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Model 3314A
3314
17, 500
THERMAL CONVERTER
Performance Tests
AC/OC DIGITAL
VOLTMETER
NEN
50 OHM
FEEDTHRU
TERMINATION
NO CONNECTION
Figure 4-19. Sine Power Flatness Connections
4-20. SINE POWER FLATNESS
This test measures the X3 Output's power level at 30Vpp
and 10kHz. Using this as a power reference, various
power levels are measured at different frequencies to
determine power flatness.
Required Equipment:
AC/DC
Digital Voltmeter
50 Ohm Feedthrough Termination
A 450 Ohm Series Voltage Reducer КЕСТІ ot:
1 4500 resistor, -hp- part number 0698-3510
1V Thermal Converter
Procedure:
A. Preset the 3314A,
B. Set the 3314A as follows:
EBrequenëy
2
eed
dac a ences VER
NES
10kHz
PIN PUES
алалы
ЛАУЫ тан ажа
ІЮУр-р
С. Connect (һе 50 Ohm Feedthrough Termination to
the 3314A's Main Output. Connect the Voltage Reducer
and Thermal Converter to the 3314A's X3 Output as
shown in Figure 4-19.
D. Set the digital voltmeter to measure « 0.007mVdc
and measure and record the thermal converter's output
voltage (Vref).
E. Reduce the 3314A's amplitude to 9.89Vp-p and
record the thermal converter's output voltage (V1 limit).
This corresponds to a 0.1dB change and is the low fre-
quency flatness limit.
F. Reduce the 3314A's amplitude to 9.44Vp-p and
record the thermal converter's output voltage (V2 limit).
This corresponds to a 0.5dB change and is the mid fre-
quency flatness limit.
G. Reduce the 3314A's amplitude to 8.41 Vp-p and:
record the thermal converter's output voltage (V3 limit).
This corresponds to a 1.5dB change and is the high fre-
quency flatness limit.
H. Set the 3314A's amplitude back to 10Vp-p and set
the frequency to each of these values:
20Hz
SOkHz
500kHz
IMHz
I. Measure and record the thermal converter's output
voltage (V20Hz, V50kHz, V500kHz, VIMH2).
J. Voltages V20Hz and VS0kHz should be within this
range:
0.1dB RANGE
=
+ (Vref — V1 limit)
K. Voltage V500kHz should be within this range:
0.5dB RANGE
= Vref + (Vref — V2 limit)
L. Voltage УІ МН
should be within this range:
1.5dB RANGE
= Vref + (Vref — V3 limit)
4-21. HARMONIC DISTORTION
This test measures
the relative harmonic
levels with a
spectrum analyzer.
Required equipment:
Spectrum Analyzer
50 Ohm Feedthrough Termination
A 5000 Feedthrough Termination consisting of:
I 4990 resistor, -hp- part number 0698-4123
4-23
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