Tektronix DMM4050 6 half bit high-precision digital multimeter

2. Error correction

External correction: When the measurement accuracy exceeds the limit, the correction value can be entered (CONFIG → CAL → CORECT);

Example: Measure a 10V reference source, read 10.0001V, enter the correction value "-0.0001V", and the subsequent readings will be automatically compensated.

Temperature compensation: The instrument has a built-in temperature sensor that automatically compensates for resistance/capacitance measurements (± 0.001%/℃).

3. Troubleshooting

Possible causes and solutions for the fault phenomenon

No display/power adapter failure, fuse blown, replace with 12V/3A adapter; Check the "FUSE" terminal (2A/250V fuse)

The reading drift is too large and self calibration is not performed due to environmental temperature fluctuations; Ensure stable ambient temperature (± 1 ℃/hour)

GPIB unresponsive address mismatch, cable loose confirmation GPIB address (: SYST: GPIB: ADRD?); Replace GPIB cable

Error Code -221 Parameter Out of Range Check Command Parameters (e.g. MEAS: VOLT: DC?)? 2000 over 1000V range)

Safety and Environmental Compliance

1. Safety level and operating standards

Overvoltage category: CAT III 1000V (distribution system), CAT IV 600V (low-voltage power grid);

Terminal rating:

V Ω terminal: maximum 1000V DC/AC;

Terminal A: Maximum 10A DC/AC (continuous), 20A (30 second pulse);

Safe operation: It is prohibited to plug or unplug probes with power on; Wear insulated gloves when measuring>600V; Stop using when the terminal is damaged.

2. Environmental parameters

Explanation of Environmental Category Specification Requirements

If the working temperature exceeds the range of+18 ℃ -+28 ℃, the self calibration cycle needs to be extended (e.g. once every 30 days for+10 ℃ -+18 ℃)

Storage temperature -40 ℃ -+70 ℃. Storage in humid/corrosive environments is prohibited

When the humidity is between 20% and 80% (without condensation), dehumidification is required before use when the humidity is above 80%

Altitude ≤ 2000m, high altitude (>2000m) requires derating for use (e.g. voltage range x 0.8)