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Chapter 5: Panel Indicators and Connectors--Rear Panel
The external power supply is rated for operation from 100 to 240 V AC, at frequencies from 47 to 63 Hz. It
should therefore be useable worldwide.
Caution: Power input voltages less than 40 V or greater than 52 V can damage the
Interface 1000's power supply.
Chassis Ground
The rear panel Chassis Ground banana jack is intended for one use only. When the Interface 1000 is used with
cells isolated from earth ground, connecting the chassis ground to earth ground may lower the noise measured
in the system. Note that the chassis of the Interface 1000 is connected to floating ground. Safety information
concerning this is in Chapter 1.
A banana plug is the only way you can connect to the Chassis Ground jack. Use a wire to connect the banana
plug to earth ground.
A black banana-plug-to-banana-plug lead is provided with your Interface 1000. You may find it useful when
making this earth-ground connection.
Chassis Ground Jack
USB Port
The USB port on the rear panel of the Interface 1000 is a Type B connector as defined in Revision 1.1 and 2.0
of the USB Specification. Use a standard, shielded, Type A/B cable to connect this port to a computer's USB
port or a USB hub (preferably an externally powered hub). The two ends of a Type A/B cable are different. The
more-rectangular end plugs into the computer and the more-square end plugs into the Interface 1000.
A suitable USB cable was included with your Interface 1000 shipment. If this cable is lost, you can replace it
with a cable from your local computer retailer.
The Interface 1000 is a High Speed USB 2.0 peripheral, capable of data-transfer at 480 Mbits/second. If it is
plugged into a computer port incapable of High Speed operation it will downgrade to USB 1.1 full-speed
operation (12 Mbits/second), causing slower data-transfer. The Interface 1000 USB port is compatible with
Revision 1.1 and 2.0 of the USB specification. It supports the Windows Plug-n-Play mechanism, including
dynamic connect/reconnect.
The front panel USB LED should be green whenever a valid computer to Interface 1000 connection is made
and both the computer and Interface 1000 are fully powered.
User I/O Connector
The User I/O connector contains digital signals used to connect external devices to the Interface 1000. All of its
signals are referenced to earth ground so their connection does not compromise the Interface 1000 ground
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