Cable Assemblies for Test & Measurement
A measurement lead is part of the instrument. If it adds noise, leaks current or changes between builds, the measurement is wrong — and the instrument will get blamed for it.
HKWIRE is a custom cable assembly manufacturer and OEM/ODM supplier in Longgang, Shenzhen. Small batches and high mix are normal for us, and the pinout convention you specify is the one that gets built and recorded.
What this application demands
These are the constraints that change the design. Everything else is a normal cable.
- Signal integrity
- Capacitance, leakage and shielding determine whether a low-level measurement survives the cable. Insulation resistance of 100 MΩ at 500 VDC and, where needed, above 1 GΩ.
- Shielding integrity
- Coverage, drain termination and connector bonding, verified end to end — not assumed from the cable construction.
- Precise pinout
- Pinout is verified 100% against your wiring schedule. On high-pin-count and multi-channel builds this is the defect that actually occurs.
- Small batch, high mix
- Ten variants of fifty pieces is a different production problem from five thousand of one part. We run both.
- Repeatability between builds
- Specifications and tooling retained under your part reference, so a reorder two years later matches the original.
Typical builds
- Precision measurement lead sets
- Shielded multi-channel harnesses
- Breakout boxes and adapter assemblies
- Fixture and probe cabling for production test
- Low-level signal and high-impedance connections
Test and measurement assemblies we build
- SMA to BNC RF Coax Patch Cable, 50 Ohm RG-58
- Formable Probe Cable for Borescope and Inspection Leads
- Ultrasound Probe Cable Assembly, Multi-Coax Build
- 12G-SDI Coax Cable Assembly, BNC to BNC
- CoaXPress Machine Vision Cable Assembly for CXP-12 Camera Links
- Micro-D Shielded Jumper with Twisted Pair and Coax Mix for Avionics
- Earphone Memory Wire Cable with Formable Ear Hook
- Formable Wire Harness with Position-Holding Core
- UL1331 FEP Teflon Hook-Up Wire, 600 V / 150 °C
- 3G-SDI BNC Video Cable, 75 Ohm, Dual Copper Braid
Electrical limits we report
| Test | What it catches | Typical limit |
|---|---|---|
| Continuity and pinout | Miswiring, open and crossed circuits | 100% of units, <1–5 Ω |
| Insulation resistance | Leakage paths, contamination, damaged insulation | ≥100 MΩ at 500 VDC, up to ≥1 GΩ |
| Dielectric withstand (hipot) | Clearance and insulation defects | 1000–1500 VAC for 1 s, cut-off <1–5 mA |
| Contact resistance | Poor crimps and degraded contacts | ≤10–20 mΩ |
Tell us the measurement, not just the connector. Signal type, expected magnitude and the bandwidth that matters are what decide the cable construction.
What we ask before quoting
Answer these with the drawing and the quotation will be meaningful on the first pass.
- Signal type, magnitude and bandwidth
- Shielding and grounding scheme
- Pinout convention and labeling requirements
- Quantity per build and expected reorder pattern
- Any calibration or documentation requirement
Measurement cables built and verified in one building
The risk with low-volume builds is drift between orders. We keep the drawing, the wiring table and the test scope on file against your part reference, so a reorder two years later is built to the same definition rather than reverse-engineered from the last one.
Continuity and pinout are tested on 100% of units; insulation resistance, hipot and contact resistance run to the agreed scope, with the limit stated on the record. Assembly follows IPC/WHMA-A-620 Class 3 workmanship criteria under an ISO 9001 certified quality management system. See testing and validation for how limits and report formats are agreed. Audits, in person or by live video, are welcome.
What to send with your RFQ
- Signal type, magnitude and bandwidth that matter for the measurement
- Shielding and grounding scheme
- Pinout convention and labeling requirements
- Quantity per build and expected reorder pattern
Send the specification and the mating connectors
We will confirm what the cable has to survive, flag anything that will cost you money without adding function, and quote against your drawing.
Test & measurement cable FAQ
Do you accept small batches?
Yes. Prototype and fixture builds run from 1 to 50 pcs, and high-mix, low-volume programs are a normal part of what we run.
Can you supply per-unit test data?
Yes. Per-unit logs, a summary report or a certificate of conformance — the format is agreed before production so the data matches your incoming inspection.
Will a reorder match the original build?
Yes. Your drawing, wiring table and test scope are held against the part reference, so a repeat order is built to the same definition.
Can you follow our own pinout and labeling convention?
Yes. Send the convention and it gets built into the wiring table and the test file rather than translated into ours.
Can we audit the factory?
Yes. On-site audits or a live video walk-through of the assembly lines and test benches can be arranged in advance.
Do you build test cables under our brand?
Yes. We supply as an OEM and ODM manufacturer and supplier, building to your wiring table and shipping from our factory with your labeling.
Can you build to a defined pinout and test limit?
Yes. Pinout convention, labeling and test limits are recorded against your part reference, and every unit is continuity tested by the manufacturer to the limit we agree before production.