TB 9-6625-2339-35
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Absolute amplitude accuracy
Measured at 50 MHz
Reference level (dBm)
Accuracy (dB)
-20
0.34
1Limited
to 18.0 GHz due to N type input connector.
2N
EQUIPMENT REQUIREMENTS
4. Equipment
Required. Table 2
identifies the
specific equipment to be
used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Sets AN/GSM-287 and 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 exceed the
minimum use specifications listed in table 2. The accuracies listed in table 2 provide a four-
to-one ratio between the standard and TI.
5. Accessories Required. The
accessories required for this
calibration are common
usage accessories issued as indicated in 4 above and are not listed in this calibration
procedure.
Table 2. Minimum Specifications of
Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
Weinschel, Model 9918-10 dB
ATTENUATOR (FIXED)
10 dB:
(9918-( ) dB)
Accuracy: 0.3 dB
ATTENUATOR
Range: 0 to 12 dB
Hewlett-Packard, Model 355C
Frequency: 50 MHz
(7910807)
FUNCTION/ARBITRARY
Frequency range: 50 MHz
Agilent, Model 33250A (33250A)
Amplitude: 0 dBm
Consisting of: Measuring Receiver
MEASURING RECEIVER
Hewlett-Packard, Model 8902A
Accuracy: 300 Hz
(8902A) and Sensor Modules
dBm range: -9.7 to -10.3
Hewlett-Packard, Models 11722A
Accuracy: 0.075 dBm
and 11792A (11722A) (911792A)
Range: 1000 Vdc
John Fluke, Model 8840A/AF
Accuracy: 2 Vdc
(AN/GSM-64D)
Frequency range: 10 MHz to 18 GHz
Wiltron, Model 68369NV (68369NV)
Power range: 0 to -15 dBm
Accuracy: 1.525 dBm