Performance Tests Model
8904A
Characteristic
AC Amplitude
Performance
Test
2
Performance Limits Conditions
sine wave
AC AND DC AMPLITUDE ACCURACY (EXCEPT OUTPUT
1
WITH
OPTION
006)
Specification
DC Ampiiude
Range
Accuracy
1
%
3%
100
to
600
kHz
0.1
Hz
to
100
kHz
0
to
flOV
open circuit
f21
mV
or f2.1% whichever
is
higher
Range
Accuracy
0
to
10
vpp
into
50fl
>40
mVpp
into an open circuit
Description
DC
amplitude accuracy
is
measured directly with a voltmeter. Each
6
dl3
attenuation range (down to
the range for
10
mV)
is measured.
To
measure ac amplitude accuracy, a dc signal is applied to the
high-impedance input
of
an
oscilloscope. This amplitude becomes a reference line on the oscilloscope
display. The instrument waveform
is
then
set
to
a
sinusoid with the
same
peak level as the dc reference.
NOTE
This test does
not
verify
ac
amplitude accuracy for Output
1
in
instruments
with Option
006
(balanced output). Refer to Performance Test
4
for that
option. However,
if
the
instrument
has
Option
002
and
006,
perform
the
dc
and ac amplitude accuracy portions of this test for Output
2.
Equipment
Digital Multimeter
................................................................
HP
3478A
Oscilloscope
.....................................................
HP
1740A
or
Tektronix
2235
4-4
Performance Test
2
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