TB 9-6625-2250-35
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Marker amplitude accuracy
Measured at 300 MHz
Reference levels (dBm)
Accuracy (<dB)
0
3.3
-10
3.3
-40
3.3
-50
3.3
1Limited
to 18.0 GHz due to N type input connector.
2N
is the harmonic mixing mode.
3Procedure limits of 5 GHz
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-287. 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
standard and TI.
usage accessories issued as indicated in 4 above and are not listed in this calibration
procedure.
Manufacturer and model
Common name
Minimum use specifications
(part number)
Weinschel, Model 9918-6 dB (9918-6
ATTENUATOR (FIXED)
6 dB:
dB), Model 9918-10 dB (9918-10 dB)
Frequency range: 50 MHz to 18 GHz
and Model 9918-20dB (9918-20 dB)
Accuracy: 0.3 dB
10 dB:
Frequency range: 50 MHz to 18 GHz
Accuracy: 0.5 dB
20 dB:
Frequency range: 50 MHz to 18 GHz
Accuracy: 0.5 dB
ATTENUATOR NO. 1
Range: 0 to 12 dB
Hewlett-Packard, Model 355C
Frequency: 50 MHz
(7910807)
Hewlett-Packard, Model 355D (355D)
ATTENUATOR NO. 2
Range: 0 to 60 dB
Frequency: 300 MHz
Accuracy with correction report:
0.825 dB
