Agilent Technologies E1326B Manual do Utilizador descarregar pdf (Página 50)

380 OUTPUT 70903;"INIT"

390 !

Retrieve the readings from multimeter memory and enter them into the

400 !controller. Clear the switchbox to exit the continuous scanning mode.

410 OUTPUT 70903;"FETC?"

420 ENTER 70903;Rdgs(*)

430 CLEAR 70914

440 END

Comments

• The multimeter at secondary address 03 (logical address 24) is

connected to the switchbox at secondary address 14 (logical

address 112) with an analog bus cable and a digital bus cable.

• The analog bus carries the input signals to the multimeter. The

digital bus is used to carry a "multimeter complete" signal to the

switchbox to trigger the next channel closing.

• Because of the fast rate at which the FET channels close, the

multimeter is triggered once (

INIT) and then samples continuously

(

SAMP:COUN 500). Thus, the multimeter ignores the multiplexer

"channel closed" signal on the digital bus.

• Using this configuration, the multimeter is able to continuously scan the

switchbox and store readings in its memory at a 76 µs (13 kHz) rate.

Chapter 3 Using the HP E1326B/E1411B Multimeter 51

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Agilent Technologies E1326B Manual do Utilizador Página 50