Usb active led (act), Power led (pwr), Main connector and pin out – Measurement Computing USB-1608HS-2AO User Manual
Page 14: Usb connector, Eight digital input connections, Eight digital output connections, Four analog output connections, Covering two dac channels—only two connections, One external event counter connection, One voltage connection
USB-1608HS-2AO User's Guide
Functional Details
14
USB active LED (ACT)
The
ACT
LED indicates the communication status of the USB-1608HS-2AO. The table below defines the
function of the
ACT
LED.
LED Illumination
LED Illumination
Indication
Steady green
The USB-1608HS-2AO is connected to a computer or external USB hub.
Blinks continuously
Data is being transferred.
Power LED (PWR)
The PWR LED lights up when the USB-1608HS-2AO is receiving +5 V of power from the AC power adapter.
Main connector and pin out
Connector type
Screw terminal
Wire gauge range
16 AWG to 30 AWG
The USB-1608HS-2AO has one row of screw terminals that provide the following connections:.
16 analog input connections (
CH0_L
to
CH7_L
and
CH0_H
to
CH7_H
) covering eight analog input
channels.
10 analog ground connections (
AGND
)
Eight digital input connections (
DI0
to
DI7
)
Eight digital output connections (
DO0
to
D07
)
Four analog output connections (
VDAC0_F
,
VDAC0_S
,
VDAC1_F
,
VDAC1_S
) covering two DAC
channels—only two connections (
VDAC0_F
and
VDAC1_F
) needed if remote sensing is disabled
One external trigger source (
TRIG_IN
)
Two SYNC terminals for external clocking and multi-unit synchronization (
SYNC_IN
and
SYNC_OUT
)
One external event counter connection (
CTR
)
One voltage connection (
+5 V EXT
)
Three digital ground connections (
GND
)
Signals are identified in Figure 4.
Figure 4. USB-1608HS-2AO screw terminal functions
USB connector
The USB connector is on the rear of the USB-1608HS-2AO. This connector provides communication..
1
1
GN
D
2
DI0
3
DI1
4
DI2
5
DI3
6
DI4
7
DI5
8
DI6
9
DI7
10
GN
D
11
D
O0
12
D
O1
13
D
O2
14
D
O3
15
D
04
16
D
O5
17
D
O6
18
D
O7
19
GN
D
20
SYN
C
_
IN
21
SYN
C
_O
U
T
22
+5
V
EXT
23
C
T
R
24
T
R
IG_
IN
25
VD
A
C
0_F
26
VD
A
C
0_S
27
A
G
N
D
28
VD
A
C
1_F
29
VD
A
C
0_S
30
A
G
N
D
31
C
H
0_L
32
C
H
0_H
33
A
G
N
D
34
C
H
1_L
35
C
H
1_H
36
A
G
N
D
37
C
H
2_L
38
C
H
2_H
39
A
G
N
D
40
C
H
3_L
41
C
H
3_H
42
A
G
N
D
43
C
H
4_L
44
C
H
4_H
45
A
G
N
D
46
C
H
5_L
47
C
H
5_H
48
A
G
N
D
49
C
H
6_
L
50
C
H
6_H
51
A
G
N
D
52
C
H
7_L
53
C
H
7_H
54
A
G
N
D