Bnc connectors, Pin scsi connector – Measurement Computing USB-1602HS-2AO User Manual
Page 12
USB-1602HS-2AO User's Guide
Installing the USB-1602HS-2AO
12
BNC connectors
The USB-1602HS-2AO has four BNC connectors used to connect the analog input signals, external pacer clock
input, and external digital trigger input.
Figure 1. BNC connectors
The signal names for the BNC connectors are listed below:
BNC Label
Signal connection
CH0
Analog input 0
CH1
Analog input 1
EXT TRG
External digital trigger input
EXT CLK
External pacer clock input
EXT TRG is equivalent to the DIG TRIG signal on the SCSI connector. EXT CLK is equivalent to the XAPCR
signal on the SCSI connector. Connect your signals using a standard BNC cable.
68-pin SCSI connector
The signals that are available on the 68-pin SCSI connector are listed below.
68-pin SCSI connector pin out
Signal name
Pin
Pin Signal name
DGND
68
34 DGND
(external pacer clock output) XDPCR
67
33
CTR6 Z
(external pacer clock input) XAPCR
66
32 CTR6 B
DIG TRIG
65
31 CTR6 A
TMR/PWM1
64
30 CTR5 Z
TMR/PWM0
63
29 CTR5 B
CTR3
62
28 CTR5 A
CTR2
61
27 CTR4 Z
CTR1
60
26 CTR4 B
CTR0
59
25 CTR4 A
DOUT15
58
24 DIN15
DOUT14
57
23 DIN14
DOUT13
56
22 DIN13
DOUT12
55
21 DIN12
DOUT11
54
20 DIN11
DOUT10
53
19 DIN10
DOUT9
52
18 DIN9
DOUT8
51
17 DIN8
DOUT7
50
16
DIN7
DOUT6
49
15 DIN6
DOUT5
48
14 DIN5
DOUT4
47
13 DIN4
DOUT3
46
12 DIN3
DOUT2
45
11 DIN2
DOUT1
44
10 DIN1
DOUT0
43
9 DIN0
AGND
42
8 AGND
DAC 1
41
7 +5VPWR
DAC 0
40
6 VCAL (reserved for calibration)
AGND
39
5 AGND
Reserved
38
4 Reserved
AGND
37
3 AGND
Reserved
36
2 Reserved
AGND
35
1
AGND
Connect your signals using a CA-68-3R cable, or CA-68-3S or CA-68-6S shielded cable.