Keithley 2001 User Manual

Model 2001 Multimeter

Quick Reference Guide

Model 2001 Multimeter

Quick Reference Guide

1992, Keithley Instruments, Inc.

All rights reserved.

Cleveland, Ohio 44139

U.S.A.

Document Number: 2001-903-01 Rev. B

Table of Contents
Safety Precautions .......................................................	1
Introduction ................................................................	5
Operation Summary....................................................	6
Multiple Displays .......................................................	11
Menu Structures ........................................................	13
Default Conditions ....................................................	32
Error and Status Messages .........................................	48
IEEE-488.2 Common Commands and Queries...........	56
SCPI Command Subsystems ......................................	58

Safety Precautions

The following safety precautions should be observed before using this product and any associated instrumentation. Although some instruments and accessories would normally be used with non-hazardous voltages, there are situations where hazardous conditions may be present.

This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read the operating information carefully before using the product.

The types of product users are:

Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the equipment is operated within its specifications and operating limits, and for ensuring that operators are adequately trained.

Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use of the instrument. They must be protected from electric shock and contact with hazardous live circuits.

Maintenance personnel perform routine procedures on the product to keep it operating, for example, setting the line voltage or replacing consumable materials. Maintenance procedures are described in the manual. The procedures explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.

Service personnel are trained to work on live circuits, and perform safe installations and repairs of products. Only properly trained service personnel may perform installation and service procedures.

Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or test fixtures. The American National Standards Institute (ANSI)

1

states that a shock hazard exists when voltage levels greater than 30V RMS, 42.4V peak, or 60VDC are present. A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring.

Users of this product must be protected from electric shock at all times. The responsible body must ensure that users are prevented access and/or insulated from every connection point. In some cases, connections must be exposed to potential human contact. Product users in these circumstances must be trained to protect themselves from the risk of electric shock. If the circuit is capable of operating at or above 1000 volts, no conductive part of the circuit may be exposed.

As described in the International Electrotechnical Commission (IEC) Standard IEC 664, digital multimeter measuring circuits (e.g., Keithley Models 175A, 199, 2000, 2001, 2002, and 2010) are Installation Category II. All other instruments’ signal terminals are Installation Category I and must not be connected to mains.

Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance limited sources. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective devices to limit fault current and voltage to the card.

Before operating an instrument, make sure the line cord is connected to a properly grounded power receptacle. Inspect the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.

For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the circuit under test. ALWAYS remove power from the entire test system and discharge any capacitors before: connecting or disconnecting cables or jumpers, installing or removing switching cards, or making internal changes, such as installing or removing jumpers.

2

Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth) ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstanding the voltage being measured.

The instrument and accessories must be used in accordance with its specifications and operating instructions or the safety of the equipment may be impaired.

Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and operating information, and as shown on the instrument or test fixture panels, or switching card.

When fuses are used in a product, replace with same type and rating for continued protection against fire hazard.

Chassis connections must only be used as shield connections for measuring circuits, NOT as safety earth ground connections.

If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation requires the use of a lid interlock.

If a screw is present, connect it to safety earth ground using the wire recommended in the user documentation.

The ! symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.

The symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined effect of normal and common mode voltages. Use standard safety precautions to avoid personal contact with these voltages.

The WARNING heading in a manual explains dangers that might result in personal injury or death. Always read the associated information very carefully before performing the indicated procedure.

3

The CAUTION heading in a manual explains hazards that could damage the instrument. Such damage may invalidate the warranty.

Instrumentation and accessories shall not be connected to humans.

Before performing any maintenance, disconnect the line cord and all test cables.

To maintain protection from electric shock and fire, replacement components in mains circuits, including the power transformer, test leads, and input jacks, must be purchased from Keithley Instruments. Standard fuses, with applicable national safety approvals, may be used if the rating and type are the same. Other components that are not safety related may be purchased from other suppliers as long as they are equivalent to the original component. (Note that selected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product.) If you are unsure about the applicability of a replacement component, call a Keithley Instruments office for information.

