Semight-SUPPORT-After-sale Service-Semight Instruments

Service

Committed to providing you with better support!

The specific commitments are as follows:

1. Warranty period: free repair or replacement of parts damaged due to quality issues; non-quality issues or human-caused damage will be charged at cost price.

2. Beyond warranty period: continue to provide free remote technical support, software upgrades, discounted supply of accessories, and can arrange on-site service by technicians charged at cost price.

3. Rapid Response: resident technical support engineers are available in multiple locations domestically and internationally, providing efficient technical support.

4. Regular follow-up: conduct regular follow-ups and inspections of the products to ensure long-term stable operation of the equipment.

Q&A

Product category

Retrieval

？Q The dark current of the same material measured by two different source meters is greatly different

A

Modify the measuring range. Since the dark current value is small, it is necessary to select the current gear and select 10uA for measurement
？Q Why is there no curve in the IV curve in the scanning mode as shown in the figure below?

A

The scanning mode cannot use the automatic range, and the voltage range and current range need to be set to the fixed mode; If the customer needs to scan from - 1V to 1V, 1V can be selected for the fixed range
？Q Can the refresh rate of the Source meter unit be increased?

A

No, the firmware is limited internally and the refresh rate cannot be improved
？Q How does the source meter measure resistance?

A

Main interface advanced option - resistance option - select resistance mode enable;
In addition, current source mode should be selected for resistance measurement, and matching range should be selected, as shown in the following figure: when measuring 1 ohm resistance, the range defaults to 1a when testing current
？Q What should be paid attention to when measuring small resistance values? If the inductance is measured, the resistance of the measured inductance is 0.02 ohm.

A

When measuring small resistance, it is necessary to select the four wire mode, because the connection resistance may be greater than 0.02 ohm for two-wire mode measurement. Four wire measurement method: A. sense and rorce are connected in parallel, black end is connected in parallel, B. select four wire mode, advanced misc - set 4wire
？Q What is the concept of clamping current? If not set, what will be the impact on the test?

A

When in voltage source mode, clamping current can be set
When the voltage source outputs, the current value will not exceed the clamping current. When the current value reaches the clamping current, the voltage will not rise
If not set, there will be a default value
？Q What is the concept of protection voltage (OVP)?

A

The output of voltage source shall not exceed the set value of OVP. The default value of OVP is 24V and the maximum value can be set to 72V
？Q What is the concept of clamp voltage? If not set, what will be the impact on the test?

A

When in current source mode, clamping voltage can be set
When the current source outputs, the voltage value will not exceed the clamping voltage. When the voltage value reaches the clamping voltage, the current will not rise
If not set, there will be a default value
？Q What is the concept of NPLC? If not set, what will be the impact on the test?

A

NPLC is the cycle multiple of the sampling power supply, 1nplc = 20ms
If it is not set, there will be a default value. If the setting value is abnormal, the reading will be incorrect

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