TB 9-6625-2142-40
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SECTION
CALIBRATION PROCESS FOR SAMPLING
SWEEP UNIT TD-1161/U (TEKTRONIX,
TYPES 7T11 AND 7T11A)
Preliminary instructions .....................................
Equipment setup .................................................
Horizontal timing ................................................
Triggering ............................................................
Power supply .......................................................
Final procedure ...................................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Sampling Unit AM-6787/U (Tektronix, Type 7S11) and Sampling Sweep Unit
TD-1161/U (Tektronix, Types 7T11 and 7T11A). The manufacturers' manuals were used as
the prime data sources in compiling these instructions. The equipment being calibrated
will be referred to as the TI (test instrument) throughout this bulletin.
a. Model Variations. None.
b. Time and Technique. The time required for this calibration is approximately 4
hours, using the dc and low frequency technique.
2. Forms, Records, and Reports
a. Forms, records, and reports required for calibration personnel at all levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
Test instrument
parameters
Performance specifications
Sampling Unit AM-6787/U (Tektronix, Type 7S11)
Range: 2 to 200 units/div in seven steps in 1, 2, 5 sequence
Vertical deflection
Gain accuracy: 3% in NORMAL mode; 6% in SMOOTH mode
Variable range: Varies displayed amplitude from <0.5 to >2.5 times calibrated
displayed amplitude
Dc offset:
Range: +1 to -1 V or more1
Displayed
Measured
Offset out: +10 to -10 V or more
Offset out = (10) (displayed offset) 2%
Relationship
Delay range
At least 10 ns
See footnote at end of table.