O
X1-X4
TTL
1
2
NC
A+
P
X31
A1
A2
A3
GND
TX1 +
TX1 -
B1
B2
B3
GND
TX2 +
TX2 -
Q
X10
1
2
0 V
Probe ready
9
10
Signal high
/
R
1
L/N
ACU-RITE | DRO 100, DRO 200, DRO 300 | Installation Instructions | 02/2022
3
4
A-
B+
A4
A5
A6
VBUS
CC1
D +
B4
B5
B6
VBUS
CC2
D +
3
4
Signal low
/
11
12
/
Value output
contact
5
6
B-
GND
DC 5 V
A7
A8
A9
D -
SBU1
VBUS
B7
B8
B9
D -
SBU2
VBUS
5
6
/
DC 5 V
13
14
Probe input
Value
output pulse
2
N/L
7
8
R-
A10
A11
RX2 -
RX2 +
B10
B11
RX1 -
RX1 +
7
0 V
0 V
15
0 V
3
9
R+
A12
GND
B12
GND
8
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