Amplitude Accuracy
This procedure tests the amplitude accuracy of the
HP
E1440A
AC-function output signals.
Specifications
See Chapter
1
Equipment Required
AC/DC Digital Voltmeter
High Speed Digital DC Voltmeter
Analog Oscilloscope
50
R Feedthru Termination
Power Meter
Power Sensor
Resistor 500 R
2
W
1%
Resistor 475 R
2
W
1%
Resistor 50 R 118
W
1%
Capacitor 300 pF
5%
Note
After each new amplitude setting you must perform an amplitude
calibration:
OUTPUT
Vxi
;
I'
:
CAL?"
Amplitude Accuracy at Frequencies upto
100
kHz
Procedure
I
1.
Sine
wave
Test.
Connect the HP E1440A signal output through a
5032 feedthru termination to the AC digital voltmeter input.
2.
Set the HP E1440A as follows:
High-Voltage Output
Off
Function
Sine
Frequency 100 Hz
Amplitude 3.536 Vrms (10
V(p-p))
DC Offset
0 V
OUTPUT
Vxi
;
"
:
OUTP
:
AMPL OFF
;
:FUNC
S1N;:FREQ
1E2;
:VOLT
:
AMPL 10
;
:VOLT:OFFS 0;
:
CAL?
"
3.
Read the AC voltmeter. Change the HP E1440A frequency to
1
kHz and 100 kHz and repeat.
OUTPUT
Vxi
;
"
:
FREQ 1E3"
OUTPUT
Vxi
;
:
FREQ
IE5"
Verify that
all
three voltmeter readings are between 3.455 and
3.617 Vrms
(f
0.2 dB).
C-22
Performance tests
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