Specifications

PERFORMANCE TESTS
1-13. VOLTAGE RATIO MONITOR ACCURACY TEST (OPTION 002 ONLY)
This test verifies that the HP 4285A voltage Ratio Monitor accuracy is within ± 1 %. The
accuracy is specified for an ambient temperature range
of 23 0 C ±5 0 C.
NOTE
The detailed voltage ratio monitor specification is described in the HP 42851A
Operation
Manual.
HP 4285A Accessory Control IF Cable
I DI I~ oo~oo fI
8 M 000 lkJ
o 0 0 CJCJ CJ
o 0 CJCJoo 0
o o~ 0 0 I = I
BNC(m)-BNC(m)
Cable.
30 cm
BNC(f}-N(m)
.0. _____ Adapter
BNCIf}-N(m) ~
Adapter ~ A 8-
-u 20 dB Attenuator
d=J
Step Attenuator
HP 42851A
D
Figure 1-16. Voltage Ratio Monitor Accuracy Test Setup
EQUIPMENT:
Q Adapter
Step Attenuator
20 dB Attenuator
BNC(m)-BNC(m) Cable, 30 cm
BNC(f)-N(m) Adapter
PROCEDURE:
HP 42851A
HP 8495A Option 001, H04
HP 8491A Option 020
HP PN 8120-1838, 2 ea.
HP PN 1250-0780
1. Set up the equipment as shown in Figure 1-16. The H P 4285A is connected to
the HP 42851A, using the Q Adapter Control Interface Cable.
2. Press the CATALOG/SYSTEM MENU key and the 'SYSTEM CONFIG' softkey to
display the SYSTEM CON FIG page.
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