PXIe-2515 Overview

PXIe-2515 Front Panel

Front Panel


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Table 1. Front Panel
Callout Description
1 Bus A connector
2 Bus B connector
3 HSDIO connector
4 DUT connector

HSDIO (Left) Connector

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Table 2. Signal Descriptions
Signal Description
CHx Signal connection
CTRLx Control connection
GND Ground connection
RES0 Reserved, do not connect
No connection
Notice Do not connect to Res0. Res0 is reserved for future use.
Notice Use only the NI SHC68-C68-D5 cable to connect the supported NI high-speed DIO device to the module. The cable translates the pinout of the supported NI high-speed DIO device to the HSDIO connector on the module so that the pinout of the DUT connector on the module matches that of the supported NI high-speed DIO device.
Note ctrl0, ctrl2, and ctrl3 do not route through relays, but rather pass through from the left connector to the right connector. These channels cannot be connected to the analog bus channels, busa and busb.

DUT (Right) Connector


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Table 3. Signal Descriptions
Signal Description
CTRLx Control connection
DUTx DUT connection
DUTCTRLx DUT control connection
GND Ground connection
RES0 Reserved, do not connect
No connection

Pin Associations

The PXIe-2515 is recommended for use with the NI 6535/6536/6537, the NI 654x, the NI 655x, and the NI 6581 high-speed DIO modules, using the designated cable for connection between the module and the supported NI high-speed DIO device. Refer to the following tables for corresponding signals on the PXIe-2515 and supported high-speed DIO devices.

