Gamry Instruments Interface 1000 Operator's Manual page 49

Chapter 6: Instrument Circuitry--Interface 1000 Schematic/Block Diagrams
Notes for Figure 6-4:
Note the lack of a ground connection between the USB bus and the Interface 1000 circuitry.

The USB Processor firmware is loaded into its RAM on power-up.

The Power PC firmware is also transferred from ROM into RAM on power-up. Time-critical sections of

the Power PC code are kept in the processor's fast cache memory.
The term UART refers to a Universal Asynchronous Receiver Transmitter. It converts parallel data to a

serial bit-stream. The UARTs send data at 6 Mbits/second.
The Interface 1000 has local non-volatile data storage. This is used to save calibration data and board-

revision information. Interface 1000 calibration data is stored in the instrument, not in a data file.
When an Interface 1000 is moved from one computer to another, its calibration remains valid.
The FPGA code can be updated in the field over the USB connection.

The Windows device manager can be used for field update of all three programmable parts: the USB

Processor, the Power PC, and the FPGA. Binary code for the updates can be obtained from the Gamry
Website. If you need assistance with field updates, contact Gamry technical support at
techsupport@gamry.com
Figure 6-4
Microprocessors in the Interface 1000
or contact your local Gamry representative.
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