Specifications

PERFORMANCE TESTS
1-7. TEST SIGNAL LEVEL MONITOR ACCURACY TEST
This test verifies that the HP 4285A test signal level monitor accuracy is within
±[(4+O.2xfm)% of reading
+ Vm x 0.002].
(fm:test frequency [MHz], Vm: test signal level setting) The accuracy is specified for an
ambient temperature range of 23 0 C ±5 0 C. The test consists of a Low Frequency Test and
a High Frequency Test.
1· 7 -1. LOW FREQUENCY TEST
MULTIMETER
BNC(f)-dual banana
plug Adapter
o l::lI:JOOOCJ
OClCOCJO
CO ecce o~t=1p---1
~ ~ ~!;~~ OG
oc cooo 000
BN C(m)-B N C(m)
Cable 61 em ______
HP 4285A
D~
OOOOOOO:
o ODD'
OM 0
o 00000
o 0 DODD 0
o 0 I = I
INTERFACE BOX
DC BIAS
TEST SIGNAL
Figure 1-2. Test Signal Level Monitor Accuracy Test Setup
using an Interface Box
MULTIMETER
00
00
Cable 61 em
* Direct connection no cable
HP 4285A
I DII~ oo~oorn
B 0 DOD lhJ
o 10 01 DOD
o 0 ~ODD 0
BNC(m)-BNC{m)
Cable 30 em
Adapter
.
o 0 I = I
BNC{m)-BNC{m)
Cable 30 em
Figure 1-3. Test Signal Level Monitor Accuracy Test Setup
without an Interface Box
NOTE
The length of the BNC to BNC cables used in this test should be
~ 61 em.
1·6