Table 4. 6535/6536/6537 and 6515 Pin Associations
6535/6536/6537 Connector 6515 HSDIO (Left) Connector 6515 DUT (Right) Connector
Pin Channel Pin Channel Pin Channel
1 P3.7 34 ch31 1 dut31
2 GND 33 GND 2 GND
3 P3.5 32 ch29 3 dut29
4 GND 31 GND 4 GND
5 P3.3 30 ch27 5 dut27
6 GND 29 GND 6 GND
7 P3.1 28 ch25 7 dut25
8 RESERVED 27 NO CONNECT 8 NO CONNECT
9 P2.7 26 ch23 9 dut23
10 GND 25 GND 10 GND
11 P2.5 24 ch21 11 dut21
12 GND 23 GND 12 GND
13 P2.3 22 ch19 13 dut19
14 GND 21 GND 14 GND
15 P2.1 20 ch17 15 dut17
16 GND 19 GND 16 GND
17 P1.7 18 ch15 17 dut15
18 GND 17 GND 18 GND
19 P1.5 16 ch13 19 dut13
20 GND 15 GND 20 GND
21 P1.3 14 ch11 21 dut11
22 GND 13 GND 22 GND
23 P1.1 12 ch9 23 dut9
24 GND 11 GND 24 GND
25 P0.7 10 ch7 25 dut7
26 PFI 1 9 ctrl1 26 dutctrl1
27 P0.5 8 ch5 27 dut5
28 GND 7 GND 28 GND
29 P0.3 6 ch3 29 dut3
30 PFI 3 5 ctrl3 30 ctrl3
31 P0.1 4 ch1 31 dut1
32 GND 3 GND 32 GND
33 PFI 4 2 ctrl4 33 dutctrl4
34 GND 1 GND 34 GND
35 P3.6 68 ch30 35 dut30
36 GND 67 GND 36 GND
37 P3.4 66 ch28 37 dut28
38 GND 65 GND 38 GND
39 P3.2 64 ch26 39 dut26
40 GND 63 GND 40 GND
41 P3.0 62 ch24 41 dut24
42 GND 61 GND 42 GND
43 P2.6 60 ch22 43 dut22
44 GND 59 GND 44 GND
45 P2.4 58 ch20 45 dut20
46 GND 57 GND 46 GND
47 P2.2 56 ch18 47 dut18
48 GND 55 GND 48 GND
49 P2.0 54 ch16 49 dut16
50 GND 53 GND 50 GND
51 P1.6 52 ch14 51 dut14
52 PFI 0 51 ctrl0 52 dutctrl0
53 P1.4 50 ch12 53 dut12
54 GND 49 GND 54 GND
55 P1.2 48 ch10 55 dut10
56 GND 47 GND 56 GND
57 P1.0 46 ch8 57 dut8
58 GND 45 GND 58 GND
59 P0.6 44 ch6 59 dut6
60 RESERVED 43 Res0 60 Res0
61 P0.4 42 ch4 61 dut4
62 GND 41 GND 62 GND
63 P0.2 40 ch2 63 dut2
64 PFI 2 39 ctrl2 64 ctrl2
65 P0.0 38 ch0 65 dut0
66 GND 37 GND 66 GND
67 PFI 5 36 ctrl5 67 dutctrl5
68 GND 35 GND 68 GND
Table 5. 654x and 6515 Pin Associations
654x Connector 6515 HSDIO (Left) Connector 6515 DUT (Right) Connector
Pin Channel Pin Channel Pin Channel
1 DIO 31 34 ch31 1 dut31
2 GND 33 GND 2 GND
3 DIO 29 32 ch29 3 dut29
4 GND 31 GND 4 GND
5 DIO 27 30 ch27 5 dut27
6 GND 29 GND 6 GND
7 DIO 25 28 ch25 7 dut25
8 RESERVED 27 NO CONNECT 8 NO CONNECT
9 DIO 23 26 ch23 9 dut23
10 GND 25 GND 10 GND
11 DIO 21 24 ch21 11 dut21
12 GND 23 GND 12 GND
13 DIO 19 22 ch19 13 dut19
14 GND 21 GND 14 GND
15 DIO 17 20 ch17 15 dut17
16 GND 19 GND 16 GND
17 DIO 15 18 ch15 17 dut15
18 GND 17 GND 18 GND
19 DIO 13 16 ch13 19 dut13
20 GND 15 GND 20 GND
21 DIO 11 14 ch11 21 dut11
22 GND 13 GND 22 GND
23 DIO 9 12 ch9 23 dut9
24 GND 11 GND 24 GND
25 DIO 7 10 ch7 25 dut7
26 PFI 1 9 ctrl1 26 dutctrl1
27 DIO 5 8 ch5 27 dut5
28 GND 7 GND 28 GND
29 DIO 3 6 ch3 29 dut3
30 PFI 3 5 ctrl3 30 ctrl3
31 DIO 1 4 ch1 31 dut1
32 GND 3 GND 32 GND
33 DDC CLK OUT 2 ctrl4 33 dutctrl4
34 GND 1 GND 34 GND
35 DIO 30 68 ch30 35 dut30
36 GND 67 GND 36 GND
37 DIO 28 66 ch28 37 dut28
38 GND 65 GND 38 GND
39 DIO 26 64 ch26 39 dut26
40 GND 63 GND 40 GND
41 DIO 24 62 ch24 41 dut24
42 GND 61 GND 42 GND
43 DIO 22 60 ch22 43 dut22
44 GND 59 GND 44 GND
45 DIO 20 58 ch20 45 dut20
