TB 9-4931-523-24
Table 1. Minimum Specifications of Equipment Required Continued
Manufacturer and model
Common name
Minimum use specifications
(part number)
POWER SENSOR
Frequency range: 10 MHz to 26.5 GHz
Agilent, Model E9304AH18
(E9304AH18), and power sensor,
Power range: 0 to -70 dBm
Agilent, Model 8485D (8485D) with 30
Accuracy: dB/10 dB
dB attenuator, Agilent, Model 11708A
(11708A)
POWER SPLITTER
Frequency range: 10 MHz to 26 GHz
Anritsu, Model K241C (K241C)
Insertion loss: 6 dB -0.2 + 1.5 dB
SYNTHESIZED SIGNAL
Frequency range: 0.01 to 26.5 GHz
Anritsu, Model 68369NV (68369NV)
Power output: +8 dBm, 1dB
CALIBRATION PROCESS
6. Preliminary Instructions
a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 1.
c. This calibration bulletin contains information and techniques for the calibration of
attenuators from 10 MHz to 26.5 GHz.
d. Attenuators with specifications below 10 MHz should use the techniques presented
in TB 9-6625-2181-24.
7. Equipment Setup
a. Refer to TI as listed in appendix and evaluate TI for connector type, impedance, and
frequency range. Determine and record at least 10 equally spaced frequency test points.
NOTE
The calibration frequencies attached to TI or test report
furnished with TI may be used if desired.
b. Refer to TI type and frequency range for performance paragraph as listed in (1)
through (2) below:
(1) Fixed attenuator with frequency range between 10 MHz and 26.5 GHz refer
to d below.
(2) Variable attenuator with frequency range between 10 MHz and 26.5 GHz refer
to d below.
NOTE
The insertion loss measurements for attenuators listed in the
appendix are considered adequate for determining their
accuracy and serviceability.
