Omega Products CA100 Installation Manual

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Page 1

COMPACT CAL

M-2911

Page 2

Foreword

Note

Trademarks

Revisions

Thank you for purchasing the OMEGA CA100 COMPACT CAL. This User's Manual contains useful information regarding the instrument's functions and operating procedures as well as precautions that should be observed during use. To ensure proper use of the instrument, please read the manual thoroughly before operating it. Keep the manual in the carrying case for quick reference whenever a question arises.

• The contents of this manual are subject to change without prior notice as a result of improvements in the instrument's performance and functions.

• Every effort has been made in the preparation of this manual to ensure the accuracy of its contents. However, should you have any questions or find any errors, please contact your nearest representative.

• Copying or reproduction of any or all of the contents of this manual without Omega's permission is strictly prohibited.

• MS-DOS is a registered trademark of Microsoft Corporation.

• Company names and product names which appear in this manual are the trademarks or registered trademarks of the respective companies.

1st Edition: March 1999

Page 3

Conventions Used in This Manual

Type Symbol Meaning

Cautionary note

To avoid injury, death of personnel or damage to the instrument, the operator must refer to an explanation in the User's Manual.

Calls attention to a procedure, practice or condition, which, if not correctly performed, adhered to, or maintained, could result in injury or death.

Calls attention to a procedure, practice or condition, which, if not correctly performed, adhered to, or maintained, could result in damage to, or destruction of part of the product.

Note

Key [ ] key Represents a key on the front panel.

Checking the Contents of the Package

Unpack the box and check the contents. If the product is not the one you ordered, any item is missing or damage to any item is found, contact the dealer from whom you purchased the instrument.

Calls attention to information which is important in the operation of the instrument.

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Standard Accessories

Carrying case Battery holder

2 Measurement leads (CA100-ML)

User's Manual (M-2911)

8 Alkaline dry cells

2 Ferrite core (CA100-FC)

Fuse

The following standard accessories are supplied with the instrument. Make sure that all items are present and undamaged. Note that the dry cell holder (B9914CV) comes preinstalled in the main unit.

Page 5

Safety Precautions

Ths instrument is an IEC safety class I instrument (provided with a terminal for protective grounding). The following general safety precautions must be observed during all phases of operation, service and repair of this instrument. If this instrument is used in a manner not specified in this manual, the protection provided by the instrument may be impaired. Also, we assume no liability for the customer's failure to comply with these requirements.

General definitions of safety symbols used on the instrument and in this manual

To avoid injury, death of personnel or damage to the instrument, the operator must refer

to an explanation in the User's Manual.

This instrument is protected by double insulation.

DC (Direct current)

Ni-Cd

Recycle

Make sure to comply with the following safety precautions. Failure to do so might result in a fatality or injury to personnel from such hazards as electrical shock, or damage to the instrument.

WARNING

Prohibition of Using the Instrument in a Gaseous Environment

Do not operate the instrument in the presence of inflammable and explosive gases or vapors. Operation of the instrument in such an environment constitutes a safety hazard.

Necessity of Protective Grounding

Never cut off the internal or external protective grounding wire or disconnect the wiring of protective grounding terminal. Doing so poses a potential shock hazard.

Defect in Protection Feature

Do not operate the instrument if there is a defect in protective grounding or fuses. Before commencing operation, always make sure that the protection feature is fault-free.

External Connection

After making sure that grounding is properly carried out, connect the protective grounding before connecting to the measurement or control unit. If you need to touch the circuit, you must turn off the switch and make sure that no voltage is generated.

Page 6

Fuse

To prevent a fire, be sure to use fuses with the specified ratings (voltage, current, type). Before replacing fuses, turn the power off and disconnect the power source if you are using an AC power supply kit. Do not short-circuit the fuse holder.

Removing Covers

There are some areas under high voltage. Do not remove the cover if the power supply is connected. The cover should be removed by qualified personnel only.

To use the AC power supply kit (optional) safely, please comply with the following precautions.

WARNING

Protective Grounding

To prevent electrical shock, be sure to connect the protective grounding before turning on the power.

Power Cord and Plug

To prevent electrical shock or fire, be sure to use the supplied power cord. The main power plug can only be plugged in an outlet with a protective grounding terminal. Do not invalidate protection by using an extension cord without protective grounding.

Power Supply

Ensure that the source voltage matches the voltage of the power supply before turning on the power.

Page 7

Safety Precautions for Using Ni-Cd Battery

Storage

• Please remove the Ni-Cd batteries from the main unit when storing.

• Do not leave the batteries in a hot-temperature environment such as under direct sun light, inside an automobile, or near fire, because this leads to leakage of the alkaline electrolyte.

• For long-term storage (6 months to 2 years), select a location where the humidity is low and the temperature is in the range from 10 to 25 °C.

• When charging for the first time after long-term storage, deactivation of the reactants may have led to decreased battery capacity, but this problem is restored after several cycles of charging and discharging.

• When storing the batteries for more than 6 months, please charge or discharge then recharge the batteries at least once per year to prevent leakage and the decline of performance.

Battery Life

The time of operation of the batteries gradually decreases with repeated use, even when the batteries are fully charged. Though it depends on the condition of use, take 2 years or 500 times as a measure to have the batteries replaced. (A typical battery life is 2 years or 500 times.) Please also note that prolonged storage leads to shortened battery life.

Charging

• Do not charge the batteries in any other instrument.

• Only charge batteries that are completely discharged. Charging batteries that are partially charged results in overcharging. This shortens battery life.

• Avoid overcharging the batteries, because this leads to shortened battery life.

• Charging the batteries for a long time may cause leakage of gases and electrolytes.

