Front Panel and Connector Pinout

NI Digital Waveform Generator/Analyzer

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Front Panel and Connector Pinout

The NI 656x front panel, shown below, has three SMB jack connectors and one 73-pin Digital Data & Control (DDC) 12x Infiniband connector. The SMB jack connectors are described in the SMB Jack Connector Names and Descriptions table. The DDC connector signals are described in the DDC Connector Names and Descriptions table.

NI 656x Front Panel and Connector Pinout

Note  If you design a custom cabling solution with connector (779157-01) and cable (192744-01), the NI 656x pinout is reversed at the end connector. For example, the signal shown on pin 1 shown in the previous figure would map to pin 73 at the end connector.

SMB Jack Connector Names and Descriptions

Connector Signal Name Signal Type Signal Description
CLK IN Reference/Clock Input Control External reference clock used for the PLL or for the external Sample clock used for pattern generation and/or acquisition.
PFI 0 Programmable Function Interface (PFI) 0 Control Input terminal to the NI 656x for external triggers or the output terminal from the NI 656x for events.
CLK OUT Reference/Clock Output Control Terminal for the exported PLL Reference clock or the exported Sample clock.

DDC Connector Names and Descriptions
Pins Signal Name Signal Type Signal Description
65 DDC CLK OUT LVDS Control Positive terminal for the LVDS exported Sample clock.
66 DDC CLK OUT LVDS* Control Complementary terminal for the LVDS exported Sample clock.
71 DDC CLK OUT LVPECL Control Positive terminal for the LVPECL exported Sample clock.
72 DDC CLK OUT LVPECL* Control Complementary terminal for the LVPECL exported Sample clock.
62 STROBE Control Positive external Sample clock source that can be used for dynamic acquisition.
63 STROBE* Control Complementary external Sample clock source that can be used for dynamic acquisition.
14, 17, 20, 23, 26, 29, 32, 35, 38, 41, 44, 47, 50, 53, 56, 59 DIO <0..15> Data Positive bidirectional digital I/O data channels 0 through 15.
15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60 DIO <0..15>* Data Complementary bidirectional digital I/O data channels 0 through 15.
2, 5, 8 PFI<1..3> Control Positive input terminals to the NI 656x for external triggers or output terminals from the NI 656x for events.
3, 6, 9 PFI<1..3>* Control Complementary input terminals to the NI 656x for external triggers or output terminals for the NI 656x for events.
Note  Pin 9 is grounded when the PFI channel is configured for the single-ended terminal configuration.
1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31, 34, 37, 40, 43, 46, 49, 52, 55, 58 GND Ground Ground reference for signals.
11, 12, 68, 69 RESERVED N/A These terminals are reserved for future use. Do not connect to these pins.
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