User Manual

Reference information
Table 19: Three phase, four wire sum equations (cont.)
Communication ports
The PA3000 is tted with RS
-232, Ethernet, and USB as standard. GPIB is
available as an option. A USB host port is located on the front panel; other
communication ports are located on the rear panel.
Front panel USB host port
Single port on the front
panel
USB 2.0 compatible
250 mA, +5 V supply
Table 20: USB connector pin descriptions
Pin Description
1+5V
2
Data (D -)
3
Data (D+)
4
Ground
USB Flash Drive Requirements:
The USB ash drive must be formatted with FAT12, FAT16 or FAT32 le
systems.
Sector size must be 512 bytes. Cluster size up to 32 k B.
Only Bulk Only Mass Storage (BOMS) devices which support the SCSI or
AT command sets are supported. For more information on BOMS devices
refer to Universal Serial Bus Mass Sto rage Class Bulk Only Transport Rev.
1.0, publishe
d by the USB Implementers Forum.
146 PA3000 Power Analyzer User Manual