WARNING

• Do not disassemble or alter the batteries in any way. The electrolyte inside the batteries is strong alkaline which can damage skin and clothes. Be especially careful of the electrolyte entering the eye, because it may cause blindness.

• Never short the batteries. Heat generated by the batteries may cause burns.

• Never heat or throw the batteries into fire. The batteries can rupture or the electrolyte may spray out.

• Never put water on the batteries or immerse them in water. Such actions can cause heat to be generated or lead to rusting as well as the loss of ability to function.

• Do not use the batteries in any other instrument. The difference in the specification can cause damage to the other instrument.

• Do not pull the cable of Ni-Cd battery back or connector with excessive force.

Page 8

Contents

Foreword Conventions Used in This Manual Checking the Contents of the Package Safety Precautions

Components and Their Functions

Block Diagram .......................................................................................................................................... 9

Functions ................................................................................................................................................... 9

Front Panel .............................................................................................................................................. 10

Side Panel ................................................................................................................................................ 12

Rear Panel ............................................................................................................................................... 13

Before Starting Generation or Measurement

Usage Precautions ................................................................................................................................... 14

Installation Conditions ............................................................................................................................ 15

Installing Ferrite Core ............................................................................................................................. 15

Installing Dry Cells ................................................................................................................................. 16

Supplying AC Power (Optional) ............................................................................................................. 17

Attaching and Charging Optional Ni-Cd Battery Pack ........................................................................... 18

Turning the Power Switch On and Off ................................................................................................... 20

Turning Backlighting On and Off ........................................................................................................... 20

Averaging, Key Type, International Temperature, Temperature Unit Settings ...................................... 21

Generation

Connecting the Output Terminal ............................................................................................................. 23

Before Generation ................................................................................................................................... 23

DC Voltage, DC Current, Resistance ...................................................................................................... 24

Thermocouple, Resistance Temperature Detector .................................................................................. 26

Frequency, Pulse Signal .......................................................................................................................... 28

Measurement

Connecting the Input Terminal ............................................................................................................... 30

Measuring the DC Voltage, DC Current, and Resistance ....................................................................... 31

24 V DC Power Supply

Connecting the Output Terminal ............................................................................................................. 32

Turning Output On and Off .................................................................................................................... 32

Using the RS-232-C Interface

RS-232-C Interface functions ................................................................................................................. 33

Specifications .......................................................................................................................................... 33

Connecting the RS-232-C Interface Cable .............................................................................................. 34

Settings for Communication ................................................................................................................... 35

Before Programming ............................................................................................................................... 39

Using Talk-Only or Printer Mode ........................................................................................................... 39

Troubleshooting

Items to be Checked in the Case of an Abnormality ...............................................................................40

Error Codes and Corrective Actions ....................................................................................................... 40

Maintenance

Calibration ............................................................................................................................................... 41

Replacing the Ni-Cd Batteries ................................................................................................................ 50

Replacing the Backlighting EL ............................................................................................................... 50

Replacing the Fuse .................................................................................................................................. 50

Page 9

Specifications

Generation Functions .............................................................................................................................. 51

Measurement Function ............................................................................................................................ 53

Generation Section .................................................................................................................................. 54

Measurement Section .............................................................................................................................. 54

24 V DC Supply Section ......................................................................................................................... 54

Communications Function ...................................................................................................................... 54

Common Specifications .......................................................................................................................... 54

External Dimensions ............................................................................................................................... 55

Appendix

Communication Commands .............................................................................................................. App-1

Status Byte Format (for <ESC> command) ...................................................................................... App-5

Output Format of Measured Data ..................................................................................................... App-5

Output Format for Talk-Only or Printer Mode ................................................................................. App-6

Output Format for Setting Information ............................................................................................. App-6

Sample Program ................................................................................................................................ App-7

Index

Page 10

Components and Their Functions

Block Diagram

RS-232-C

Power source/communication part

RS-232-C

driver

Source/CPU part

DC/DC

converter

Display

Reference

voltage source

CPU

DCV DCA

Ω

Setting

Current/voltage conversion

Memory

FRQ

Excess voltage protection

Current

detection

Ω

DCA DCV

Excess current

protection

Components and Their Functions

OUT PUT

SOURCE

15V DC

BATT.

Functions

Battery

circuit

Constant

current source

Input

circuit

Shunt resistance

Ω

FUSE

DC/DC

converter

Power source control

Measurement part

24V OUT

converter

Reg.

24V Output part

• Generation Functions

A specified value (in five digits) in function units of voltage, current, resistance, thermocouple, resistance temperature detector (RTD), frequency, or pulse signal can be generated.

Function Description

DC voltage Available in three ranges: 100 mV, 1 V, or 10 V

Direct current Available in 20-mA range. SINK function is also available.

Resistance Available in 3 ranges: 500 Ω, 5 kΩ, or 50 kΩ

Thermocouple Thermoelectromotive force can be generated according to the

Resistance temperature detector A resistance can be generated according to the temperature of PT100

Frequency and pulse signal Frequency is in four ranges: 100 Hz, 1000 Hz, 10 kHz, or 50 kHz.

temperature of type K, E, J, T, N, R or B thermocouple.

resistance temperature detector.

Voltage is in the same range as the 10 V range for voltage generation. Pulse signals with a specified number of bursts (1 to 60000) are available as well as the above.

R.J.INPUT

mA MEASURE

24V OUT

• Measurement Function

Voltage, current, or resistance can be measured and displayed in 4.5 digits independent of the generation function.

Function Description

DC voltage Available in three ranges: 500 mV, 5 V, 35 V

Direct current Available in two ranges: 20 mA, 100 mA. An overrange input protection

fuse comes built into the current-input terminal.

