Section 11
:
Calibration
Series 3700 System Switch/Multimeter Reference Manual
11-4
Document Number: 3700S-901-01 Rev. A / August 2007
Remote comprehensive calibration procedure
NOTE
U.U.T. stands for unit under test.
To perform calibration, use the following procedure:
Step 1. Prepare the Series 3700 for calibration:
1. Connect the Series 3700 to the IEEE-488 bus of the computer using a shielded IEEE-488
cable, such as the Keithley Instruments Model 7007, over the Ethernet, or directly to a
computer through the Ethernet port using a cross-over cable.
2. Turn on the Series 3700, and allow it to warm up for at least two hours before performing
calibration.
3. Make sure the primary address of the Series 3700 is the same as the address specified in
the program that you will be using to send commands (the GPIB default address is 16; the
Ethernet default port number is 23).
4. Turn TSP prompt and errors off and unlock the calibration function by sending the following
commands:
SEND localnode.prompts=0
SEND localnode.showerrors=0
SEND dmm.reset()
SEND errorqueue.clear()
SEND dmm.connect = dmm.CONNECT_ALL
SEND dmm.calibration.unlock("KI003706")
NOTE
Check for errors after each Cal command is sent by using the following command:
SEND print(errorqueue.count)
NOTE
Send each calibration command with print ("done") appended to allow the program to
know when operation is complete.
NOTE
When remotely changing the unlock code, send the dmm.calibration.unlock()
command twice, first with the present code, then with the new code.
DC volts calibration
1. Install the 4-wire short on the analog backplane connector inputs of the Series 3700.