Agilent Technologies U2781A manual Fan Speed Monitoring

Fan Speed Monitoring

The U2781A USB modular instrument chassis is also integrated with a fan speed control circuit. It is used to monitor the fan status and speed. The control circuit communicates with backplane USB device via I2C interface. Refer to Figure 3- 5.

To query the fan status, send the SCPI command below:

SYSTem:FSTATus? {12}

To query the fan speed in rpm, send the SCPI command below:

SYSTem:FSPeed? {12}