Resistance Available in three ranges: 500 Ω, 5 kΩ, or 50 kΩ

Page 11

Front Panel

General View

The following functions can be selected:

Function Description

Averaging Displays the results of moving averages of measured data. This is useful if the measured

data are unstable or poor due to noise. (See page 21.)

Display hold Halts updating of the displayed measured value.

• 24 V DC power supply

This is a floating output. Available up to 24 V/22 mA DC max.

• Communications function

Using this function, the instrument can be controlled or measured data can be transferred to a personal computer via an RS-232-C interface (D-sub 9 pin). This function also allows the output of setting information or measured data to an ESC/Psupport printer.

• Three-way power supply

Three types of power supply: AA cells, AC adapter (free selection of AC voltages, optional), and Ni-Cd battery pack (optional) are available.

SOURCE

MEASURE 24V OUT

2 3

4 5

POWER

CHARGE

SOURCE

24V OUT

FUNCTION

DCV DCA

Ω Ω

TC RTD FRQ

PULSE

SOURCE MEASURE

CLR

ZERO

SOURCE

RANGE

ENTER

67890

2345

COMPACT CAL

DCV DCA

MEASURE

FUNCTION

RANGE

HOLD

LCD screen

16 15

1312111097 8

1 Power switch

Turns the power on and off.

2 Charging start key

Begins the charging of the Ni-Cd battery pack (optional).

3 Backlight key

Turns backlighting on and off.

Operation keys for generation

4 24 V DC power supply key

Turns the 24 V DC power supply on and off.

5 Function selection key

Selects one of the generation functions: voltage, current, resistance, thermocouple, RTD, frequency, and pulse.

6 Range selection key

Selects the range for setting generation values. For thermocouple or RTD, selects TC or RTD type.

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7 Output on and off key

Turns output on and off.

8 +/- key

Toggles the polarity of the output value.

9 NEXT ENTER key

This switches the associated settings when setting the output values for the frequency and pulse signal. It also fixes the entered value when using the numeric keypad (refer to the following description).

10 ZERO CLR key

This resets the output value set to zero when using the up/down key (refer to the following description). When using the numeric keypad (refer to the following description), the value being entered is canceled and the previous set value is restored.

11 Output value setting keys

This sets the output value for the generation function. Either of the following two key modes can be selected from the menu. The up/down key mode is selected as the factory default setting. Up/down key: This increments or decrements the values by one count for each digit corresponding to the [ ]/[ ]. If you try to increment or decrement using this key with value 9 or 0, the current digit moves up or down by one digit. Numeric keypad: This enters numbers 0 to 9 directly from the keypad.

12 Decimal point key

This enters the decimal point when using the numeric keypad (refer to the above description). When this key is pressed, the digits to the left of the decimal point move to the positions specified on a range basis. When using the up/down key, this key is unavailable.

Components and Their Functions

LCD Screen

Operation keys for measurement

13 Display hold key

This retains displayed values as they are.

14 Range selection key

This selects the measurement range.

15 Function selection key

This selects one of the measuring functions: voltage, current, or resistance.

16 Measurement on and off key

This turns measurement on and off.

1 2

DCV

DCA

ΩΩ

TC RTD FRQ

PULSE

SOURCE

MEASURE

HOLD

SOURCE

OFF

24V OUT

CHARGE END

ITS-90 IPTS-68

INT RJC BRKE JTN

AVERAGE

Pt100

mV mA k

Ω

mV mA

Ω

k C

kHz

CYCLES

DCV DCA

MEASURE

11 10

1 State-of-charge indicator

When using Ni-Cd batteries (optional), this indicates its charge status (CHARGE indicates charging is taking place and CHARGE END indicates charging has completed).

2 Low-battery indicator

This lights up when the battery becomes weak.

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3 Generation function indicator

indicates the currently selected generation function. Each press of the FUNCTION key changes the function from DCV to DCA, Ω, TC, RTD, FRQ, and PULSE in order.

4 Hold indicator

This indicates the measured value is held.

5 Output on and off indicator

On: indicates the output is turned on. Off: indicates the output is turned off.

6 24 V DC power supply indicator

This indicates 24 V DC power is being supplied via the 24 V DC output terminal.

7 Generation range and output display

For voltage, current, resistance, frequency, and pulse: This indicates the decimal place and unit available for setting when selecting a range. Use the up/down key or numeric keypad to specify a value. For thermocouple or resistance temperature detector: This indicates the type of TC, either thermocouple (TC) or resistance temperature detector (RTD), and the temperature available for setting (e.g., ˚C), when selecting a range. Use the up/down key or numeric keypad to specify the temperature.

8 International temperature standard display

This displays the international temperature standard currently selected.

9 Measurement function display

displays the measuring function currently selected. Pressing the FUNCTION key changes the function from DCV to DCA and Ω.

10 Averaging indicator

This indicates that the averaging function is active.

11 Measurement range and measured value display

This indicates the decimal place and unit available for setting when selecting a range. When the measuring function is activated, the measured value is displayed.

Side Panel

Left side as viewed from the front

The following diagram shows the state when the cover is opened:

1 RS-232-C connector

RS-232-C communication interface connector

2 AC adapter jack (input)

This connects to an optional AC adapter. Rated input voltage 15 V DC Maximum rated input current 0.5 A DC

RS-232-C 15V DC

1 2

Page 14

Terminal Side

Rear Panel

MEASURE

R.J. INPUT

24V OUT SOURCE

FUSE

22mA MAX

250V F 125mA

120mA MAX

42V MAX

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

HiHi

28V

MAX

22mA

1 2 4 53

1 RJC sensor input connector

This connects to an RJC sensor (optional).

2 24 V output terminal

This supplies 24 V DC power.

3 Current input terminal

This is used when measuring current.

4 Voltage/resistance input terminal

This is used when measuring voltage or resistance.

5 Output terminal

This outputs the specified source.

