6482-901-01 Rev. A / August 2012 Return to Section Topics 1-9
Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual Section 1: Getting Started
Rev A01 A02
Where: A01 is the main board ROM revision.
A02 is the display board ROM revision.
Also displayed is the line frequency (50 Hz or 60 Hz). If the wrong frequency is displayed, it can be
set manually as described below. The communication interface status is briefly displayed. If the
IEEE-488 bus is the presently selected interface, the identification message includes the primary
address. For example, if the primary address is 25 (factory default), the SCPI Addr=25 message
is displayed. If the RS-232 interface is selected, the RS-232 mode message is displayed.
After the power-up sequence, the instrument goes to its normal display state with the output off
(the blue ON/OFF OUTPUT indicator only lights when the output is on).
System identification
To obtain the serial number and revision information, press the MENU key, and then select
GENERAL > SERIAL # or send the *IDN? query from a remote interface.
Line frequency setting
If the line frequency setting (50 Hz or 60 Hz) does not match the power line frequency in your area,
noisy measurement readings will result, and accuracy may be affected. You can manually set the
line frequency from the front panel or through a remote interface as described below. Make sure to
also check the instruments power line voltage setting (see Line voltage selection).
CAUTION Operating the instrument on an incorrect line voltage may cause damage,
possibly voiding the warranty.
Front-panel line frequency
To set the line frequency from the front panel:
1. Press the MENU key to display MAIN MENU.
2. Press the EDIT or keys to select AD-CTRL, and then press the ENTER key to display the
A/D CONTROLS menu.
3. Select LINE-FREQUENCY, and then press the ENTER key to display the LINE FREQUENCY
menu.
4. Place the cursor on 50 Hz or 60 Hz, and then press the ENTER key.
5. Press the EXIT key as needed to return to normal display.
Remote command line frequency
Use the following command to set the line frequency:
:SYSTem:LFRequency <Freq>
See Section 16 for additional information on using this command.
Programming example
50 Hz operation:
:SYST:LFR 50
Fuse replacement
A rear-panel fuse protects the power line input of the Model 6482. If the line fuse needs to be
replaced, replace it as described in Section 18.
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