TB 9-6625-2185-24
Table 1. Calibration Description - Continued
Test instrument
parameters
Performance specifications
B. Temperature Uncertainty (at 1 MHz)
continued
Temperature
Instrument
All Sensors
0%
(0 dB)
0% (0 dB)
21q C to 25q C
(reference)
0%
(0 dB)
18q C to 30q C
r 2.32% (0.1 dB)
10q C to 40q C
r0.5% (0.2 dB)
r 4.7% (0.2 dB)
0q C to 55q C
r 0.6% (0.6 dB)
C. Calibration Factor Uncertainty
Uncertainty
Uncertainty
Max
RSS
RSS
GHz
GHz
(%)
(%)
Max
(%)
2
0
0
9
4.0
2.4
0.05
<2
1.3
1.3
10
4.0
2.3
2
3.0
1.7
11
4.0
2.2
3
3.0
1.7
12
4.5
2.8
4
3.5
1.7
13
6.0
3.0
5
3.5
1.7
14
6.0
2.8
6
3.5
1.8
15
6.0
2.8
7
3.5
1.9
16
6.0
2.9
8
4.0
2.0
17
6.0
2.8
----
----
----
18
6.0
3.1
D. Power Reference Uncertainty. Power reference accuracy is r1.2% worst
case for 1 year (0 qC to 55 qC). When calculating the sum of uncertainties,
only include 0.5% for the power reference as the remaining 0.7% is
included in A above.
1
Certified to 0.95%.
2
Reference frequency.
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286; AN/GSM-287; or AN/GSM-705. Alternate items may be used
by the calibrating activity. The items selected must be verified to perform satisfactorily
prior to use and must bear evidence of current calibration. The equipment must meet or
provide a four-to-one ratio between the standard and TI. Where the four-to-one ratio
cannot be met, the actual accuracy of the equipment selected is shown in parenthesis.
5. Accessories Required. The accessories required for this calibration are common
usage accessories, issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure. The following peculiar accessories are also required for this
calibration: Calibration Adapter (7917058); RF Power Amplifier, Antenna Research, Model
757LC (MIS45845).