This instrument falls under Overvoltage category II (CAT II). Overvoltage (installation) category indicates the impulse withstand voltage level which is regulated by IEC1010-1.

Components and Their Functions

1 Battery storage

This holds the attached dry cells or the optional Ni-Cd battery pack.

CAUTION

• Before turning on the power switch, make sure the battery housing is shut with the cover on properly. Do not open the cover while the instrument is in operation.

Page 15

Before Starting Generation or Measurement

Usage Precautions

Safety Precautions

• Before using this instrument, thoroughly read the "Safety Precautions" on pages 4 and

• Do not remove the cover from the instrument. Some parts of the instrument use high voltage, which is extremely dangerous. When the instrument needs an internal inspection or calibration, contact your nearest representative.

• In case of abnormality If you notice smoke or the instrument seems to be acting abnormally, for example, it generates smoke or emits a strange odor, immediately turn the instrument off and, if an AC power supply kit is in use, disconnect the power cord from the AC outlet. Also turn off the object connected to the input terminal. If the instrument seems to be abnormal, contact your nearest reperesentative.

• AC adapter and power cord Use the dedicated AC adapter. Nothing should be placed on the AC adapter or power cord; also, it should be kept away from any heat sources. When unplugging the power cord from the AC outlet, never pull the cord itself. Always hold the plug and pull it. If the power cord is damaged, contact your dealer. Refer to page 3 for the part number to use when placing an order.

General Precautions when Handling the Instrument

• When moving the instrument Turn off the power to the object connected to the instrument. Turn off the power to this instrument and, if an AC power supply kit is in use, disconnect the power cord from the AC outlet. When carrying the instrument, always use the carrying case.

• Keep input terminals away from electrically charged articles as they may damage the internal circuitry.

• Do not allow volatile chemicals to come into contact with the case or operation panel. Also do not leave them in contact with any rubber or vinyl products for prolonged periods. The operation panel is made of thermoplastic resin, so take care to avoid contact with any heated articles such as a soldering iron.

• Before cleaning the case and operation panel, make sure that the power cord is disconnected from the AC outlet if the AC power supply kit is used. Dampen a clean soft cloth with water and wipe the surface of the case and panel. Water that gets inside the instrument may result in breakdown.

• If the AC power supply kit will not be used over a long period, unplug the power cord from the outlet.

• For handling dry cells, refer to the section, "Installing Dry Cells," on page 16.

• Do not use the instrument with the cover for the battery housing left open.

• Gently wipe the surface with a soft and dry cloth. Do not use chemicals such as benzene or thinner, because these may cause discoloration and deformation.

• Do not stack the instrument.

Page 16

Installation Conditions

• Guide the cable through the clamp filter and lock the core.

• Thread the supplied band through the opening of the clamp filter to fasten the core, and then cut away any extra length of the band.

The instrument must be installed in a place where the following conditions are met.

• Ambient temperature and humidity Ambient temperature: 5 to 40°C (5 to 30°C for charging during generation or measurement) Ambient humidity: 20 to 80% RH (no condensation)

• Flat horizontal location Set the instrument in a level, stable place.

Never install the instrument.:

• In direct sunlight or near sources of heat

• Where the level of mechanical vibration is high

• Near noise sources such as high-voltage equipment or power lines

• Near strong magnetic field sources

• Where an excessive amount of soot, steam, dust or corrosive gases are present.

• In an unstable place

• Where explosions caused by inflammable gases or the like are possible

Note

• To ensure high measurement accuracy, the instrument should be used under the following

conditions: Ambient temperature: 23 ± 5°C Ambient humidity: 20 to 80% RH (no condensation) When using the instrument in temperature ranges of 5 to 18°C or 28 to 40°C, add the temperature coefficient specified in the "Specifications" on page 51 to the accuracy.

• If the ambient humidity of the installation site is 30% or below, use an anti-static mat to prevent

static electricity.

• Internal condensation may occur if the instrument is moved to another area where both the ambient

temperature and humidity are higher, or if the room temperature changes rapidly. In such cases, acclimatize the instrument to the new environment for at least one hour before starting operation.

Before Starting Generation or Measurement

Installing Ferrite Core

This instrument is CE Mark compliant. When using the measurement lead, make sure to attach the accessory clamp filter on it according to the directions indicated below. In addition, when purchasing the optional measurement lead or RJC sensor, make sure to purchase the clamp filter also and attach it according to the directions indicated below. Note that if the clamp filter is not properly attached or used, the standard cannot be satisfied.

Installation

Installation location

• Measurement lead • RJC sensor connection cable

50 mm or less

Page 17

Installing Dry Cells

Installation

CAUTION

When using dry cells, observe the following precautions:

• The use of AA alkaline cells is recommended.

• When inserting a battery, observe the polarity; otherwise, a liquid

spill or explosion may occur.

• Before operating the instrument, make sure that the dry cell holder is inserted into the body and the back cover is closed.

• Do not disassemble, heat, or throw a battery into a fire.

• Do not short out a cell.

• Do not charge a dry cell.

• Do not solder a line onto a dry cell.

• Use new dry cells from the same manufacturer.

• When dry cells become weak, replace all eight cells with new

ones.

• If the instrument will not be used for a long time, remove the dry cells.

1 Make sure that the power switch on the front panel is turned off and no AC power

supply kit is connected..

2 Remove the cover of the dry cell storage on the back of the body. 3 Insert the eight dry cells into the dry cell holder. Make sure that they are seated in

the correct indicated direction of polarity (refer to the following diagram).

4 Attach the dry cell holder to the body and push the connector until it hits the bottom

of the receiving side of the body (refer to the following diagram).