To clean an instrument, use a damp cloth or mild, water based cleaner. Clean the exterior of the instrument only. Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument. Products that consist of a circuit board with no case or chassis (e.g., data acquisition board for installation into a computer) should never require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected, the board should be returned to the factory for proper cleaning/servicing.

2/99

4

Introduction

This quick reference guide includes summary information on front panel and IEEE-488 operation for the Model 2001 Multimeter. For detailed information, consult the Model 2001 Operator’s Manual, the Model 2001 Calibration Manual, and the Model 2001-SCAN Scanner Card Instruction Manual.

All Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc.

Other brand and product names are trademarks or registered trademarks of their respective holders.

5

Operation Summary

Default Configuration

The Model 2001 can save from one to ten user setups in memory, depending on the installed memory option. You can select one of the user setups as the power-on default, or have the instrument power up to either of the two factory defaults (optimized for “BENCH” or “GPIB” operation). Reset the instrument to “BENCH” defaults from the front panel by performing the following steps:

1. Press the MENU key to display the main menu:

MAIN MENU

SAVESETUP GPIB CALIBRATION

TEST LIMITS STATUS-MSG GENERAL

2.If the SAVESETUP option is not blinking, press the

key until it is blinking and then press ENTER to

view the setup menu:

SETUP MENU

SAVE RESTORE POWERON RESET

3.Select the RESET option and press ENTER to view the reset menu:

RESET ORIGINAL DFLTS

BENCH GPIB

4.Select the BENCH option and press ENTER. The following message is displayed:

RESETTING INSTRUMENT

ENTER to confirm; EXIT to abort

5.Press ENTER to confirm. The display will show DC voltage readings with autorange enabled.

6

Assuming the Model 2001 is set to primary address 16, the instrument can be reset and the reading displayed on the computer CRT from the IEEE-488 bus with the following code fragment:

100 OUTPUT 716;“:syst:pres”

110 OUTPUT 716;“:fetc?”

120 ENTER 716;A$

130 PRINT A$

Instrument Connections

Each measurement function has an appropriate connection scheme. Connections for all functions can be found in Section 3 of the Model 2001 Operator’s Manual. The following steps summarize making DC voltage measurements with the Model 2001:

1.Select the front input jacks with the INPUTS button (outer position for front jacks, inner position for rear).

2.Using the set of supplied test leads, connect the Model 2001 to a DC voltage source (e.g., a battery) as shown in Figure 1.

3.Use the RANGE keys to select autoranging or a manual range. Pressing the AUTO range key toggles autoranging. You can select a different range with the RANGE and RANGE keys. The following code statement enables autoranging on the DCV function:

100 OUTPUT 716;“:volt:dc:rang:auto on”

7

				Model 2001
									SENSE	INPUT
									Ω 4 WIRE
									HI
								350V		1100V	DC Voltage
								PEAK		PEAK	Source
							2001 MULTIMETER
									LO	500V
									INPUTS	PEAK
PREV	DCV	ACV	DCI	ACI	Ω2	Ω4	FREQ	TEMP
DISPLAY								F	R
								RANGE
NEXT	REL	TRIG	STORE RECALL		FILTER	MATH		AUTO
POWER								RANGE		AMPS
									CAL
	INFO	LOCAL	CHAN	SCAN	CONFIG MENU		EXIT	ENTER

Input Resistance = 10MΩ on 1000V and 200V ranges ;

> 10GΩ on 20V, 2V and 200mV ranges.

= 1MΩ on DCV peak spikes measurement.

Caution : Maximum Input = 1100V peak

Figure 1. Typical DC voltage connections

Changing the Configuration

Each measurement function and operation has the default settings that are listed in Table 18. For example, the default settings for DC voltage are as follows:

•Measurement speed (integration time) Normal, 1 power line cycle.

•Digital filter Advanced, 10 readings, 1% noise tolerance, moving average.

•Display resolution 6.5 digits.

