2635A
Users Manual
B-2
AC Signal Cross Talk into an AC Voltage Channel
ACV Error Ratio = VACrms error

VACrms crosstalk Frequency crosstalk

()

() ()×

Range Ratio (worst case) Ratio (typical)
300.00 m 4.8×10-8 v
vHz×
1.4×10-8 v
vHz×
3.0000 V 1.1 ×10-7 v
vHz×
3.0×10-8 v
vHz×
30.000 V 1.2 ×10-6 v
vHz×
2.6×10-7 v
vHz×
150.00/300.00 1.2 ×10-5 v
vHz×
3.4×10-6 v
vHz×
For example, the typical effect on a channel measuring ac volts (300 mV range) by a
220V ac signal at 60 Hz on another channel would be: 220 X 60 X 1.4 X 10-8 = 0.18 mV.
AC Signal Cross Talk into an Ohms Channel
AC Frequency = 50, 60 Hz, ±0.1%
OHMS Error Ratio1 = Ohms error

VACrms crosstalk

()
()

Range Ratio (worst case) Ratio (typical)
300.00 e3.3×10-5 Ohms
Vrms
NoEffect
3.0000 ke2.4×10-6 kOhms
Vrms
6.7×10-7 kOhms
Vrms
30.000ke3.1×10-4 kOhms
Vrms
8.4×10-5 kOhms
Vrms
300.00 ke5.6×10-3 kOhms
Vrms
3.7×10-3 kOhms
Vrms
3.0000 Me3.8×10-4 MOhms
Vrms
3.8×10-5 MOhms
Vrms