Measurement Of The Voltage Drop On The Circuit Section In The Differential Mode (Up To 16- Channels); Differential Connection Of The Transformer (Throttle) Winding With Midpoint And Offset Potential With Respect To Agnd; Example Of Mixed Connection Of Voltage Sources "With Common Ground" And Differential - L-Card L-502-P-G-D-I User Manual

64
6.1.4. Measurement of the voltage drop on the circuit section in the differential
mode (up to 16- channels)
R1
R2
R3
6.1.5. Differential connection of the transformer (throttle) winding with midpoint and
offset potential with respect to AGND
L
6.1.6. Example of mixed connection of voltage sources "with common ground" and
differential.
X1 (X2 -X16)
drop across resistor R2. For a single-channel mode, R1,
R2, R3 can also be impedances of a capacitive or inductive
nature, but with the condition that the circuits X and Y
used are not broken by the direct current of the circuit. In
Y1 (Y2 -Y16)
L-502
multichannel mode, the equivalent impedance referred to
the ADC input must be active. It is necessary that R2
AGND
should not be more than 50 ohms if the switching
frequency is maximal.
X1 (X2 -X16)
R1
L-502
Y1 (Y2 -Y16)
Uсм
AGND
GND3
Дифф.
Diff. VS
ИН
GND2
This connection allows you to measure the voltage
See limitations in section 4.4, p. 44!
Limitations:
|Ucm| ≤ 1 V
Only for the voltage subbands L-502:
±2 V, ±1 V, ±0.5 V, ±0.2 V
X r L-502
Y r
X k
Y k
X (Y )
j j
X (Y )
i i
GND32
GND1
GND