TB 9-4931-523-35
APPENDIX A
TEST INSTRUMENT IDENTIFICATION
Nominal
Insertion loss
Accuracy
at 0 dB
Model number
Manufacturer
(dB)
range
(dB)
(dB)
(GHz)
1
≤0.8 dB/100
TG950A
Telonic
0 to 1023
DC to 0.3
MHz
1% or 0.05 dB
DC to 0.05
whichever is
greater
1% or 0.2 dB
0.05 to 0.2
whichever is
greater
0.5/step
0.2 to 0.3
TG950X9
Telonic
See TG950A
U175AFl0DB
Microlab/FXR
10
26.5 to 40
0.3
U175AF20DB
Microlab/FXR
20
26.5 to 40
0.5
≤0.5
V727
Narda
0 to 20
26.5to 40
0 to 10
1.0
1.5
10 to 20
W175A20DB
Microlab/FXR
20
7.05 to 10
0.5
X175A10DB
Microlab/FXR
10
8.2 to 12.4
0.3
Xl75A20DB
Microlab/FXR
20
8.2 to 12.4
0.5
X370B
Hewlett-
6
8.2 to 12.4
20%
Packard
X370C
Hewlett-
10
8.2 to 12.4
20%
Packard
≤1.0
12.4% of
X382A
Hewlett-
10 to 50
8.2 to 12.4
setting or 0.1
(7909033)
Packard
dB whichever is
greater
Y175A10DB
Microlab/FXR
10
12.4 to 18
0.3
Y175A20DB
Microlab/FXR
20
12.4 to 18
0.5
011-0085-00
Tektronix
10
DC to 12.4
1.0
011-0086-00
Tektronix
20
DC to 12.4
1.0
011-0087-00
Tektronix
40
DC to 12.4
1.5
0880-3100
General Radio
6
DC to 12.5
(7913358-1-2)
At DC
0.04
DC to 5
0.3
5 to 12.5
0.4
0880-3110
General Radio
See 0880-3100
(7913358-2-2)
1
Weinschel
See 1-10, 1-20, 1-3,1-30, and 1-6
1-10
Weinschel
10
DC to 12.4
0.5
1-10N(7911956)
Weinschel
10
DC to 12.4
0.5
1-20
Weinschel
20
DC to 12.4
0.5
1-20N
Weinschel
20
DC to 12.4
0.5
1-3
Weinschel
3
DC to 12.4
0.3
1-3N
Weinschel
3
DC to 12.4
0.3
See footnotes at end of table.
A-5