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Section 3: Remote operation Series 2200 Programmable DC Power Supplies Reference Manual
3-2 2200S-901-01 Rev. A/November 2011
Using the GPIB
Connector for IEEE-488 (GPIB) operation. Use a shielded cable, such as the Keithley Instruments
Model 7007-1 or Model 7007-2.
Connect a GPIB cable from the Series 2200 instrument to your PC.
GPIB requirements
Before setting up the power supply for remote communication using the electronic (physical) GPIB
interface, you should familiarize yourself with the following recommendations:
A unique device address should be assigned to each device on the bus. No two devices should
share the same device address.
No more than 15 devices can be connected to any one bus.
Only one device should be connected for every 6 feet (2 meters) of cable used.
No more than 65 feet (20 meters) of cable should be used to connect devices to a bus.
At least two-thirds of the devices on the network should be on while using the network.
Connect the devices on the network in a star or linear configuration. Do not use loop or parallel
configurations.
To change GPIB address settings
Your power supply must have a unique device address to function properly. The default setting for the
GPIB configuration is GPIB Address 22. If there is more than one GPIB instrument on the bus, you
will need to change the default setting on the power supply.
To change the GPIB address settings, do the following:
1. On the instrument front-panel, press Shift and Menu (1).
2. Press the down arrow key or navigation wheel until you see System on the display, then press
Enter.
3. Press the down arrow key or navigation wheel until you see Communication on the display,
then press Enter.
4. Press the down arrow key or navigation wheel until you see GPIB on the display, then press
Enter. The display shows the GPIB address. For example, if the GPIB address is 22, the display
will show Address=22.
5. Use the arrow keys, numeric keypad, or navigation wheel to change the GPIB address, then
press Enter.
The power supply is now set up for bidirectional communication with your controller.
Command timing
The average time it takes to both send and receive every command is approximately 20 ms. In the
case of more complex commands, more time may be required to complete transmission.