GTI6031H vs GTI6331H: which tester does your line actually need?
The two questions I hear most from buyers are "which one is better?" and "can you do better on the price of the better one?" Both skip the real question. These two machines are not on a quality ladder — they solve different problems. Picking from a spec sheet instead of from your own line data is how floors end up with idle testers, or with a queue in front of one.
The number that decides it
Two inputs: how many seconds one unit occupies a station, and how many units you ship per day. From those:
stations needed = Q ÷ per-station capacity
If one station keeps up with your line, a parallel system is money spent on capacity you will not use. If the arithmetic says you need three or more stations, parallel testing usually wins on labour cost before it wins on floor space. Run the numbers first; the model choice follows.
Choose the GTI6031H when
- One station keeps up. R&D benches, incoming inspection, pilot runs — a single tester that out-paces the flow of units is all you need, and it is the cheapest way to get full coverage.
- You test high-power chargers. The 6031H measures to 60V / 10A / 240W, so GaN chargers and 240W laptops bricks get full-load and protocol validation in one bench.
- You need the newest protocol stack. Full PD3.2 coverage plus 20+ legacy protocols — QC2.0/3.0, PPS, PE, and the major brand protocols — out of the box.
- You want plug-and-test on screen. A 7-inch colour screen, CC/D± auto-detection, and external trigger. No PC required for a shift of testing.
Choose the GTI6331H when
- Units arrive faster than one station can test. The base host runs multiple DUTs in parallel and scales to 16 channels with expansion — throughput without multiplying operators.
- Your line mixes products. Different DUTs run in parallel on the same system, each with its own sequence and its own pass/fail indicator.
- Records have to reach your MES or ERP. PC software logs per-DUT results and exports them; barcode and QR scanning tie each record to a physical unit.
- You do full pre-shipment inspection. E-commerce sellers and EMS lines use it to check every unit before dispatch without adding headcount.
The 6031H tests one DUT at a time — no amount of spec buys that back. The 6331H is built around parallel throughput; its electrical range is set per configuration, so I will not quote one number here — ask for the datasheet of the exact configuration before you compare ranges across the two.
The two side by side
| GTI6031H | GTI6331H | |
|---|---|---|
| Layout | Single station, 7-inch screen | Base host + expansion, up to 16 DUTs |
| Range | 60V / 10A / 240W | Per configuration — see datasheet |
| Protocols | 20+, full PD3.2 | Per configuration |
| Accuracy | ±0.1% typical voltage / current | Per-channel pass/fail indicator on each DUT |
| Data | On-screen operation, external trigger, ripple test | PC software, data logging, report export, MES push, barcode/QR |
| Best fit | Bench work, high-power charger validation, lines one station keeps up with | Production throughput, mixed-DUT parallel testing, full-inspection volume |
A worked example
3,000 units a day, 45 seconds of test per unit, 7 effective hours in a shift. One station clears 560 units. That is 3,000 ÷ 560 = 5.4, so six stations. Six single benches and six operators — or one 6331H host plus expansion, with one operator watching per-channel results on screen. That comparison is the conversation worth having, not which box looks more impressive.
What I tell buyers
Start from your takt, not the catalogue. If your numbers say one station keeps up, the 6031H gives you the widest range and the newest PD3.2 coverage in a single box. If they say you need three or more stations, the 6331H starts with one host and grows by adding channels — single-unit MOQ on both lines, so you can start small and expand instead of guessing your volume two years out. And if you send me your Q and T, I will run the arithmetic with you before you spend anything.