46 GND 57 GND 46 GND
47 DIO 18 56 ch18 47 dut18
48 GND 55 GND 48 GND
49 DIO 16 54 ch16 49 dut16
50 GND 53 GND 50 GND
51 DIO 14 52 ch14 51 dut14
52 RESERVED 51 ctrl0 52 dutctrl0
53 DIO 12 50 ch12 53 dut12
54 GND 49 GND 54 GND
55 DIO 10 48 ch10 55 dut10
56 GND 47 GND 56 GND
57 DIO 8 46 ch8 57 dut8
58 GND 45 GND 58 GND
59 DIO 6 44 ch6 59 dut6
60 RESERVED 43 Res0 60 Res0
61 DIO 4 42 ch4 61 dut4
62 GND 41 GND 62 GND
63 DIO 2 40 ch2 63 dut2
64 PFI 2 39 ctrl2 64 ctrl2
65 DIO 0 38 ch0 65 dut0
66 GND 37 GND 66 GND
67 STROBE 36 ctrl5 67 dutctrl5
68 GND 35 GND 68 GND
Table 6. 6551/6552 and 6515 Pin Associations
6551/6552 Connector 6515 HSDIO (Left) Connector 6515 DUT (Right) Connector
Pin Channel Pin Channel Pin Channel
1 RESERVED 34 ch31 1 dut31
2 GND 33 GND 2 GND
3 RESERVED 32 ch29 3 dut29
4 GND 31 GND 4 GND
5 RESERVED 30 ch27 5 dut27
6 GND 29 GND 6 GND
7 RESERVED 28 ch25 7 dut25
8 RESERVED 27 NO CONNECT 8 NO CONNECT
9 RESERVED 26 ch23 9 dut23
10 GND 25 GND 10 GND
11 RESERVED 24 ch21 11 dut21
12 GND 23 GND 12 GND
13 DIO 19 22 ch19 13 dut19
14 GND 21 GND 14 GND
15 DIO 17 20 ch17 15 dut17
16 GND 19 GND 16 GND
17 DIO 15 18 ch15 17 dut15
18 GND 17 GND 18 GND
19 DIO 13 16 ch13 19 dut13
20 GND 15 GND 20 GND
21 DIO 11 14 ch11 21 dut11
22 GND 13 GND 22 GND
23 DIO 9 12 ch9 23 dut9
24 GND 11 GND 24 GND
25 DIO 7 10 ch7 25 dut7
26 PFI 1 9 ctrl1 26 dutctrl1
27 DIO 5 8 ch5 27 dut5
28 GND 7 GND 28 GND
29 DIO 3 6 ch3 29 dut3
30 PFI 3 5 ctrl3 30 ctrl3
31 DIO 1 4 ch1 31 dut1
32 GND 3 GND 32 GND
33 DDC CLK OUT 2 ctrl4 33 dutctrl4
34 GND 1 GND 34 GND
35 RESERVED 68 ch30 35 dut30
36 GND 67 GND 36 GND
37 RESERVED 66 ch28 37 dut28
38 GND 65 GND 38 GND
39 RESERVED 64 ch26 39 dut26
40 GND 63 GND 40 GND
41 RESERVED 62 ch24 41 dut24
42 GND 61 GND 42 GND
43 RESERVED 60 ch22 43 dut22
44 GND 59 GND 44 GND
45 RESERVED 58 ch20 45 dut20
46 GND 57 GND 46 GND
47 DIO 18 56 ch18 47 dut18
48 GND 55 GND 48 GND
49 DIO 16 54 ch16 49 dut16
50 GND 53 GND 50 GND
51 DIO 14 52 ch14 51 dut14
52 RESERVED 51 ctrl0 52 dutctrl0
53 DIO 12 50 ch12 53 dut12
54 GND 49 GND 54 GND
55 DIO 10 48 ch10 55 dut10
56 GND 47 GND 56 GND
57 DIO 8 46 ch8 57 dut8
58 GND 45 GND 58 GND
59 DIO 6 44 ch6 59 dut6
60 RESERVED 43 Res0 60 Res0
61 DIO 4 42 ch4 61 dut4
62 GND 41 GND 62 GND
63 DIO 2 40 ch2 63 dut2
64 PFI 2 39 ctrl2 64 ctrl2
65 DIO 0 38 ch0 65 dut0
66 GND 37 GND 66 GND
67 STROBE 36 ctrl5 67 dutctrl5
68 GND 35 GND 68 GND
Table 7. 6555/6556 and 6515 Pin Associations
6555/6556 Connector 6515 HSDIO (Left) Connector 6515 DUT (Right) Connector
Pin Channel Pin Channel Pin Channel
1 PFI 31 34 ch31 1 dut31
2 GND 33 GND 2 GND
3 PFI 29 32 ch29 3 dut29
4 GND 31 GND 4 GND
5 PFI 27 30 ch27 5 dut27
6 GND 29 GND 6 GND
7 PFI 25 28 ch25 7 dut25
8 GND 27 NO CONNECT 8 NO CONNECT
9 DIO 23 26 ch23 9 dut23
10 GND 25 GND 10 GND
11 DIO 21 24 ch21 11 dut21
12 GND 23 GND 12 GND
13 DIO 19 22 ch19 13 dut19
14 GND 21 GND 14 GND
15 DIO 17 20 ch17 15 dut17
16 GND 19 GND 16 GND
17 DIO 15 18 ch15 17 dut15
18 GND 17 GND 18 GND