5 Reassemble the cover.

Strap

Cable

To remove dry cells, pull the strap to unplug the connector from the dry cell storage and remove the dry cell holder. Do not pull on the cable of the connector.

Page 18

Low-Battery Indicator

If the dry cells become weak, appears in the upper-left of the display. When this happens, immediately replace the old batteries with new eight alkaline batteries.

Life of Alkaline Batteries

The life of alkaline batteries varies depending on the operating conditions. Refer to the following table:

Generated Output Measurement 24 V DC Backlight Life (when used

20 mA (with 1 kΩ load) on on on Approx. 2 hours 5 V DC (with 500 Ω load) on off off Approx. 10 hours

Supplying AC Power (Optional)

Connecting the Power Cord

Make sure that you perform the following steps before connecting the power. Failure to do so may cause electrical shock or cause damage to the instrument.

• Always use protective grounding to prevent electrical shock.

• Since the power cord supplied with the AC power supply kit has

a 3-prong grounded plug, the AC outlet to which the power cord is to be connected must be a 3-slot grounded terminal.

• Before connecting the power cord, make sure that the power supply voltage complies with the rated electrical power voltage for the instrument.

• Before connecting the power cord, make sure that the instrument's power switch is turned off.

• Never use an extension cord that does not have protective grounding; otherwise, the protection feature will be negated.

• Do not use any AC power supply other than the power supply kit (model 366969) from Omega.

Before Starting Generation or Measurement

Function Power Supply continuously)

WARNING

Connecting the AC Power Supply

1 Make sure that the instrument's power switch is turned off. 2 Connect the optional AC adapter to the AC adapter jack.

Page 19

AC adapter jack

AC adapter

3 Connect the power cord included in the AC power supply kit to the AC power

supply adapter.

4 Plug the other end of the power cord into an AC outlet that meets the following

conditions. The AC outlet must be a 3-slot grounded terminal.

3-prong AC outlet

Power cord

Power Rating

Rated supply voltage: 100 to 120 V AC/200 to 240 V AC Permitted supply voltage range: 90 to 132 V AC/180 to 264 V AC Rated supply voltage frequency: 50/60 Hz Permitted supply voltage frequency range: 48 to 62 Hz Maximum power consumption: 60 VA or below Rated output voltage for AC adapter: 15 V DC Maximum rated output current for AC adapter: 1.33 A

Attaching and Charging Optional Ni-Cd Battery Pack

Attaching the Ni-Cd Battery Pack to the Main Unit

To attach the battery pack to the instrument, follow the next procedure:

WARNING

• Before replacing the Ni-Cd battery pack, be sure to turn off the power switch on the front panel and remove the power cord from the AC outlet to avoid such possible hazards as short-circuiting in the battery-charging circuitry.

• Use only an Ni-Cd battery pack from Omega.

Page 20

1 Make sure that the power switch on the front panel is turned off. 2 Disconnect the power cord from the AC outlet. 3 Remove the cover of the dry cell storage compartment on the back of the body. 4 Insert the spacer on the cable side of the battery pack. 5 Insert the connector of the attached Ni-Cd battery pack until it hits the bottom of the

receiving side of the body (refer to the following diagram).

6 Reassemble the cover.

When removing the Ni-Cd battery pack, pull the strap to unplug the connector from the battery housing. Do not pull on the cable of the connector.

Precautions in Charging

• Since an optional Ni-Cd battery pack is not charged prior to shipment, fully charge the battery pack before operating the instrument for the first time.

• Before charging the battery pack, make sure that it is discharged completely. If charging is started on a battery which has not been discharged completely or on a battery for which charging has been stopped halfway through, the life of the battery pack will be reduced.

• The internal temperature of the instrument rises during charging since the internal power consumption increases. This may cause a degraded accuracy in generation or measurement compared with a normal condition. For accuracy, refer to the section, "Specifications," on page 51.

• This instrument allows charging during generation or measurement operations. In this case, keep the ambient temperature between 5 to 30°C, or the battery pack will become extremely degraded.

• If the AC power supply is interrupted during charging, the instrument waits up to about 30 minutes for restoration of the AC power supply. If the power is not restored by that time, the instrument aborts the charging sequence and automatically turns off. It resumes charging of the battery pack if the power is restored within the given time.

Cable

Before Starting Generation or Measurement

Spacer

Be careful of the direction of the spacer.

Cover

CAUTION

• Use only the AC power supply kit (model: 366969) from Omega for charging.

• When charging, keep the instrument horizontal. Make sure that there is no obstruction around the instrument, so that heat generated in the instrument is properly dissipated.

Page 21

Charging the Battery Pack

1 Supply the instrument with AC power via the method described above. 2 Turn on the power switch. 3 Press the [CHARGE] key.

"CHARGE" is displayed. The instrument then momentarily shows the remaining time every minute. The battery pack is fully charged in about 10 hours, and "CHARGE END" is displayed.

4 Turn off the power switch. 5 Disconnect the power cord and the AC adapter from the instrument.

Display Indicating Low Battery

After a certain length of operation has passed and the battery power weakens, " appears in the upper-left of the screen. When you see this display, immediately charge the pack.

Guideline for continuous operating time

The operating time of the Ni-Cd battery pack is approximately 7.5 hours when in continuous use. Refer to the following table:

Generated Output Measurement 24 V DC Backlight Life (when used

Function Power Supply continuously)

20 mA (with 1 kΩ load) on on on Approx. 2.5 hr. 5 V DC (with 500 Ω load) on off off Approx. 7.5 hr.

Turning the Power Switch On and Off

Before Turning On the Power

For driving this instrument, AA dry cells, an AC power supply (optional), or a Ni-Cd battery pack (optional) is available. Before turning the instrument on, prepare the intended power supply following the above instructions.

