Connection To The Adc Input For The Case Where The Common Wire Of The Signal; Sources Has A Offset Potential Ucm Of Max. ± 1 V Relative To The Agnd Circuit; Measurement Of The Voltage Drop On The Circuit Section In The Differential Mode (Up To 16- Channels) - L-Card ADC Series User Manual

6.1.2.4. Differential winding connection
with midpoint
X1 (X2 -X16)
L
R1
Y1 (Y2 -Y16)
Locate R1 close to E-502 input.
Only for E-502 voltage subbands: ±2 V, ±1
V, ±0.5 V, ±0.2 V
6.1.3. Connection to the ADC input for the case where the common wire of the
signal sources has a offset potential
circuit.
6.1.3.1. Connection up to 32 channels.
Mode "with common ground"
X2 (X3-X16, Y1-Y16)
Uвх2 (3-16)
See limitations in section 4.6, p. 412!
6.1.4. Measurement of the voltage drop on the circuit section in the differential
mode (up to 16- channels)
R1
R2
R3
AGND
E-502
X1
Uвх1
E-502
GND32
Uсм
AGND
X1 (X2 -X16)
Y1 (Y2 -Y16)
E-502
AGND
6.1.2.5. Differential winding connection
with midpoint through the divider
L
Locate R1 close to E-502 input.
Only for E-502 voltage subbands: ±2 V, ±1
Ucm of max. ± 1 V
6.1.3.2. Connection up to 16 channels.
"Differential" mode
See limitations in section 4.6, p. 412!
This connection allows you to measure the voltage 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 multichannel
mode, the equivalent impedance referred to the ADC input
must be active. It is necessary that R2 should not be more
than 50 ohms if the switching frequency is maximal.
limitations in section 4.6, p.412!
R2
X1 (X2 -X16)
R1
AGND
R3
Y1 (Y2 -Y16)
V, ±0.5 V, ±0.2 V
relative to the AGND
X2 (X3 -X16)
Uвх2 (3-16)
X1
Uвх1
Y1 (Y2 -Y16)
Uсм
AGND
E-502
E-502
See