Filter
Top Products
PERFORMANCE TESTS
MODEL
8559A
PERFORMANCE
TESTS
4
-
22. INPUT ATTENUATOR ACCURACY
SPECIFICATION:
Step Accuracy
(0 dB to
60
dB):
<
k
1.0 dB per 10
-
dB step, 0.01 to 18.0
GHz
Maximum Cumulative Step Error (0 dB to
60
dB):
<
2.4 dB, 0.01 to 18.0
GHz
DESCRIPTION:
The input attenuator accuracy is tested over the range of
0 to
60
dB using an
RF
substitution method. A step
attenuator that has been calibrated at 30 MHz by a Standards Laboratory is used for substitution. The known
error of the calibrated attenuator is taken into account when computing the input attenuator accuracy.
SPECTRUM
ANALYZER
SIQNAL QENERATOR
RF
OUTPUT
(
ADAPTER
Q
STEP
ATTENUATOR
FIGURE
4
-
17.
INPUT ATTENUATOR ACCURACY TEST SETUP
EQUIPMENT:
(j
10
dB
ATTENUATOR
SignalGenerator
.........................................................
HP8640B
Step Attenuator (10 dB/step)
......................................
HP 355D, Opt. H82
10
-
dB Attenuztor
................................................
HP 8491B, Opt. 010
Adapter, Type N
(m)
to BNC
(f)
(2 required)
...............................
HP 1250
-
0780