Tektronix Type 82 PLUG-IN Instruction Manual page 43

SECTION 5
INTRODUCTION
A complete procedure for checking the operational stand-
ards and calibration of the Type 82 is provided in this sec-
tion of the manual. The steps are arranged in logical se-
quence to avoid unnecessary repetition.
Calibration steps may be performed out of se-
quence, or a single step may be performed in-
dividually. However, it may be necessary to refer
to the preceding step(s) and/or preliminary pro-
cedure for additional setup information, such as
the proper front- panel control settings, test
equipment used, and lead or cable connections.
These step-by-step instructions furnish an orderly ap-
proach for isolation of minor operational deficiencies that
may not be apparent during normal useage. Consequently,
this procedure should be used in conjunction with any main-
tenance and troubleshooting system to locate such defici-
encies. Obscure symptoms, if any, occurring during low-
frequency operation usually show up when performing steps
1 through 25. The remaining steps check and aid in restor-
ing the Type 82 optimum transient response.
lf a minor malfunction becomes apparent at some point
in the procedure, it is not usually necessary to locate its
cause immediately before continuing to the next step. Ad-
ditional symptoms revealed by performing further steps may
sometimes simplify the task of locating the trouble. Once
the trouble is located, make the necessary repair. Then
repeat any calibration steps affected by the repair, before
going on (see Table 4-7, Maintenance section).
Test equipment used in a particular step should be left
connected at the end of that step unless instructions state
otherwise. Similarly, controls not mentioned are assumed to
be in the positions they were in at the conclusion of the
preceding step(s).
EQUIPMENT REQUIRED
The following equipment is required to perform a com-
plete calibration of the Type 82.
(1) Tektronix Type 580-Series Oscilloscope. Must be cali-
brated. In addition, the transient response of the ver-
tical amplifier must be standardized for optimum per-
formance with the Type 80-Series plug-in units. (Type
581 Oscilloscopes, S/N 950 and up, and Type 585
Oscilloscopes S/N 2585 and up have been standar-
dized. There are some exceptions to these S/N ranges
since some earlier S/N oscilloscopes have been modi-
fied out of sequence. Your Tektronix Field Engineer
has a complete list of the modified instruments.) All
Type 580A-Series Oscilloscopes have the transient re-
sponse of the vertical amplifier standardized.
(2) Square-wave generator, Tektronix Type 105 or equiva-
lent. Required specifications: 13-nsec or less risetime;
output frequency of approximately 2.5 kc; output amp-
litude variable from 10 to 100 volts across an internal
600-ohm load.
(3) TU-5 Pulser complete kit, Tektronix Part No. 015-043,
contains the following items*:
Part
Qty. Description Number
] TU-5 Pulser (alone) with BNC plug- 015-038
and-jack connector fittings.
] §0-ohm termination with BNC plug- 011-049
and-jack connector fittings.
] 50-ohm 10:1 T attenuator, Yow, with 010-314
BNC plug-and-jack connector fittings.
] Connector adapter with UHF-plug 103-015
and BNC-jack connector fittings.
] 50-ohm (nominal impedance} coaxial 012-057
cable, 42'° long, with a BNC connec-
tor on each end.
"If desired any of the foregoing items can be ordered separately
through your local Tektronix Field Engineering Office. When order-
ing, give complete description and part number.
TU-5 Pulser (015-038) characteristics:
Input Voltage Required—+-100-volt (from ground)
square wave capable of supplying 10 ma. The Type
580-series Oscilloscope Amplitude Calibrator fulfills
this requirement. The Type 105 Square-Wave Genera-
tor, item 2, can be used to drive the TU-5 Pulser in
place of the oscilloscope calibrator if a special adapt-
er is used. Use of the Type 105 will provide a brighter
display due to its higher repetition-rate capabilities.
To order the adapter, give this description: TU-5/105
Adapter, Tektronix Part No. 013-075.
Output Voltage—200 millivolts or more into 50 ohms.
Output Pulse Risetime—l.5 nsec or less into a 50-ohm
resistive load such as the 50-ohm termination (011-049).
(4) De voltmeter. Sensitivity of at least 5000 0/v.
(5) SN 3000-Up. 15-pf Input Time Constant standardizer,
2X attenuation, with BNC-plug and UHF-jack connector
fittings, Tektronix Part No. 011-073.
(5) SN 101-2999. 12-pf Input Time Constant Standardizer,
2X attenuation, with BNC-plug and UHF-jack connector
fittings, Tektronix Part No 011-051.
(6) Plug-In Extension, 61." long, Tektronix Part No.
013-055.
(7) Connector Adapter, with UHF-plug and BNC-jack con-
nector fittings, fits UHF-jack and BNC-plug connectors,
Tektronix Part No. 103-015.