If these settings are not sufficient for your application, they can be changed through configuration menus. For example, to configure the DC voltage function to store high speed measurements, follow these steps:

1. Press CONFIG key and then the DCV key to view

8

the DCV configuration menu:

CONFIGURE DCV

SPEED FILTER RESOLUTION

2.Select SPEED from the menu, then press ENTER. The multimeter displays the following menu:

DCV MEASUREMENT SPEED

NORMAL FAST MEDIUM HIACCURACY

SET-SPEED-EXACTLY SET-BY-RESLN

3.Using the cursor keys, select the FAST option, then press ENTER. Since the resolution is set to AUTO, where it defaults to a value appropriate for the speed, it will be set to 4.5d automatically.

4.Press EXIT to return to the normal display.

To store readings in the instrument’s data storage buffer, perform the following:

1.Press the STORE key. The following message is displayed:

STORE 00100 READINGS

Use , , , , ENTER, EXIT, or INFO

2.Use the cursor and RANGE keys to change the number of readings stored, or just press ENTER to start storing readings.

To recall the stored readings, perform the following:

1.Press RECALL to view the readings. The following message is displayed with the cursor on the least significant digit of the reading number:

9

+000.0000 mVDC

Rdg#+00000 @Time =+000.000000 sec

2.Use the RANGE keys to increment and decrement the reading number and scroll through the buffer.

3.The NEXT and PREV DISPLAY keys can be used while recalling readings to access additional buffer data, such as maximum and minimum readings.

The following code fragment configures the Model 2001 for high speed DC voltage readings, stores 100 readings, and sends the readings over the bus:

100 OUTPUT 716;“:syst:pres”

110 OUTPUT 716;“:volt:dc:nplc 0.01”

120 OUTPUT 716;“:trac:clear”

130 OUTPUT 716;“:trac:feed calc”

140 OUTPUT 716;“:trac:egr full”

150 OUTPUT 716;“:trac:poin 100”

160 OUTPUT 716;“:trac:feed:cont next”

170 OUTPUT 716;“:trac:data?”

180 ENTER 716;A$

190 PRINT A$

10

Multiple Displays

Each measurement function has its own set of “multiple displays” shown on the bottom line of the front panel display. To scroll through the multiple displays available for the present function, repeatedly press and release the NEXT DISPLAY key. The same action with the PREVious DISPLAY key does a reverse scroll through the displays. To return to the default reading display, just press and hold either key.

Table 1. Multiple displays by function

Function	Next display
All	Bar graph
	Zero-centered bar graph
	Maximum and minimum values
	Relative and actual values
	Calculated and actual values (see Note 1)
	Limits bar graph (see Note 1)
	Adjacent channel readings (see Note 2)
DC voltage	DC volts, AC ripple voltage and frequency
	Positive peak spikes and highest value
	Negative peak spikes and lowest value
	Positive and negative peak spikes
AC voltage	AC RMS voltage, frequency, and crest factor
	AC RMS, average, and peak voltages
DC current	(none specific to function)
AC current	AC RMS (or average) current and frequency
	AC RMS and average current
2-wire resistance	Source current
	Voltage drop across DUT
4-wire resistance	Source current
	Voltage drop across DUT
	Lead resistance
Frequency	Period calculation
	Trigger level
	11

Table 1. Multiple displays by function (cont.)

Function	Next display
Temperature	Celsius, Fahrenheit, and Kelvin units
	RTD resistance (or thermocouple voltage)
	Reference junction (thermocouples only)

Data storage buffer Maximum and minimum values Average and standard deviation

Notes:

1.Multiple displays for calculated values and limits bar graph are not available for the frequency function.

2.The multiple display for adjacent channel readings is not available for the DC and AC current functions.

12

Menu Structures

The desired menu is displayed by pressing the appropriate key or sequence:

•CONFIG and then DCV (or ACV, DCI, ACI, Ω2, Ω4, FREQ, TEMP) Shows the configuration menu for each measurement function.

•CONFIG and then NEXT DISPLAY (or PREV DIS-

PLAY, REL, TRIG, STORE, FILTER, MATH, CHAN, SCAN) Shows the configuration menu for the multiple displays and each measurement operation.

•MENU The main menu accesses items for which there are not dedicated keys.

