TB 9-6625-2338-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Digital Delay/Pulse Generator DG535. The manufacturer's manual was used
as the prime data source in compiling these instructions. The equipment being calibrated
will be referred to as the TI (test instrument) throughout this bulletin.
a. Model Variations. Option 3 contains a temperature-controlled crystal oscillator.
b. Time and Technique. The time required for this calibration is approximately 3
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.
Table 1. Calibration Description
Test instrument
parameters
Performance specifications
Time base
10 MHz
Accuracy:
<25 x 10-6 (std), < 1 x 10-6 (option 3)
Delays
Channels:
Four independent delay outputs; A, B, C, and D
Range:
0 to 999.999,999,999,995 seconds
Resolution: 5 ps
Accuracy:
500 ps + time base error X delay
RMS Jitter: Ext. Trig. to any output: 60 ps + delay X 10-8, to any output
(Jitter not verified in this procedure)
Internal rate generator
Rate: Single shot, .001 Hz to 1.000 MHz, or line
Resolution: 0.001 Hz below 10 Hz, otherwise 4 digits
Jitter: 1:10,000 (Jitter not verified in this procedure)
Settling: 2 s at any rate change
Burst Mode: 2 to 32766 pulses per burst integer multiples
(4 to 32767) of the trigger period
Outputs
Selections: 9 ea. (T0, A, B, C, D, AB, AB, CD and CD
Load: 50 : or high impedance
Risetime: ECL; <2 ns TTL; <3 ns
Levels:
ECL;1.8 to .8 V dc, normal or inverted
TTL; 0 to 4 V dc normal or inverted
NIM; .8 to 0 V dc, normal or inverted
VAR; Adjustable offset and amplitude between 3 and
+4 V dc with 4 V maximum step size
Offset: 0.0 10 mV dc
Accuracy:
50 mV + 3% of pulse amplitude
