Keithley 213 User manual

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Model 213 Quad Voltage Source
Quick Reference Guide
A GREATER MEASURE OF CONFIDENCE
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INTRODUCTION
This quick reference guide contains descriptions of the
features and operation of the Model 213. Also included is
a programming example using a PC controller.
Olggo. Keithley Instruments, Inc.
All Rights Reserved
Instruments Division
Cleveland, Ohio, U. S. A.
Document Number: 213-903-01 Rev. A
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TABLE OF CONTENTS
SAFETY WARNINGS ....................... 5
FRONT PANEL FAMlLtARtZATlON ........... 7
REAR PANEL FAMlLlARlZATtON ............. 9
DIP SWtTCH ......................... 9
ANALOG OUTPUT PORTS .............. 9
DlGtTAL INPUT/OUTPUT PORTS ........ 10
BASIC OPERATION ....................... 13
DAC PORTTRIGGERING ............... 13
INTERNAL SUFFER ................... 14
CONTROL MODES .................... 16
IEEE-488 PROGRAMMING .................. 19
DEVICE-DEPENDENTCOMMANDS ...... 19
SRQ MASK AND SERIAL POLL BYTE ..... 31
STATUS WORDS ..................... 32
KEYBOARD CONTROLLER PROGRAM ....... 38
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SAFETY WARNINGS
The following safety warnings should be obsewed before
using Model 213 Quad Voltage Source. Refer to main
manual for detailed safety information and complete op-
eration instructions.
The Model 213 Quad Voltage Source is intended for use
by qualified personnel who recognize shock hazards and
are familiar with the safety precautions required to avoid
possible injury. Read over the manual carefully before
using the instrument.
Before operating the instrument, make sure the line cord
is connected to a properly grounded power receptacle.
Exercise extreme caution when a shock hazard is pre-
sent. Lethal voltages may be present on connsctorjacks.
The American National Standards fnstitute (ANSI) states
that a shock hazard exists when voltage levels greater
than 30V FtMSor42.4Vpeakare present. Agoodsafety
practice Is to expect that hazardous v&age Is pre-
sent In any unknown clrcuii before measuring.
Inspect the connecting cables, test leads, and jumpers
for possible wear, cracks, or breaks before each use.
For maximum safety, do not touch the Quad Voltage
Source connections, test cables or connections to any
other instruments white power is applied to the circuit un-
der test. Turn off att power and discharge any capacitors
before connecting or disconnecting cables or jumpers.
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Do not touch any object which could provide a current
path to the commonside ofthecircuit undertestorpower
line (earth) ground.
Do not exceed the maximum signal levels of the instru-
ment, as shown on the rear panel and as defined in the
specifications and operation section of the instruction
manual.
tnstrumentation and accessories should not be con-
nected to humans.
Maintenance should only be performed by qualified SBW
ice personnel. Before performing any maintenance, dis-
connect the line cord and all test cables from the instru-
ment.
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FRONT PANEL
FAMILIARIZATION
Six LEDs on the front panel of the Model 213 Quad Volt-
age Source disolav the status of the interface fsee
Figure 1).
Ffgure 1. Front Panel Indicators
TALK-On when the unit is in the talker state, off whsn
the unit is in the idle or listener state.
LfSTEN - On when the unit is in the listener state, off
when the unit is in the idle or talker State.
SRQ - On when the unit has generated a service Is-
quest. oft when no SW is pending. (See Service Re-
quest Mask command for more information.)
ERROR-On when an error has occurred, off when no
error condition exists. (See Error Query command for
more information.)
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TEST - Used in conjunction with the Test command to
verify that communication. ..__ ___,
n haa haen established with the
unit. The TEST light will flash wher I the unit is calibrating
in the auto-calibration mode. It will then remain tit when
finished.
POWER-On when power is applied to the unit and the
power switch on the back panel is in the on position (de-
pressed). Off if power is not present.
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REAR PANEL
FAMILIARIZATION
DIP SWITCH
The Model 213 hasone S-position switch @WI) accessi-
ble from the rear panel. This switch determines the unit’s
IEEE address and its operating mode (normal or auto-
calibration). The switch is read only when the unit is pow-
ered on and should be set prior to applying power.
Figure 2 illustrates the factory default setting for SWI,
Figure 2. SW1 Factory Default Setttngs
ANALOG OUTPUT PORTS
The Model 213 can be thought of as four isolated digital
to analog converters occupying one IEEE-488 bus ad-
dress. Each port has a low (L), high (H), and ground
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(chassis ground) line. Cha*sis ground may be connected
lo the shield of shielded cable if this type of cable is used
lo carry the analog signals.
CAUTION
The maximum common-mode input
voltage (the voltage between output LO
and chassis ground) Is 500V peak. Ex-
ceeding this value may damage the In-
terface.
The pinouts for all four analog ports are labeled on the
real panel of the unit and are shown in Figure 3. Each
analog output is capable of sourcing and sinking a maxi-
mum current 0, ,OrnA.
PORT 1 PORT? PORT 3 PORT4
HLG HLG HLG HLG
. . . . . . . . . . . .
Figure 3. Analog Output Connector Pinout
DIGITAL INPUT/OUTPUT PORTS
The Model 213 has eight digital input lines and eight digi-
tal output lines.
Figure 4 illustrates the digital I/O edge connector as
viewed from the rear of the instrument.
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