Once in a menu structure, place the cursor ( and keys) on the desired selection and press ENTER. Use the cursor keys, RANGE and RANGE keys to enter parameters. Use the EXIT key to back out of a menu structure and disable a menu.

Table 2. CONFIGURE DCV menu structure

Menu item	Description
SPEED	Measurement speed (integration time)
	menu:
NORMAL	Select 1 PLC (power line cycle,
	16.67msec for 60Hz, 20msec for
	50Hz and 400Hz).
FAST	Select 0.01 PLC.
MEDIUM	Select 0.1 PLC.
HIACCURACY	Select 10 PLC.
SET-SPEED-EXACTLY	Set integration time in PLC
	(0.01-10).
SET-BY-RSLN	Default to setting appropriate for
	resolution.
ANALOG-FILTER	Enable (ON) or disable (OFF) analog
	filter.
	13

Table 2. CONFIGURE DCV menu structure (cont.)

Menu item	Description
FILTER	Digital filter menu:
AUTO	Default to filter appropriate for
	integration time.
AVERAGING	Program a simple average filter
	(1-100 readings).
ADVANCED	Program a simple average filter
	(1-100 readings) with a noise tol-
	erance window (0-100% of
	range).
AVERAGING-MODE	Select moving average or repeat-
	ing average mode.
RESOLUTION	Display resolution menu:
AUTO	Default to resolution appropriate
	for integration time.
3.5d, 4.5d, 5.5d, 6.5d,	Select a specific resolution.
7.5d

Table 3. CONFIGURE ACV menu structure

Menu item	Description
SPEED	Measurement speed (integration time)
	menu:
NORMAL	Select 1 PLC (power line cycle,
	16.67msec for 60Hz, 20msec for
	50Hz and 400Hz).
FAST	Select 0.01 PLC.
MEDIUM	Select 0.1 PLC.
HIACCURACY	Select 10 PLC.
SET-SPEED-EXACTLY	Set integration time in PLC (0.01-10).
SET-BY-RSLN	Default to setting appropriate for res-
	olution.
FILTER	Digital filter menu:
AUTO	Default to filter appropriate for inte-
	gration time.
AVERAGING	Program a simple average filter
	(1-100 readings).
ADVANCED	Program a simple average filter
	(1-100 readings) with a noise tol-
	erance window (0-100% of
	range).
AVERAGING-MODE	Select moving average or repeating
	average mode.

14

Table 3. CONFIGURE ACV menu structure (cont.)

Menu item	Description
RESOLUTION	Display resolution menu:
AUTO	Default to resolution appropriate for
	integration time.
3.5d, 4.5d, 5.5d, 6.5d,	Select a specific resolution.
7.5d
UNITS	Display units menu:
VOLTS	Select volts.
dB	Select dB and set voltage reference
	level.
dBm	Select dBm and set reference imped-
	ance.
COUPLING	Coupling menu:
AC	Select AC coupled measurements.
AC+DC	Select DC coupled measurements.
AC-TYPE	Type of ACV measurement menu:
RMS	Select true RMS ACV.
AVERAGE	Select average ACV.
PEAK	Select peak ACV.
LOW-FREQ-RMS	Select low frequency (typically
	<50Hz) true RMS ACV.
POSITIVE-PEAK	Select positive DCV peak spikes
	measurements.
NEGATIVE-PEAK	Select negative DCV peak spikes
	measurements.

15

Table 4. CONFIGURE DCI menu structure

Menu item	Description
SPEED	Measurement speed (integration time)
	menu:
NORMAL	Select 1 PLC (power line cycle,
	16.67msec for 60Hz, 20msec for
	50Hz and 400Hz).
FAST	Select 0.01 PLC.
MEDIUM	Select 0.1 PLC.
HIACCURACY	Select 10 PLC.
SET-SPEED-EXACTLY	Set integration time in PLC
	(0.01-10).
SET-BY-RSLN	Default to setting appropriate for
	resolution.
FILTER	Digital filter menu:
AUTO	Default to filter appropriate for inte-
	gration time.
AVERAGING	Program a simple average filter
	(1-100 readings).
ADVANCED	Program a simple average filter
	(1-100 readings) with a noise tol-
	erance window (0-100% of
	range).
AVERAGING-MODE	Select moving average or repeating
	average mode.
RESOLUTION	Display resolution menu:
AUTO	Default to resolution appropriate for
	integration time.
3.5d, 4.5d, 5.5d, 6.5d,	Select a specific resolution.
7.5d
MEASUREMENT-MODE	Measurement mode menu:
NORMAL	Select normal current measurement
	(use AMPS terminals).
IN-CIRCUIT	Select in-circuit current measure-
	ment (use INPUT and SENSE ter-
	minals).