Note

Before operating the instrument using dry cells or the Ni-Cd battery pack (i.e., battery driving), disconnect the power cord and AC adapter. If the AC power source remains connected, the instrument will operate on the AC power rather than on the batteries.

Turning the Power on and off

Pressing the power switch on the front panel alternates between on and off. When turning the power switch on, the self-diagnosis function runs, and "OFF" that indicates the output is turned off and " mV" appear on the lower line of the display.

Automatic Power Off

If the instrument has not received a key operation or sending/receiving request through the communication interface for approximately 30 minutes, the power supply automatically turns off. If necessary, turn the power switch back on.

Turning Backlighting On and Off

Backlighting can be turned on so that it is easy to see the screen even if generation/ measurement is done in a dark place. However, this will shorten the life of the batteries when the instrument is being operated by battery.

1 Press the [ ] key. 2 To turn backlighting off, press the [ ] key again.

Page 22

Note

When backlighting the instrument, the internal power consumption increases, and the internal temperature rises. This may cause a degraded accuracy in generation or measurement compared with a normal condition. For accuracy, refer to the section, "Specifications," on page 51.

Averaging, Key Type, International Temperature, Temperature Unit Settings

Settings

This instrument allows the setting of Averaging, Key Type, International Temperature, and Temperature Unit Settings from the maintenance menu.

Averaging setting: This specifies whether to enable (on) or disable (off) the moving

average of the measured data. If the measured data display fluctuates due to noise, set the averaging setting to on to perform the moving averages. The setting defaults to off.

Key-type selection: Either the up/down keys (UP-DN) or numeric keypad (TEN) is

available for the output value setting key. The setting defaults to "UP-DN."

International temperature standard selection: Either of IPTS68 or ITS90 is available for

the international temperature standard. The setting defaults to

"ITS90." Selection of temperature unit: Either ˚C or ˚F can be selected as the temperature unit. The default setting is ˚C.

Setting

1 Press the [NEXT ENTER] key and the [ZERO CLR] key at the same time.

[SP FC] and [End] are displayed.

2 Press the [ ] or [ ] key until [End] on the lower line of the display changes to [Set

uP], and then press the [NEXT ENTER] key.

The setup menu is displayed.

Before Starting Generation or Measurement

3 Pressing the [ ] or [ ] key changes the bottom menu from [AVG] to [KEY] and [t

tYPE]. To set the averaging function, display [AVG] and press the [NEXT ENTER] key.

4 Select [on] or [oFF] using [ ] or [ ] and press the [NEXT ENTER] key.

5 To specify the key type, display [KEY] using [ ] or [ ] and press the [NEXT

ENTER] key.

6 Select [uP-dn] or [tEn] using [ ] or [ ] and press the [NEXT ENTER] key.

7 To set the international temperature standard, display [t tYPE] using [ ] or [ ] and

press the [NEXT ENTER] key.

8 Select the [iPtS68] or [itS90] using the [ ] or [ ] and press the [NEXT ENTER]

key.

9 To set the temperature unit, display [t unit] using the [ ] or [ ] and press the

[NEXT ENTER] key.

10 Select [C] or [F] using the [ ] or [ ] and press the [NEXT ENTER] key.

Page 23

11 Press the [ ] to display [Set uP] on the lower line of the display.

12 Press the [ ] or [ ] to display [End] and press the [NEXT ENTER] key.

The measurement/generation screen is returned.

Page 24

Generation

SOURCE

Red

Black

Target device

Measurement lead

Clip

g n

Connecting the Output Terminal

1 Insert the plug of the measurement lead into the output terminal of the instrument. 2 Pinch the terminals on the target device with the clips on the other side of the lead.

Wiring generating resistance or RTD (3-line or 4-line wiring)

The use of optional input-terminal adapters makes it easy to implement 3-line or 4-line wiring. Input-terminal adapter is an adapter for conversion from safety terminal to binding post. Prepare wire rods in stead of the typical measuring lead and connect it as shown in the following figure (for a three-wire system).

CA100 SOURCE

Sense Lo

Generation

Measurin Instrume

Before Generation

CAUTION

• Do not apply voltage to the output terminal except when the instrument is in the current-generation mode. Otherwise, the internal circuitry may be damaged.

• Since this instrument is calibrated with the voltage drop of the measurement lead excluded, an error due to the resistance at the measurement lead (approx. 0.08 Ω) must be considered.

For accurate generation, be sure to perform auto-zero calibration (i.e., cancel the offset error) before generation.

Effects of executing auto-zero calibration

• During measurement: The displayed data of measurement are held until the auto-zero calibration ends, and sampling is also interrupted if applicable.

• When averaging is enabled: The accumulated data for a moving average is discarded, and a new averaging process starts as the auto-zero calibration ends.

1 Press the [FUNCTION] key on the SOURCE side until [CAL/no] is displayed. 2 Press the [ ] or [ ] key to change the lower display to [YeS]. 3 Press the [NEXT ENTER] key to execute auto-zero calibration. 4 After completing auto-zero calibration, the function switches to DCV.

Page 25

DC Voltage, DC Current, Resistance

Type

Generation Range

Display Setting Range

DCV

100 mV

1 V

10 V

-10 to 110 mV

-0.1 to 1.1 V

-1 to 11 V

DCA 20 mA mA 0 to 22 mA

Ω

500 Ω

5 kΩ

50 kΩ

Ω

kΩ

0 to 550 Ω

0 to 5.5 kΩ

0 to 55 kΩ

The output terminal generates voltage, current or resistance at the specified value.

1 Press the [FUNCTION] key on the SOURCE side to align with the [DCV],

[DCA], or [Ω] that you want.

2 Press the [RANGE] key on the SOURCE side to select the generation range.

3 To change the polarity, press the [+/-] key.

Selecting "-" places a leading minus sign (-) before figures, while selecting "+" places no leading sign.

