Type 1A1
SECTION 6
PERFORMANCE CHECK
Change information, if any, affecting this section can be found at the
rear of the manual.
Introduction
This performance check is provided to check the opera
tion of the Type 1A1 without removing the side or bottom
covers from the oscilloscope. This procedure may be used
for incoming inspection, instrument familiarization, reliability
testing, calibration verification, etc.
Failure to meet the characteristics given in this procedure
indicates that the unit requires internal checks and/or ad
justments. See the Calibration section of this Instruction
Manual.
TEST EQUIPMENT AND ACCESSORIES
General
The following equipment (items 1 through 4) is recommend
ed for a complete performance check. Specifications given
are the minimum necessary to perform this procedure. All
equipment is assumed to be calibrated and operating with
in the original specifications. If equipment is substituted, it
must meet or exceed the specifications of the recommended
equipment.
For the most accurate performance check, use the acces
sories (items 5 through 4) described in this list. The calibra
tion fixtures that have a Tektronix part number are avail
able from Tektronix, Inc. Order by description and part
number from your local Tektronix Field Office or representa
tive.
Test Equipment
1. Calibrated Type 544, 546, 547, or 556 Oscilloscope.
For use with the Type 1A1 Plug-In Unit being checked:
NOTE: The Type 547 was used when preparing this pro
cedure.
2. Standard amplitude calibrator. Amplitude accuracy,
within 0.25%; signal amplitude 20 mV to 100 V; output sig
nal, 1-kHz square wave. Tektronix calibration fixture No.
067-0502-00 recommended.
3. Square-wave generator. Frequency, 2.5 kHz and 100
kHz; risetime, 20 ns or faster from the .high-amplitude out
put; 1 ns or faster from the fast-rise output. High-amplitude
output; variable from 0.5 V to 12 V into a 50-ohm load, about
7 V to 120 V with no external load. Fast-rise output: vari
able from 50 mV to 500 mV into a 50-ohm load. Tektronix
Type 106 Square-Wave Generator recommended.
4. Constant amplitude sine-wave generator. Frequency,
50 kHz, and 50 MHz; output amplitude, 20 mV to 300 mV
peak to peak into a 50-ohm load. Amplitude accuracy with
in ± 3 % at 50 MHz using the amplitude at 50 kHz for a
reference. Tektronix Type 191 Constant Amplitude Signal
Generator recommended.
Accessories
5. Input capacitance normalizer. Time constant, 1 meg
ohm X 15 pF; attenuator 2 X ; connectors, BNC. Tektronix
Part No. 067-0537-00.
6
. In-line termination.
Impedance, 50 ohm; accuracy,
within ± 3 % ; connectors, GR input with BNC male output.
Tektronix Part No. 017-0083-00.
(Supplied with items 3
and 4).
7. 10X attenuator. Impedance, 50 ohm.s; accuracy, with
in ± 3 % ; connectors, GR-Type. Tektronix Part No. 017-
0079-00.
8
. Adapter, GR to BNC male. Tektronix Part No. 017-
0064-00.
9. BNC T connector. Tektronix Part No. 103-0030-00.
10. Coaxial cable. Impedance, 50 ohms; Type RG8/213;
length, five nanoseconds; connectors, GR874. Tektronix Part
No. 017-0502-00. Supplied with items 3 and 4.
11. Coaxial cable. Impedance, 50 ohms; length, 42 inches;
connectors, BNC. Tektronix Part No. 012-0057-01.
12. Coaxial cable. Impedance, 50 ohms; length 18 inches;
connectors, BNC. Tektronix Part No. 012-0076-00.
13. Patch cord. Red; BNC male connector on one end,
banana plug on other end; 18 inches long. Tektronix Part
No. 012-0091-00.
14. Small screwdriver with a
%
inch wide tip to fit screw
driver-adjust potentiometers.
PERFORMANCE CHECK PROCEDURE
General
In the following procedure, test equipment connections
or control settings should not be changed except as noted.
If only a partial check is desired, refer to the preceding
step(s) for setup information.
The following procedure used the equipment listed under
Recommended Equipment and Calibration Fixtures. If sub
stitute equipment and accessories are used, control settings
or setup must be altered to meet the requirements of the
equipment used.
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