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FET Multiplexer Registers

There are five READ and six WRITE registers on the FET strain gage

multiplexer.

The READ Registers The following READ registers are located on the FET strain gage

multiplexer.

• ID Register (base + 00

)

• Device Type Register (base + 02

)

• Status Register (base + 04

)

• Scan Control Register (base + 06

)

• Scan Channel Delay Register (base + 08

)

ID Register The FET multiplexer’s ID Register indicates the classification, addressing

mode, and manufacturer of the device.

base + 00

1514131211109876543210

Read Device Class Address

Mode

Manufacturer ID

Device Class Device Classification. Bits 15 and 14 classify a device as one of the

following:

0 0 memory device

0 1 extended device

1 0 message-based device

1 1 register-based device

The HP E1357A/E1358A FET Strain Gage Multiplexers are register-based

devices.

Address Space Addressing Mode. Bits 13 and 12 indicate the addressing mode used by

the device:

0 0 A16/A24 address mode

0 1 A16/A32 address mode

1 0 RESERVED

1 1 A16 address mode

The HP E1357A/E1358A FET Strain Gage Multiplexers use the A16

address mode.

126 Strain Gage Register-Based Programming Appendix D

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Agilent Technologies E1356A Especificaciones Pagina 127