4 Specify the output value.

• Using [ ] or [ ] (for initial setting)

Press [ ] or [ ] to specify the output value from the rightmost digit. To reset the value to zero, press the [ZERO CLR] key.

• Using the numeric keypad (refer to page 21)

Enter an output value using the numeric keypad and the decimal point key, and

press the [NEXT ENTER]. The figure flickers when entering a value.

When entering decimals, press the decimal point key first and then the

appropriate key or keys on the numeric keypad.

If a value out of the generation range is specified, an error occurs. In this case,

press the [ZERO CLR] to reset to the previous value, and reenter a new value.

5 Press the [SOURCE ON] key to start generation.

[ON] is displayed. To stop the output, press the [SOURCE ON] key again. [OFF] is displayed. [OFF]: Indicates that the relay on the output stage is open.

Voltage generation

CA100

Voltmeter

Vx Vx

Vx: Specified voltage

Current generation

CA100

Ix: Specified current

Ammeter

Resistance generation

CA100

Ohmmeter

(Constant

current

source)

Ix: Current from the constant current

source (measured current)

Rx:Specified value from this

instrument

Vx: Generated voltage value

represented as Ix*Rx

* This function is unavailable for the

constant voltage source.

Page 26

Note

• When outputting, if you change the generation function, generation range, or polarity (only for

current generation), output turns off automatically.

• The resistance generation of this instrument employs an "active impedance" scheme in order to

provide a dummy resistance. This scheme generates a DC voltage appropriate for the current being measured that is supplied by a resistance meter such as a multimeter. The scheme, therefore, can generate correct DC voltages only for the resistance meter used in the measuring method shown in the figure on the previous page (i.e., the value of the supplied current being measured varies depending on the range of resistance generation. For further details, see the specifications of resistance on page 51). Note that connecting a low-impedance device (e.g., a voltage source, capacitor, or resistor) to the output during resistance generation may cause oscillation.

• In the case of the resistance generation function, it takes 10 ms in a 500 Ω range (refer to the

specifications for other ranges) for the instrument-detected resistance measurement current to settle within the given accuracy range. This means that the connecting time must be no less than 10 ms where a device that operates by electrically switching its signal input circuit is used.

• Providing any different type of setting with the [ZERO CLR] and [NEXT ENTER] keys during

resistance generation will abort the generation.

• Providing any different type of setting with the [ZERO CLR] and [NEXT ENTER] keys when the

generation function is either TC, RTD, FRQ, or PULSE will change the function to DCV.

Output Limiter

If the load current when generating a voltage of 1 or 10 V range or the load voltage when generating a current of 20 mA range exceeds the maximum value in the specifications, the protective limiter turns output off. To recover the output, correct the load to a normal state and press the [SOURCE ON] key to turn output on.

Current sinking function

This allows drawing the specified value of the current from an external voltage source in the direction of the Hi terminal.

Generation

CA100

Ix: Specified value of current

To use the function follow the procedure below:

1 Turn off the external power supply (up to 28 V). 2 Connect the external power supply to the output terminal on the instrument. 3 Select [DCA] using the [FUNCTION] key, set the polarity to "-" using [+/-], and

specify the output value.

4 Turn on the external power supply and press the [SOURCE ON] key to turn on

output.

Note

• The current-generation function of the CA100 may result in an unstable output if the CA100 is

connected to a positioner or electro-pneumatic converter having a large input inductance component. Make sure the input inductance component of the equipment to be connected is no greater than 100 µH.

• If the equipment’s input inductance component is unknown, connect the CA100 to the equipment

as shown below, and measure the generated current. If the reading does not stabilize or an accuracy error results at that point, the input inductance component is likely to be greater than 100µH.

CA100

SOURCE (DC mA)

MEASURE (DC mA)

Hi Lo Lo

Input source: Equipment such as a converter

• If the equipment’s input inductance component is too large, connect a 200-Ω resistor and a 1-µF capacitor to the CA100’s output, as shown below. This setup makes it possible to connect an input having an inductance component of up to 3 H to the CA100. (This RC circuitry is available as an accessory part numbered 990 20.)

Page 27

(99020)

SOURCE

CA100

Note however that this additional circuitry reevaluates the CA100’s response specification as noted below. Response: 1 sec (at load resistances no greater than 2 kΩ)

Do not use this circuitry for purposes other than current generation; otherwise, it can produce measurement errors.

(DC mA)

MEASURE (DC mA)

R: 200 Ω ±10%, 1/4 W C: 1 µF ±10%, 50 V (Equivalent to the 533M5002105K resistor from Matsuo Electric)

Hi Lo Lo

Thermocouple, Resistance Temperature Detector

This generates thermo-electric power corresponding to the temperature of thermocouple (TC) or resistance corresponding to the temperature of resistance temperature detector (RTD) from the output terminal.

1 Press [FUNCTION] on the SOURCE side and align to [TC] or [RTD]. 2 Press [RANGE] on the SOURCE side to select TC type.

Type TC/RTD Type Display Temperature Range

Input source: Equipment such as a converter

˚C

-200.0 to +1372.0˚C

RTD

* RTD : The specifications are compatible with both IEC 751-1983 and IEC 751-1995.

TC : The specifications are compatible with both IEC 584-1-1989 and IEC 584-1-1995. To switch the standard, refer to page 21.

Pt100 ˚C -200 to +850˚C

˚C

-250.0 to +1000.0˚C

-210.0 to +1200.0˚C

-250.0 to +400.0˚C

-200.0 to +1300.0˚C

+400 to +1820˚C

-40 to +1767˚C

3 To change the polarity, press the [+/-] key.

Selecting "-" places a leading minus sign (-) before figures, while selecting "+" places no leading sign.