16

Table 5. CONFIGURE ACI menu structure

Menu item	Description
SPEED	Measurement speed (integration time)
	menu:
NORMAL	Select 1 PLC (power line cycle,
	16.67msec for 60Hz, 20msec for
	50Hz and 400Hz).
FAST	Select 0.01 PLC.
MEDIUM	Select 0.1 PLC.
HIACCURACY	Select 10 PLC.
SET-SPEED-EXACTLY	Set integration time in PLC (0.01-10).
SET-BY-RSLN	Default to setting appropriate for res-
	olution.
FILTER	Digital filter menu:
AUTO	Default to filter appropriate for inte-
	gration time.
AVERAGING	Program a simple average filter
	(1-100 readings).
ADVANCED	Program a simple average filter
	(1-100 readings) with a noise toler-
	ance window (0-100% of range).
AVERAGING-MODE	Select moving average or repeating
	average mode.
RESOLUTION	Display resolution menu:
AUTO	Default to resolution appropriate for
	integration time.
3.5d, 4.5d, 5.5d, 6.5d,	Select a specific resolution.
7.5d
COUPLING	Coupling menu:
AC	Select AC coupled measurements.
AC+DC	Select DC coupled measurements.
AC-TYPE	Type of ACI measurement menu:
RMS	Select true RMS ACI.
AVERAGE	Select average ACI.

17

Table 6. CONFIGURE OHMS-2W menu structure

Menu item	Description
SPEED	Measurement speed (integration time)
	menu:
NORMAL	Select 1 PLC (power line cycle,
	16.67msec for 60Hz, 20msec for
	50Hz and 400Hz).
FAST	Select 0.01 PLC.
MEDIUM	Select 0.1 PLC.
HIACCURACY	Select 10 PLC.
SET-SPEED-EXACTLY	Set integration time in PLC
	(0.01-10).
SET-BY-RSLN	Default to setting appropriate for
	resolution.
FILTER	Digital filter menu:
AUTO	Default to filter appropriate for inte-
	gration time.
AVERAGING	Program a simple average filter
	(1-100 readings).
ADVANCED	Program a simple average filter
	(1-100 readings) with a noise tol-
	erance window (0-100% of
	range).
AVERAGING-MODE	Select moving average or repeating
	average mode.
RESOLUTION	Display resolution menu:
AUTO	Default to resolution appropriate for
	integration time.
3.5d, 4.5d, 5.5d, 6.5d,	Select a specific resolution.
7.5d
OFFSETCOMP	Enable/disable offset compensation
	(20Ω-20kΩ ranges).
MAXAUTORANGE	Set upper limit for autoranging of 2-
1GΩ, 200MΩ, 20MΩ,	wire resistance.
	Select a specific range.
2MΩ, 200kΩ, 20kΩ

