Operation manual for the DESCO 19270 human grounding combo tester, covering installation, use, calibration and maintenance.
The DESCO 19270 Human Grounding Combo Tester is designed to verify the grounding resistance of wrist straps and anti‑static shoes according to ANSI/ESD S20.20 standards. The manual provides detailed instructions for installing the test unit, connecting the power adapter, grounding cable and foot plates, and configuring threshold values.
It also explains operation procedures, indicator meanings, relay dry‑contact functions, routine maintenance, calibration using the optional calibrator or a resistance box, and warranty information. Technical specifications such as test range, voltage, accuracy, and environmental limits are listed for reference. This manual is written in Chinese.
| Power adapter input / output | 100~240VAC input, 12VDC/0.5A output |
|---|---|
| Test range | 100 kΩ ~ 1 GΩ |
| Test voltage | 30 VDC (open‑circuit) |
| Test accuracy | ±10 % (general), ±20 % at 1 GΩ setting |
| Relay maximum current | 1 A @ 30 VDC |
| Operating temperature | 5 °C ~ 30 °C (21 °C ~ 30 °C when 1 GΩ) |
| Operating humidity | Up to 80 % non‑condensing, <50 % when 1 GΩ |
| Test unit dimensions / weight | 288 mm × 197 mm × 37 mm, 0.5 kg |
| Footplate dimensions / weight | 337 mm × 387 mm × 29 mm, 2.5 kg |