NI EPM high-performance DAQ cable

SH1006868:100 pin to two 68 pin accessories can be connected simultaneously.

SCB-100: High density shielded junction box.

50 needle device

SH6850:68 pin to 50 pin conversion cable.

CB-50LP: Low cost 50 pin junction box.

37 needle device

SH37F-37M: 37 pin D-Sub shielded cable.

CB-37F-HVD: High voltage isolation junction box (150 V CAT II).

Signal conditioning platform

SCC: Portable modular signal conditioning with up to 4 modules.

SCXI: High performance modular signal conditioning, expandable to thousands of channels.

CRIO-9151: R series expansion chassis, capable of connecting C series I/O modules.

Selection suggestions in practical applications

1. High precision analog measurement (such as thermocouples, strain gauges, pressure sensors)

Preferred SHC68-68-EPM+SCB-68 or SCC-68.

Ensure that the cable length is as short as possible (1 meter or 2 meters) to reduce noise pickup.

Use the grounding jumper inside SCB-68 to correctly configure the signal reference (differential/RSE/NRSE).

2. Mixed signal system (including both analog and high-speed digital I/O)

The analog part uses EPM cables, while the digital part can use SHC68-68 or RC68-68 to save costs.

Keep analog and digital cables routed separately to avoid parallel routing.

3. Portable or battery powered system

Use DAQCard device+SHC68-68-EPM+SCC-68 to form a compact low-power measurement front-end.

4. Industrial site and cabinet installation

Choose TBX-68 or CB-68LPR (right angle connector) and install it with DIN rail.

Pay attention to the bending radius of the cable to avoid damaging the shielding layer.

Maintenance and troubleshooting tips

Although the SHC68-68-EPM cable is sturdy and durable, improper use may still lead to a decrease in signal quality. It is recommended to follow the following principles:

Regular inspection of connectors: VHDCI connectors have high-density pins and should be aligned during insertion and removal to avoid bending or breaking the pins.

Maintain shielding integrity: Damage to the cable sheath can reduce shielding effectiveness, and repair should be done with heat shrink tubing or electrical tape.

Avoid excessive bending: Especially at the root of the connector, excessive bending can cause internal wire breakage.

Use ferrite magnetic rings: In environments with strong radio frequency interference, ferrite magnetic rings can be clamped at both ends of the cable (some NI cables have built-in ferrite magnetic rings).