Semight-SUPPORT-FAQ-Semight Instruments

Q&A

Common Problem

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？Q

SMU - is dual channel internal common ground?

A

Non common ground, common ground requires external wiring
？Q

SMU - device interface problem

A

DB9 (9-pin, RS232) is only used for synchronization. USB and network cable are used for connection
？Q

SMU - electric shock damages the device under test

A

Operate the LCD screen system - > misc - > outputrelay and set it to normal close mode
Outputrelay: off open: when the channel output status is off, the internal relay of the instrument is in the off state; normal close: when the channel output status is off, the internal relay is in the closed state
？Q

SMU - when the dual channel synchronization function is turned on, if the main channel is configured as a current source, connect the measured part (LR series element) to the probe of the main channel, and measure the magnetic coupling current of the measured part on the slave channel, if the: output1 command is not sent to the slave channel, only the: init command is sent to the slave channel, can the sensing current sampling data be read from the slave channel smoothly?

A

Before init, ensure that the source output status is on
？Q

SMU - the command output1 precedes the command: will the issue of init affect the accuracy of measurement data? (difference in order of issue)

A

Before init, ensure that the output is on, otherwise an error will be reported. Output 1 is on, which has nothing to do with the accuracy of measurement data
？Q

SMU - how to set the master channel and slave channel when dual channel synchronous DC pulse linear scanning

A

Turn on the synchronization function of two synchronization, set the master channel as master and the slave channel as slave
？Q

SMU - is there a quantitative relationship between pulse width and pulse delay time?

A

There is no relationship between quantity and duty ratio. See the index book for details
？Q

SMU - trig: what are the trigger points set by count? If it is not set, what impact will it have on the test?

A

Trig: count is used in the scanning mode. The value of: trig: count is the same as the number of scanning points. This value is not required for fix continuous output mode
？Q

SMU - what is the concept of source delay time (MS)?

A

Source establishment time: if the setting value is too small (specifically related to amplitude), the source cannot be completely established, and the output value will be too small

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