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83550130 Revision A
2. Interface setup information
For normal operation, only the GPIB primary address should be adjusted using switches 1
through 5 if required. The other switches, 6 through 8 remain in the OFF position.
2.1.
GPIB primary address (PA)
The GPIB primary address (PA) enables identification of all units connected to an IEEE-488
bus system, and each unit connected to the bus must be assigned a unique PA.
The Host PC usually has PA=0 and the connected units usually have addresses from 4
upwards. Normally PHV power supplies are factory configured with the PA set to 8.
The user can change the factory set PA via a DIP switch located on the IEEE-488 interface
converter on the rear panel of the unit (see the figure on page 3). It is not necessary to
open the power supply.
After changing a configuration switch, the power supply should be turned off for 5 seconds
and turned on again.
To change the GPIB PA, the user should only change switches 1 through 5. The unit is
factory set with switch 4 in the ON position and switches 1, 2, 3, and 5 are in the OFF
position (PA=8).
The switch settings follow the binary system:
Switch 1 has value 1
Switch 2 has value 2
Switch 3 has value 4
Switch 4 has value 8
Switch 5 has value 16
Example: To set the GPIB PA to 9, Switches 1 and 4 are ON, switches 2, 3, and 5 are
OFF. To set the GPIB PA to 20, Switches 3 and 5 are ON, switches 1, 2, and 4 are OFF.
2.2.
Other DIP switch settings
DIP switches 6, 7, and 8 are special functions and are factory set to the OFF position and
the settings should not be changed. Contact the factory for further information.
