Usb Interface; Gpib Interface - Chroma 62000L Series User Manual

3.13.1.1 USB Interface

When the USB interface is used, make sure both ends of your USB cord at your power supply
and computer are well connected.

When the USB interface is connected, your computer will detect this device and require
that a VISA driver be installed. If you had the driver installed previously, there will be no
issue with the remote communication. If not, please go to the National Instruments
website to download the NI-VISA Run-Time Engine, version 4.2 or greater. After installing
the driver, the power supply will be found via the USB interface.

3.13.1.2 GPIB Interface

Each device on the GPIB interface has its own unique address. A repeated address will cause
problems for GPIB communication. The power suppler provides 31 addresses (0 – 30) for you
to choose from. The current address will show up on the display when you go into the Menu
via the front panel. The factory default is 10.
Note You can select the GPIB address only from the front panel.

The GPIB address is saved in non-volatile memory, and isn't changed when the power
supply is turned off or after resetting a remote interface.

The default of the GPIB address is 10. Avoid using the address for any instrument on the
interface bus.
Front Panel Operation:
To check /set the GPIB address, please follow the procedures below. Please note that this
setting is available for the 62000L series unit whose GPIB card is installed.
1. Press the button once. Rotate the knob to the GPIB.
Menu
2. Press the button once to confirm. A blinking ADDR will show on the display.
Menu
3. Press the button once to confirm. ADDR 10 (default) will show on the display.
Menu
4. Rotate the knob to the desired address (if the address 10 doesn't meet your needs).
5. Press the button once to apply the address you set. To quit the configuration, press
Menu
any other key to exit. When a new GPIB address is chosen, it will be saved in non-volatile
memory, and will not be changed when the power supply is turned off or after resetting a
remote interface.
GPIB Cable Limitations:
Using the GPIB cable to connect the power supply and computer, you have the following
limitations.
 The total number of connections, including the computer, can not exceed 15.
 The total length of all the GPIB cables used can not be more than 2 meters times the
number of connections, up to a maximum of 20 meters.
 The individual GPIB cable lengths can not exceed 4 meters. Otherwise, the data
transmission might be intermittent.
 GPIB connectors can not be stacked over three connector blocks. Make sure that all
connectors are completely in position and firmly secured by the screws.
Power Supply Operation
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