Using E5810 Web Access
Finding and Querying Instruments
Button | Description |
|
|
*IDN? | ID String. Returns the ID string for the selected |
| instrument. |
|
|
Device Clear | Device Clear. Sometimes communication with an instrument may be |
| impeded. This can occur for a wide variety of reasons. Sending a Device |
| Clear to the instrument usually solves this problem and restores proper |
| communication with the instrument. If you encounter an error while doing a |
| Formatted I/O operation, you can send a Device Clear to ensure proper |
| instrument communication is restored. |
|
|
Read STB | Read Status Byte. Returns the decimal and hexadecimal value of the |
| |
| support Formatted I/O also have the ability to read the Status Byte. This |
| returns information on the status of the instrument, such as error status |
| and/or busy status. See your instrument manuals for status byte codes. |
|
|
SYST:ERR? | System Error. Returns a SCPI system error for a SCPI compliant |
| instrument. A “0 No errors” return is sent to show no system errors. |
|
|
Clear History | Clear the Display. Clears the (History) display of all previous queries. |
|
|
Clear ALL | Clear All Pending Operations. Clears all pending operations on instruments |
Pending | connected to the E5810. This operation expires all existing timeouts on all |
Operations | devices connected to the E5810. Taking this action may affect other users |
| currently using the E5810. A password dialog box will appear that asks you |
| if you really want to do this action. |
|
|
Timeout | Change instrument Timeout. A timeout value is used to limit the amount of |
| time for an I/O operation to complete. The I/O Timeout value, as set on the |
| Configuring your E5810 LAN/GPIB Gateway page, may not be long enough |
| for some instrument activities to complete. Setting a longer timeout here |
| tells the E5810 to wait a longer time for the instrument to finish. |
| As an alternative, doing a separate Send and Receive may also work. Also, |
| if the configuration value is too long, you may force a shorter timeout here |
| for faster troubleshooting of instrument tests, etc. To set a different timeout, |
| enter a Timeout value in the Timeout text box. This value is used for all |
| commands issued to an instrument from this page. The valid timeout range |
| is 1 to 60 seconds. |
|
|
Chapter 3 | 99 |