18

Table 7. CONFIGURE OHMS-4W menu structure

Menu item	Description
SPEED	Measurement speed (integration time)
	menu:
NORMAL	Select 1 PLC (power line cycle,
	16.67msec for 60Hz, 20msec for
	50Hz and 400Hz).
FAST	Select 0.01 PLC.
MEDIUM	Select 0.1 PLC.
HIACCURACY	Select 10 PLC.
SET-SPEED-EXACTLY	Set integration time in PLC (0.01-10).
SET-BY-RSLN	Default to setting appropriate for res-
	olution.
FILTER	Digital filter menu:
AUTO	Default to filter appropriate for inte-
	gration time.
AVERAGING	Program a simple average filter
	(1-100 readings).
ADVANCED	Program a simple average filter
	(1-100 readings) with a noise tol-
	erance window (0-100% of
	range).
AVERAGING-MODE	Select moving average or repeating
	average mode.
RESOLUTION	Display resolution menu:
AUTO	Default to resolution appropriate for
	integration time.
3.5d, 4.5d, 5.5d, 6.5d,	Select a specific resolution.
7.5d
OFFSETCOMP	Enable/disable offset compensation
	(20Ω-20kΩ ranges).
MAXAUTORANGE	Set upper limit for autoranging of 4-
200kΩ, 20kΩ, 2kΩ	wire resistance.
	Select a specific range.

19

Table 8. CONFIGURE FREQUENCY menu structure

Menu item	Description
MAX-SIGNAL-LEVEL	Display maximum signal level
	menu:
1V, 10V, 100V, 1000V, TTL	Select maximum voltage level
	for voltage inputs.
1mA, 10mA, 100mA, 1A	Select maximum current level
	for current inputs.
RESOLUTION	Display resolution menu:
4-DIGITS, 5-DIGITS	Select a specific resolution.
INPUT-TERMINALS	Input terminals for frequency
	measurements menu:
VOLTAGE	Select INPUT HI and INPUT
	LO terminals.
CURRENT	Select AMPS and INPUT LO
	terminals.
COUPLING	Coupling menu:
AC	Select AC coupled measure-
	ments.
AC+DC	Select DC coupled measure-
	ments.

Note: The maximum signal level menu is coupled to the input terminals menu, i.e., voltage levels are shown if voltage is the selected input.

20

Table 9. CONFIG TEMPERATURE menu structure

Menu item	Description
SENSOR	Sensor type menu:
4-WIRE-RTD	4-wire RTD type menu:
PT385	Select a PT385 type.
PT3916	Select a PT3916 type.
USER-RTD	Select desired R-zero, alpha,
	beta, and delta.
RTD	2-wire RTD type menu:
PT385	Select a PT385 type.
PT3916	Select a PT3916 type.
USER-RTD	Select desired R-zero, alpha,
	beta, and delta.
SENSOR
THERMOCOUPLE	Thermocouple setup menu:
THERMOCOUPLE-TYPE	Select desired thermocouple
	type (J, K, T, E, R, S, B).
REF-JUNCTIONS	Configure reference junction
	menu (JN1 thru JN5):
CONFIGURE	Configure simulated or real
	junction.
ACQUIRE-REF-TEMP	Acquire reference tempera-
	ture.
UNITS	Temperature units menu:
DEG-C, DEG-F, K	Select desired temperature
	units.
SPEED	Measurement speed (integration
	time) menu:
NORMAL	Select 1 PLC (power line cycle,
	16.67msec for 60Hz, 20msec
	for 50Hz and 400Hz).
FAST	Select 0.01 PLC.
MEDIUM	Select 0.1 PLC.
HIACCURACY	Select 10 PLC.
SET-SPEED-EXACTLY	Set integration time in PLC
	(0.01-10).
SET-BY-RSLN	Default to setting appropriate
	for resolution.

21

Table 9. CONFIG TEMPERATURE menu structure (cont.)

Menu item	Description
FILTER	Digital filter menu:
AUTO	Default to filter appropriate for
	integration time.
AVERAGING	Select simple average filter
	(1-100 readings).
AVERAGING-MODE	Select moving average or
	repeating average mode.
RESLN	Display resolution menu:
AUTO	Default to resolution appropri-
	ate for sensor.
1°, 0.1°, 0.01°, 0.001°	Select a specific resolution.

