibration Fixture.
The new standardizer includes a switch, S135, which allows
one to switch between 067-0587-10 and 067~-0587-02
operation. In the ~10 position. the signal coming from
PRETRIG OUT generates one trigger for each staircase signal
when used with the TEST switch in the GAIN position. In the
-02 position, a pretrigger signal is produced instead.
=~
Copyright © 1986 22-MAY- 1986 page 1
Tektronix, tne.
All Rights Reserved :
a
TEKTRONIX, SCOPE-MOBILE and w are registered trademarks of Tektronix, Inc. SONY / TEKTRONIZ is a registered trademark of Sony / Tektronix, inc.