TB 9-6625-2344-35
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
calibration of Oscilloscope OS-303/G. The manufacturers service manual and TM 43-6625-
915-40 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 3
hours, using the dc and low frequency technique.
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).
pertain to this calibration are listed in table 1.
Test instrument
parameters
Performance specifications
Vertical gain
Dual cursor measurement: (gain accuracy + resolution)
Resolution: 0.4% full scale without averaging, 0.024% full scale with 32 averages
Accuracy: 1.00% of full scale at full resolution channel scale
Vertical offset
Accuracy: 1.25% of channel offset + 2% of full scale
Dc to 600 MHz
Time measurements
Equivalent time: ( ≥16 averages)
[(0.005% x ∆t) + (full scale/(2 x memory depth)) + 60ps]
[(0.005% x ∆t) + (0.2 x sample period)]
Real time:
Trigger sensitivity
Internal: dc to 100 MHz; 0.5 div
100 MHz to 500 MHz; 1.0 div
>500 MHz; 1.5 div
Auxiliary: dc to 500 MHz; 300 mV p-p
Dc calibrator
Amplitude: -2.4 V to +2.4 V
Accuracy: 0.2% of ∆V output
