NF HSA42011, Instruction Manual

Page: 61 / 86

6.4 Performance Testing
HSA42011 6-5
6.4 Performance Testing
Performance testing is conducted as part of preventive maintenance to prevent performance degradation
of this product. Performance testing is also conducted as part of acceptance inspection, periodic
inspection, performance verification after repair, and so forth.
If the result of a performance testing does not meet the specifications, calibration or repair is required.
This product contains high-voltage parts. Never remove the cover.
All internal inspections of this product are to be performed only by service engineers qualified by
NF Corporation.
 The following measuring instruments are used for performance testing.
Measuring instrument Major performance Recommendation
Signal generator
20 Hz to 1 MHz
Sine wave, 20 Vp-p
WF1947 of NF Corporation
AC voltmeter 10 Hz to 1 MHz, 1 mV to 100 V 3458A of Keysight
DC voltmeter
0 to  100 V
Frequency response
analyzer
10 Hz to 1 MHz FRA51602 of NF Corporation
Oscilloscope
DC to 50 MHz, 10 mV to 100 V MDO3032 of Tektronix
Spectrum analyzer
THD meter 40 Hz to 100 kHz, 0.1%FS 2015 of Keithley
Terminating resistor
50

1%/allowing application of 50 W, and
75

5%/allowing application of 75 W
●
As a terminating resistor (50

), use a pure resistor with a minimum parallel capacitance and
inductance component in the DC to 1 MHz range.
●
For output wiring, use a coaxial cable of 50

not exceeding a total length of 50 cm.
●
Be sure to use a 10:1 probe when connecting an oscilloscope.
●
Be sure to use a 1/100 voltage divider resistance when connecting a spectrum analyzer.

Check the items shown below before conducting a performance testing.
See " 3.5.3 Fine output offset " for the method of fine tuning.

Check that the supply voltage range is 90 V AC to 250 V AC.

Check that the ambient temperature is within the range 5

C to 35

C, and the ambient humidity is
within the range 5% to 85% RH.

Check that there is no condensation.

Check that 30 minutes or more has elapsed after the power has been turned on.
！
WARNING
！
CAUTION