Line frequency configuration
The factory configures the 2600B to detect the power line frequency automatically at each power-up.
This detected line frequency (either 50 Hz or 60 Hz) is used for aperture (NPLC) calculations.
In noisy environments, you can manually configure the instrument to match the actual line frequency.
To configure the line frequency from the front panel:
1. Press the MENU key, then turn the navigation wheel to select LINE-FREQ, and then press the
ENTER key.
2. Turn the navigation wheel to select the appropriate frequency and then press the ENTER key. To
configure the instrument to automatically detect line frequency at each power-up, select AUTO.
3. Press the EXIT (LOCAL) key to return to the main display.
To configure the line frequency from a remote interface:
Set the localnode.linefreq or the localnode.autolinefreq attribute. To set the line
frequency to 60 Hz, send:
localnode.linefreq = 60
To configure the instrument to automatically detect line frequency at each power-up:
localnode.autolinefreq = true
System information
You can retrieve serial number, firmware revision, calibration dates, and memory usage
from the instrument.
To view the system information from the front panel:
1. Press the MENU key.
2. Select SYSTEM-INFO.
3. Select one of the following:
▪ FIRMWARE
▪ SERIAL#
▪ CAL
▪ MEMORY-USAGE
To retrieve system information from a remote interface:
To retrieve the firmware revision and serial number, send the *IDN? query.
For more information on system information, see the Series 2600B Reference Manual. In particular:
• To determine memory usage, see the meminfo() function.
• To determine when calibration was last run, see smuX.cal.date.
• To determine when calibration is due, see smuX.cal.due.
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