The Model 705 is a low cost IEEE compatible scanner. The
basic mainframe can accommodate two plug-in scanner cards.
Each card can have different pole configurations. In the
1-pole configuration the card has 20 channels. The 4-pole
configuration allows 10 channels with two cards (for
four-wire ohms). Using the "daisy chain" method the Model
705, along with four additional Model 705's, can provide up
to 100 2-pole channels. The time and the date are kept
internally with a battery backed up clock allowing time
dependent procedures to be performed.
The controls on the front panel allow opening a selected
channel, closing the channel, scanning between a selectable
first and last channel, selectable scan rate and mode. There
are 13 internal programs that are accessible from the front
panel. The programs can select primary address, dwell time,
store a relay set up, recall the stored relay set up,
control the digital I/O port, switch from International to
American date format, control interval stop/start and select
1-, 2- or 4- pole measurement modes.
The Model 705 Scanner adheres to standard IEEE-488 interface
bus protocol. This enables the Model 705 to be incorporated
into any measurement system that uses programmed control
through the IEEE-488 bus.
The Model 705 Scanner includes the following features:
•IEEE-488 bus operation.
•Selectable scan rate from 10ms to 999.999sec.
•Selectable scan modes that allow the operator to scan the
first channel to the last channel once, continuously or
•Thirteen internal programs that are available through the
•Model 705 mainframe can accommodate two scanner plug-in cards.
•Several different scanner relay cards are available as
options. They include: a general purpose relay card; a
thermocouple relay card; a low voltage relay card; and a low
current relay card.
•Time and date are kept with a battery backed up clock.
• Digital I/O port with eight lines as inputs and eight
lines as outputs.