Owner manual

19.6 Frequency Counter <FREQ COUNT>

This function currently not supported.

20. EMI Test (2651)

20.1 Additional Function for EMI Test

Detection mode (Refer to “13.4 Setting of Detection mode”)

By pushing , the detection mode can be set.

POS SMPL NEG QP AV

In the 2651, QP detection and AV detection are added for EMI measurement.

POS (Positive Peak) : The spectrum of the maximum value between the sample points

SMPL (Sample) : The spectrum of the momentary value between the sample points

NEG (Negative Peak) : The spectrum of the minimum value between the sample points

QP (Quasi Peak) : The spectrum of the quasi peak value between the sample points

AV (Average) : The spectrum of the average value between the sample points

As for QP detection, the following characteristics are chosen according to RBW settings.

(based on CISPR16)

RBW charging

time constant

dis-charging

time constant

meter

time constant

9kHz 1ms 160ms 160ms

120kHz 1ms 550ms 100ms

• Preset (Initialization) (Refer to “18. Save / Load”)

In the 2651, the radiated emission measurement and the conducted emission measurement are added to the

preset as a default setting.

By pushing , the menu is displayed

NORMAL : The initial parameters of normal mode are set.

EMI-C : The initial parameters of conducted emission measurement are set.

EMI-R : The initial parameters of radiated emission measurement are set

In the radiated mission measurement, “USER” is selected as an antenna.

It is necessary to input the compensation data of antenna beforehand.

F6 SWEEP

F6 SAVE/LOAD