Sanwa PC5000a - Page 13

D-1034-143a PC5000（E）
DRAWING No. PC5000a 07-0812 2040 6010
2π
――
τ
2π
――
τ
τ
2π
―― •Vp
Sine Wave
Square Wave
Triangular Wave
Puls
Input Waveform
Peak
Vp
RMS
Vrms
Average
Vavg
CF
Vp/Vrms
Form Factor
Vrms/Vavg
Vp Vp Vp 1 1
Vp
0
π 2π
Vp
0
π
2π
Vp
0
π
2π
Vp
0
τ
2π
=1.414Vrms =0.707Vp =0.637Vp =1.414 =1.111
=1.732Vrms =0.577Vp =0.5Vp =1.732 =1.155
Vrms･󰵫2
Vp
――
󰵫2
2Vp
――
π
󰵫2
π
――
2󰵫2
Vrms･󰵫3
Vp
――
󰵫3
Vp
――
2
󰵫3
2
――
󰵫3
Vp
τ
2π
Please note the measurement should be taken at the crest
factor below 5.
NMRR (Normal Mode Rejection Ratio)
NMRR is the DMM's ability to reject unwanted AC noise effect,
which causes inaccurate DC measurements. NMRR is typically
specified in terms of dB (decibel). This series has a NMRR
specification of >60dB at 50 and 60Hz, which means a good
ability to reject the effect of AC noise in DC measurements.
CMRR (Common Mode Rejection Ratio)
Common mode voltage is voltage present on both the COM
and VOLTAGE input terminals of a DMM, with respect to
ground. CMRR is the DMM's ability to reject common mode
voltage effect, which causes digit rattle or offset in voltage
measurements. The CMRR function of this meter is activated at
>90 dB at DC to 60 Hz with the ACV measuring function, and at
>120 dB at DC or 50/60 Hz with the DCV measuring function.
—
10
—
―― •Vp