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Keithley 705 IEEE Compatible Scanner
The Keithley 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
l-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 Keithley
705, along with four additional Keithley 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
l/O port, switch from International to American date format, control
interval stop/start and select I-, 2- or 4 pole measurement modes.
The Keithley 705 Scanner adheres to
standard IEEE-488 interface bus protocol. This enables the Keithley 705 to
be incorporated into any measurement system that uses programmed control
through the IEEE-488 bus.
Features:
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IEEE-488 bus operation.
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Selectable scan rate from 10ms to
999.999sec.
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Selectable scan modes that allow the
operator to scan the first channel to the last channel once,
continuously or manually.
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Thirteen internal programs that are
available through the front panel.
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Model 705 mainframe can accommodate two
scanner plug-in cards.
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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
a low current relay card
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Time and date are kept with a battery
backed up clock.
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Digital I/O port with eight lines as
inputs and eight lines as outputs.
Specifications:
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CAPACITY: Two plug-in cards per
mainframe.
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EXPANSION CAPACITY: Daisy chain
allows up to 4 SLAVE units with 1 MASTER unit.
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SWITCHING RATE: 100
channels/second (10ms), programmable to 1 channel/l6 minutes
(999.999s).
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RELAY DRIVE: 350mA minimum.
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INTERNAL CLOCK: Displays
hours/minutes/seconds or date/month; less than 1 minute/month error
(typical).
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BATTERY BACKUP: Rechargeable
3.6V nickel-cadmium. 1 month retention of data (typical) with unit
turned off.
IEEE-488 BUS IMPLEMENTATION
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Multiline Commands: DCL,
LLO, SDC, GET, GTL, UNT, UNL, SPE, SPD.
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Uniline Commands: IFC,
REN, EOI, SRQ, ATN.
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Interface Functions: SHl,
AHl, T6, TEO, L4, LEO, SRI, RLI, PPO, DCl, DTI, CO, El.
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Programmable Parameters: Display
Mode, Output Format, EOI, SRQ, First, Last, Open, Close, Display
Channel, Alternate Output, Pole Mode, Date Format, Save/Restore, Reset,
l/O Port, Time, Date, Settling Time, Interval Time, Alarm Time, Program
Mode, Trigger Mode, Terminator, Self Test.
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Digital I/O Port: A
separate I/O port consisting of eight input and eight output lines as
well as common (IEEE-488) and +SVDC. Outputs will drive one TTL load.
Inputs represent one TTL load. Mating connector supplied.
GENERAL
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STORAGE ENVIRONMENT: -25O to 65°C.
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CONNECTORS: Four BNC; External
Trigger, Alarm Out/Serial-In, Channel Ready, Serial Out (TTL
compatible).
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POWER: 105-125V
or 210-250V (internal switch selected), 50Hz to400Hz.25 V*A maximum.
90-IIOV and 180.220V version available.
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DIMENSIONS, WEIGHT: 127mm
high x 216mm wide x 359mm deep (5" x 8%" x 14%"). Net weight 3kg
(6% lbs.).
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DISPLAY: Six
0.5" LED digits with decimal point, function and IEEE status
annunciators.
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OPERATING ENVIRONMENT: 0° to 50°C, 0% to 80% relative humidity up to 35oc.
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