CH Tech VX402C-64 Automobile Accessories User Manual


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17
A one-to-one cable that connects Pin 1 (C32) on the VXI side to Pin 1 (C32) on the VME side,
and so on, could only be used if the VME module was designed to meet all of the VXI bus
specifications for these pins. If the installed VME module can not handle -24V, +24V, -5.2V or
any other signal on the corresponding pin, then a one-to-one cable can not be used.
The signal list for both the VXI side and the VME side is shown in Table II. The pass-through
connectors on the PCB are standard 64-pin (32x2) shrouded headers, specifically Samtec TST-
132-01-S-D. Mating connectors are very common in both IDC and discreet wire varieties.
Table II. VXI/VME Pass-Through Connections
VXI SIDE PASS-THROUGH CONNECTOR
VME SIDE PASS-THROUGH CONNECTOR
PIN P2 SIGNAL PIN P2 SIGNAL PIN P2 SIGNAL PIN P2 SIGNAL
1
3
5
7
9
C32
C31
C30
C29
C28
-24V
+24V
GND
RSV3
GND
2
4
6
8
10
A32
A31
A30
A29
A28
SUMBUS
GND
MODID
RSV2
GND
1
3
5
7
9
C32
C31
C30
C29
C28
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
2
4
6
8
10
A32
A31
A30
A29
A28
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
11
13
15
17
19
C27
C26
C25
C24
C23
TTLTRG7*
TTLTRG5*
GND
TTLTRG3*
TTLTRG1*
12
14
16
18
20
A27
A26
A25
A24
A23
TTLTRG6*
TTLTRG4*
+5V
TTLTRG2*
TTLTRG0*
11
13
15
17
19
C27
C26
C25
C24
C23
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
12
14
16
18
20
A27
A26
A25
A24
A23
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
21
23
25
27
29
C22
C21
C20
C19
C18
GND
LBUSC11
LBUSC10
-5.2V
LBUSC09
22
24
26
28
30
A22
A21
A20
A19
A18
GND
LBUSA11
LBUSA10
-5.2V
LBUSA09
21
23
25
27
29
C22
C21
C20
C19
C18
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
22
24
26
28
30
A22
A21
A20
A19
A18
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
31
33
35
37
39
C17
C16
C15
C14
C13
LBUSC08
GND
LBUSC07
LBUSC06
-2V
32
34
36
38
40
A17
A16
A15
A14
A13
LBUSA08
GND
LBUSA07
LBUSA06
-5.2V
31
33
35
37
39
C17
C16
C15
C14
C13
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
32
34
36
38
40
A17
A16
A15
A14
A13
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
41
43
45
47
49
C12
C11
C10
C9
C8
LBUSC05
LBUSC04
GND
LBUSC03
LBUSC02
42
44
46
48
50
A12
A11
A10
A9
A8
LBUSA05
LBUSA04
GND
LBUSA03
LBUSA02
41
43
45
47
49
C12
C11
C10
C9
C8
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
42
44
46
48
50
A12
A11
A10
A9
A8
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
51
53
55
57
59
C7
C6
C5
C4
C3
GND
LBUSC01
LBUSC00
-5.2V
GND
52
54
56
58
60
A7
A6
A5
A4
A3
-5.2V
LBUSA01
LBUSA00
GND
ECLTRG1
51
53
55
57
59
C7
C6
C5
C4
C3
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
52
54
56
58
60
A7
A6
A5
A4
A3
USER DEF
USER DEF
USER DEF
USER DEF
USER DEF
61
63
C2
C1
CLK10-
CLK10+
62
64
A2
A1
-2V
ECLTRG0
61
63
C2
C1
USER DEF
USER DEF
62
64
A2
A1
USER DEF
USER DEF
To use the VXI TTLTRG signals, a custom cable should be used that connects each TTLTRG
signal to the desired VME P2 connector signal. The VX402C-64 has a set of eight switches that
are set to specify the direction of the trigger signal as shown Figure 6. If the trigger signal is an
input to the VME module, the switch should be ON (closed). If the trigger signal is output from
the VME module, the switch should be OFF (open).
C&H Technologies, Inc. <> 445 Round Rock West Drive <> Round Rock, TX 78681 <> www.chtech.com
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