19 DIO 13 16 ch13 19 dut13
20 GND 15 GND 20 GND
21 DIO 11 14 ch11 21 dut11
22 GND 13 GND 22 GND
23 DIO 9 12 ch9 23 dut9
24 GND 11 GND 24 GND
25 DIO 7 10 ch7 25 dut7
26 PFI 1 9 ctrl1 26 dutctrl1
27 DIO 5 8 ch5 27 dut5
28 X 7 GND 28 GND
29 DIO 3 6 ch3 29 dut3
30 PFI 3 5 ctrl3 30 ctrl3
31 DIO 1 4 ch1 31 dut1
32 GND 3 GND 32 GND
33 PFI 4/DDC CLK OUT 2 ctrl4 33 dutctrl4
34 GND 1 GND 34 GND
35 PFI 30 68 ch30 35 dut30
36 GND 67 GND 36 GND
37 PFI 28 66 ch28 37 dut28
38 GND 65 GND 38 GND
39 PFI 26 64 ch26 39 dut26
40 GND 63 GND 40 GND
41 PFI 24 62 ch24 41 dut24
42 GND 61 GND 42 GND
43 DIO 22 60 ch22 43 dut22
44 GND 59 GND 44 GND
45 DIO 20 58 ch20 45 dut20
46 GND 57 GND 46 GND
47 DIO 18 56 ch18 47 dut18
48 GND 55 GND 48 GND
49 DIO 16 54 ch16 49 dut16
50 GND 53 GND 50 GND
51 DIO 14 52 ch14 51 dut14
52 GND 51 ctrl0 52 dutctrl0
53 DIO 12 50 ch12 53 dut12
54 GND 49 GND 54 GND
55 DIO 10 48 ch10 55 dut10
56 GND 47 GND 56 GND
57 DIO 8 46 ch8 57 dut8
58 GND 45 GND 58 GND
59 DIO 6 44 ch6 59 dut6
60 RESERVED 43 Res0 60 Res0
61 DIO 4 42 ch4 61 dut4
62 GND 41 GND 62 GND
63 DIO 2 40 ch2 63 dut2
64 PFI 2 39 ctrl2 64 ctrl2
65 DIO 0 38 ch0 65 dut0
66 GND 37 GND 66 GND
67 PFI 5/STROBE 36 ctrl5 67 dutctrl5
68 GND 35 GND 68 GND
Table 8. 6581 and 6515 Pin Associations
6581 Connector 6515 HSDIO (Left) Connector 6515 DUT (Right) Connector
Pin Channel Pin Channel Pin Channel
1 RESERVED 34 ch31 1 dut31
2 GND 33 GND 2 GND
3 RESERVED 32 ch29 3 dut29
4 GND 31 GND 4 GND
5 RESERVED 30 ch27 5 dut27
6 GND 29 GND 6 GND
7 RESERVED 28 ch25 7 dut25
8 GND 27 NO CONNECT 8 NO CONNECT
9 P2.7 26 ch23 9 dut23
10 GND 25 GND 10 GND
11 P2.5 24 ch21 11 dut21
12 GND 23 GND 12 GND
13 P2.3 22 ch19 13 dut19
14 GND 21 GND 14 GND
15 P2.1 20 ch17 15 dut17
16 GND 19 GND 16 GND
17 P1.7 18 ch15 17 dut15
18 GND 17 GND 18 GND
19 P1.5 16 ch13 19 dut13
20 GND 15 GND 20 GND
21 P1.3 14 ch11 21 dut11
22 GND 13 GND 22 GND
23 P1.1 12 ch9 23 dut9
24 GND 11 GND 24 GND
25 P0.7 10 ch7 25 dut7
26 PFI 1 9 ctrl1 26 dutctrl1
27 P0.5 8 ch5 27 dut5
28 GND 7 GND 28 GND
29 P0.3 6 ch3 29 dut3
30 GND 5 ctrl3 30 ctrl3
31 P0.1 4 ch1 31 dut1
32 GND 3 GND 32 GND
33 CLOCK OUT 2 ctrl4 33 dutctrl4
34 GND 1 GND 34 GND
35 RESERVED 68 ch30 35 dut30
36 GND 67 GND 36 GND
37 RESERVED 66 ch28 37 dut28
38 GND 65 GND 38 GND
39 RESERVED 64 ch26 39 dut26
40 GND 63 GND 40 GND
41 RESERVED 62 ch24 41 dut24
42 GND 61 GND 42 GND
43 P2.6 60 ch22 43 dut22
44 GND 59 GND 44 GND
45 P2.4 58 ch20 45 dut20
46 GND 57 GND 46 GND
47 P2.2 56 ch18 47 dut18
48 GND 55 GND 48 GND
49 P2.0 54 ch16 49 dut16
50 GND 53 GND 50 GND
51 P1.6 52 ch14 51 dut14
52 GND 51 ctrl0 52 dutctrl0
53 P1.4 50 ch12 53 dut12
54 GND 49 GND 54 GND
55 P1.2 48 ch10 55 dut10
56 GND 47 GND 56 GND
57 P1.0 46 ch8 57 dut8
58 GND 45 GND 58 GND
59 P0.6 44 ch6 59 dut6
60 NO CONNECT 43 Res0 60 Res0
61 P0.4 42 ch4 61 dut4
62 GND 41 GND 62 GND
63 P0.2 40 ch2 63 dut2
64 PFI 2 39 ctrl2 64 ctrl2
65 P0.0 38 ch0 65 dut0
66 GND 37 GND 66 GND
67 GLOBAL CLOCK 0 36 ctrl5 67 dutctrl5
68 GND 35 GND 68 GND

