CANH/L Diff. V (R)
CANH/L differential (Recessive) shows you the
difference between CANH and CANL for recessive bits:
Why is this measurement important?
Data bits (0's and 1's) are transmitted as differences in
voltage between the CANH and CANL wires. The
differential voltage measurements are essentially a
measurement of "signal quality".
The recessive differential voltage is ideally zero, but
typically is +/- a few millivolts.
A recessive differential voltage that is not sufficiently
close to zero may be mis-interpreted by a transceiver as
a dominant bit - resulting in communication errors.
Display
What it means
Current CANH/L
recessive voltage
differential is 0.09V.
Minimum CANH/L
recessive voltage
differential since the
NetMeter was
plugged in or reset is
0.08V.
Maximum CANH/L
recessive voltage
differential since
NetMeter was
plugged in or reset is
0.09V.
x1
x2
CANH/L diff. V(R) = CANHV(R) - CANLV(R)
Switch
9
11
7
V
250
V
250
MIN
V
250
MAX
7
18
Recessive differential bus
voltage can not be
measured because the
bus is stuck dominant.
