TB 9-6625-1935-24
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IV. CALIBRATION PROCESS WITHOUT
POWER METER CALIBRATOR
Preliminary instructions .......................................
Equipment setup ...................................................
Meter accuracy and zero carryover test ...............
Recorder output test ..............................................
Calibration factor test ...........................................
Final procedure......................................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Power Meter, ME-441/U (Agilent, Model 432A) and Agilent, Model 432B. The
manufacturers' manuals were 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. Some models do not contain OPERATE/CALIBRATE switch
A2S1 or variable resistor A2R86. Model 432A is identical to ME-441/U. Some models have
digital indication.
b. Time and Technique. The time required for this calibration is approximately 1
hour, 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
Power
Range: 10 μW to 10 mW FS
+1% on all ranges (0 to +55 C for model 432A (ME-441/U))
Accuracy:
+1% on 10 μW range and +0.5% on 100 μW, 1 and
10 mW ranges for model 432B (20 to 30 C)
Calibration factor
Range: 88 to 100% in 1% steps
Accuracy:
+1% of FS
Recorder output
Range: 1 V
Accuracy:
+0.5% of FS
Zero carryover
<0.5% of FS when zeroed on most sensitive range