PXIe-2515 Topology

Module software name: 2515/Independent (NISWITCH_TOPOLOGY_2515_INDEPENDENT)

This module enables connectivity by routing high-speed digital I/O (DIO) signals between a device under test (DUT) and a supported NI high-speed DIO device or parametric measurement devices.

This module uses reed relays. A number of factors can affect the life expectancy of reed relays.

For certain applications, you may need to increase the default settling time.

Note Switching inductive loads (for example, motors and solenoids) can produce high-voltage transients in excess of the module's rated voltage. Without additional protection, these transients can interfere with module operation and impact relay life.

Independent Topology


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Note ctrl0, ctrl2, and ctrl3 do not route through relays, but rather pass through from the left connector to the right connector. These channels cannot be connected to the analog bus channels, busa and busb.

Making a Connection

With the independent topology, you can let NI-SWITCH determine the path between two specified channels by setting the intermediate channels as reserved for routing and using the niSwitch Connect Channels VI or the niSwitch_Connect function, or you can control individual relays using the niSwitch Relay Control VI or the niSwitch_RelayControl function.

Intended Use and Signal Connections

The two analog buses of the module are intended to facilitate connectivity in performing DC parametric measurements. The analog buses of the module are not intended for high-bandwidth analog measurements (for example, rise time and skew).

You can connect the module to one supported NI high-speed DIO device and up to two other instruments. Refer to Analog Channel Expansion if your system requires the connection of more than two other instruments. The module is intended for use with any supported single-ended NI high-speed DIO device (for example, the NI 654x or the NI 655x), and it is not intended for use with a low-voltage differential signaling (LVDS) NI high-speed DIO device (for example, the NI 656x). Refer to the following figure and table for an example of the intended use of the module in a system.

Figure 1. Intended Use Diagram

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Note Slot placement of the modules within the chassis varies depending on the slot compatibility of your system.
Note NI recommends placing your supported NI high-speed DIO device in the chassis slot immediately to the left of the module. Use caution when inserting or removing a device immediately to the left of the module when the SHC68-C68-D5 cable is connected to the module because the cable connector may overlap slightly into the space of that slot.

Refer to the following table to select accessories that connect the module to your system.

Table 9. Signal Connections
Connection Indicated in Intended Use Diagram Cable Connection Recommended Cables/Accessories
A Module left VHDCI connector to supported NI high-speed DIO device NI SHC68-C68-D5[1] 0.5m Shielded Single-Ended Cable for High-Speed Digital Signal Insertion Switch
B and C Module BNC connectors to parametric measurement devices There is not a designated cable to connect the module BNC connectors to parametric measurement devices. Select a cable that fits the connectivity needs of your system.[2]
D Module right VHDCI connector to DUT You have the following options:
  • CB-2162 connector block and NI SHC68-C68-D4 Shielded Single-Ended Cable for High-Speed Digital Devices
  • SMB-2163 breakout box and NI SHC68-C68-D4 Shielded Single-Ended Cable for High-Speed Digital Devices
  • SHC68-H1X38 Shielded Single-Ended Flying-Lead Cable

Analog Channel Expansion

You can expand the number of analog channels beyond two with additional 2515 modules. Each additional module provides two additional analog channels. The number of digital lines does not change when you add analog channels.

Complete the following steps to expand the number of analog channels.

  1. Connect the first 2515 to the PXI-654x or 655x HSDIO module as described in Intended Use and Signal Connections.
  2. For each additional 2515 module, connect the "IO" side of an additional SCH68-C68-D5 cable to the "HSDIO" connector of an additional module.
    Note You must use the SCH68-C68-D5 cable. The pinouts are different from other SCH68 cables.
  3. Connect the other end of the SCH68-C68-D5 cable to the "DUT" connector of the previous module.
Figure 2. Analog Channel Expansion

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Note HSDIO signal quality is incrementally reduced by each additional 2515 module.

1 Use only the SHC68-C68-D5 cable to connect the supported NI high-speed DIO device to the module. The cable translates the pinout of the supported NI high-speed DIO device to the HSDIO connector on the module so that the pinout of the DUT connector on the module matches that of the supported NI high-speed DIO device.

2 The outer shields of both analog bus channels (B and C in the diagram) are connected to chassis ground. Therefore, the negative lead of any analog bus channel must be at chassis ground.