22

Table 10. CONFIGURE TRIGGER menu structure

Menu item	Description
MEASURE	Measure layer menu:
SOURCE	Select measure source:
IMMEDIATE	Use to make measure-
EXTERNAL	ments immediately.
	Use external triggers to
	control measuring.
MANUAL	Use TRIG key to control
	measuring.
GPIB	Use bus triggers to control
	measuring.
TRIGLINK	Use Trigger Link triggers to
	control measuring. Enter
	Trigger Link mode and
	lines.
TIMER	Use a timer to control mea-
	suring and enter interval
	between triggers (0.001-
	999999.999sec).
HOLD	Use to hold up the mea-
	surement in the measure
	layer.
DELAY	Use to delay measurement in
	the measure layer (0.001-
	999999.999sec).
COUNT	Define number of measure-
	ments to make:
INFINITE	Repeat measuring indefi-
	nitely.
ENTER-CHAN-COUNT	Count = use defined value
	(1-99999).
CONTROL	Select trigger control mode:
SOURCE	Enable Source Bypass.
ACCEPTOR	Disable Source Bypass.

23

Table 10. CONFIGURE TRIGGER menu structure (cont.)

Menu item	Description
SCAN	Scan layer menu:
SOURCE	Select scan source:
IMMEDIATE	Use to pass operation
	immediately into the
EXTERNAL	measure layer.
	Use external triggers to
	control scanning.
MANUAL	Use TRIG key to control
	scanning.
GPIB	Use bus triggers to control
	scanning.
TRIGLINK	Use Trigger Link triggers to
	control scanning. Enter
	Trigger Link lines.
TIMER	Use a timer to control
	scanning and enter inter-
	val between scans
	(0.001-999999.999sec).
HOLD	Use to hold up the mea-
	surement in the scan
	layer.
DELAY	Use to delay scan in the scan
	layer (0.001-
	999999.999sec).
COUNT	Define number of scans to be
	performed:
INFINITE	Repeat scanning indefi-
	nitely.
ENTER-SCAN-COUNT	Count = user defined value
	(1-99999).
CONTROL	Select trigger control mode:
SOURCE	Enable Source Bypass.
ACCEPTOR	Disable Source Bypass.

24

Table 10. CONFIGURE TRIGGER menu structure (cont.)

Menu item	Description
ARM	Arm layer menu:
SOURCE	Select arm source:
IMMEDIATE	Use to arm meter immedi-
	ately and pass operation
	into the scan layer.
EXTERNAL	Use external triggers to arm
	meter.
MANUAL	Use TRIG key to arm
	meter.
GPIB	Use bus triggers to arm
	meter.
TRIGLINK	Use Trigger Link triggers to
	arm meter. Enter Trigger
	Link lines.
HOLD	Use to hold up the mea-
	surement in the arm
	layer.
COUNT	Define number of times to
	arm meter:
INFINITE	Continuously re-arm meter.
ENTER-ARM-COUNT	User defined count value
	(1-99999).
CONTROL	Select trigger control mode:
SOURCE	Enable Source Bypass.
ACCEPTOR	Disable Source Bypass.
HALT	Use to halt triggers. Press TRIG
	key to resume triggering.

25

Table 11. CONFIG DATA STORE menu structure

Menu item	Description
BURST-MODE	Acquire 4.5-digit readings at 2000
	readings/sec and store in buffer.
DATA-GROUP	Select data types to store in buffer.
FULL	Store reading, units, channel#, read-
	ing#, time-stamp, and status
	(overflow).
COMPACT	Store reading, units, reading#, and
	status (overflow).
CONTROL	Select type of buffer control.
FILL-AND-STOP	Fill buffer with readings and stop.
PRETRIGGER	Wait for pretrigger event; store
	before and after readings.
PERCENTAGE	Enter percentage of stored read-
	ings before trigger.
READING-COUNT	Enter count of stored readings
	before trigger.
EVENT	Select source for pretrigger event.
CONTINUOUS	Store readings in buffer continu-
	ously.
NEVER	Readings are not stored.
CLEAR-ALL	Clear all stored readings and buffer
	statistics.
COUNT	Select buffer size.
ENTER-COUNT	Enter number of readings to store.
USE-TRIGGER-MODEL	Use (finite) measure count from trig-
	ger model.
FEED	Select type of reading to store.
AFTER-CALC	Store readings after percent or mX+b
	calculation.
BEFORE-CALC	Store readings before percent or
	mX+b calculation.

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