HP 3314A - Page 56

Model 3314A
Performance Tests
3314
AC/DC
DIGITAL
VOLTMETER
OUT \ f~J
\ 'I 3V THERMAL
\ CONVERTER
,'----------------_./
L It Lj[
l[utlEJ
!lLL LI
~ ~ v ~ ~ ~
LLLLLL
"
[L L L LI
*.. l,. t.. \.. t.. "
LLLLLL
[""""I[""""I~
@l L L L ~ e L @ ~LL
\-=
Figure 4·14. Sine Wave Power Flatness
B. Set the 3314A as follows:
Amplitude , , , . , . , , , 7.5Vp-p
Frequency , . . .
. . . .. 10kHz
C. Set the Voltmeter as follows:
Range
.. , , ,......... 1
Function ,
.. , . . . .. DC
Trigger , . , , ,
.. Internal
I. Repeat steps G & H for the 3314A frequency set-
tings given below:
50kHz
800kHz
IMHz
5MHz
19.99MHz
J. Set the amplitude of the 3314A to 7.5Vp-p and the
frequency to 10kHz.
CAUTION
K. Note and record the voltage reading on the DIgital
Voltmeter.
Double check the 3314A Signal Amphtude.
The input signal to the Thermal Converter
must not exceed 3V RMS (8l'p-p).
L. Using the data taken in steps E & K, calculate the
reference drift
of the 3314A using the equation given
below:
D. Connect the 3314A to the Thermal Converter
and
the Digital Voltmeter as shown in Figure 4-14.
E. Record the voltage measured on the Digital
Voltmeter. This is the reference voltage for the 7.5Vp-p
3314A setting.
Drift(dB)
= 20 Log I(Step K Reference/Step E
Reference)
I
M. If Drift(dB) is < O.025dB, the data taken In steps
F,G,H, and I is acceptable. Proceed to step O.
F. Set the frequency on the 3314A to 100Hz.
G. Carefully adjust the amplitude on the 3314A until
the voltage measured on the Digital Voltmeter is equal
to the reference voltage recorded in step E.
N.
If Drift(dB) is > 0.025dB. the data taken in steps
F.G.H. and I is unacceptable. Repeat steps A through
L. If the test fails again, perform the Amplitude Ac-
curacy Test for amplitude verification and repeat
Flatness test.
H. Record the 3314A's displayed amplitude (in Vp-p)
in the appropriate section
of Table 4-8 in the Perfor-
mance Test Record.
O. Disconnect the Thermal Converter from the
3314A.
4-17