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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.
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