4 Specify the temperature.

• Using [ ] or [ ] (for initial setting)

Press [ ] or [ ] to specify the output value from the rightmost digit. To reset the value to zero, press the [ZERO CLR] key.

• Using the numeric keypad (refer to page 21)

Enter a temperature value using the numeric keypad and the decimal point key

(where applicable), and press the [NEXT ENTER] key. The figure flickers when entering a value.

When entering decimals, press the decimal point key first and then the

appropriate key or keys on the numeric keypad.

If a value out of the generation range is specified, an error occurs. In this case,

press [ZERO CLR] to reset to the previous value, and reenter a new value.

5 Press the [SOURCE ON] key to start generation.

[ON] is displayed. To stop the output, press [SOURCE ON] again. [OFF] is displayed.

Page 28

Note

RJC sensor

With RJC sensor Without RJC sensor

20˚C (798 µV) 813 µV

Generated voltage

CA100

40˚C

CA100

1611 µV Generated voltage

Set temperature

40˚C

Set temperature

• When outputting, if you change the generation function or generation range, output turns off automatically.

• The generation of RTD-use signals in this instrument employs an "active impedance" scheme in order to provide a dummy resistance. This scheme generates a DC voltage appropriate for the current being measured that is supplied by a resistance meter such as a multimeter. The scheme, therefore, can generate correct DC voltages only when the value of the supplied current being measured is 1 to 5 mA. Note that connecting a low-impedance device (e.g., a voltage source, capacitor, or resistor) to the output during resistance generation may cause oscillation.

• In the case of generating RTD-use signals, it takes 10 ms in a 500-Ω range (refer to the specifications for other ranges) for the instrument-detected resistance measurement current to settle within the given accuracy range. This means that the connecting time must be no less than 10 ms where a device that operates by electrically switching its signal input circuit is used.

Reference Junction Compensation

Use a reference junction compensation (RJC) sensor (optional) to calibrate a thermometer containing built-in RJC without using an external 0°C reference junction chamber.

1 Connect an RJC sensor to the RJC sensor input connector.

When connecting, insert the connector until its upper locking hook snaps into place. To disconnect the connector, press the hook lightly down to release the lock and pull it.

Generation

Locking hook

Sensor lead

Note

• Do not pull the sensor lead with the connector locked.

2 Connecting the sensor automatically activates the INT RJC state and thermo-

electric power is output with reference to the temperature detected by the RJC sensor. [INT RJC] is displayed at this time. (For reference temperature measurement accuracy using an RJC sensor, refer to the section "Specifications" on page 52.)

• The thermo-electric power when an RJC sensor is connected can be achieved by subtracting the thermo-electric power detected by an RJC sensor from the thermoelectric power without an RJC sensor.

Page 29

• Compensating the output voltage using the temperature detected with the RJC sensor is executed on a sampling rate of approximately 10-second intervals. It means that there is a delay of up to 10 seconds before the first compensation starts.

• To perform accurate measurement, leave the instrument for a certain time (5 min. at room temperature) before starting the measurement.

Be sure to disconnect the RJC sensor from the instrument when no reference junction compensation is required.

Frequency, Pulse Signal

This generates frequencies and pulse signals at specified values via the output terminal.

CAUTION

Frequency

Voltage (0 to 10 V)

signal

Frequency (1 Hz to 50 kHz)

Pulse signal

Voltage (0 to 10 V)

Frequency (1 Hz to 50 kHz)

: One pulse

Number of generated pulses

(1 to 60000 cycles)

1 To generate frequencies, press [FUNCTION] on the SOURCE side to align with

[FRQ]. [ Hz] is displayed. Jump to step 4. To generate pulse signals, align with [PULSE]. [ CYCLES] appears. Go to step 2.

2 Specify the number of pulses to generate between 1 and 60,000.

• Using [ ] or [ ] (for initial setting)

Press [ ] or [ ] to specify the number of pulses to be output. To reset the value to zero, press [ZERO CLR].

• Using the numeric keypad (refer to page 21)

Enter the number of pulses to generate using the numeric keypad, and press the

[NEXT ENTER] key. The figure flickers when entering a value. If a value out of the range of 1 to 60,000 is specified, an error occurs. In this case, press [ZERO CLR] to reset to the previous value, and reenter a new value.

3 Press [NEXT ENTER].

[ Hz] is displayed.

4 Press [RANGE] on the SOURCE side to select the voltage frequency range.

Type Frequency Range Display Setting Range

FRQ/ 100 Hz Hz 1.0 to 110.0 Hz PULSE

1000 Hz Hz 90 to 1100 Hz

10 kHz kHz 0.9 to 11.0 kHz

50 kHz kHz 9 to 50 kHz

Page 30

5 Specify the voltage frequency to generate.

• Using [ ] or [ ]

Press [ ] or [ ] to specify the voltage frequency to generate from the rightmost

digit. To reset the value to zero, press [ZERO CLR].

• Using the numeric keypad

Enter a voltage frequency to generate using the numeric keypad and the decimal

point key (if applicable), and press the [NEXT ENTER] key. The figure flickers when entering a value.

When entering decimals, press the decimal point key first and then the

appropriate key or keys on the numeric keypad.

If a value out of the voltage frequency range is specified, an error occurs. In this

case, press [ZERO CLR] to reset to the previous value, and reenter a new value.

6 Press [NEXT ENTER].

[ V] is displayed.

7 Specify a voltage to generate between 0 and 10 V.

• Using [ ] or [ ]

Press [ ] or [ ] to specify the voltage to generate from the rightmost digit. To

reset the value to zero, press [ZERO CLR].

• Using the numeric keypad

Enter a voltage generated using the numeric keypad and the decimal point key,

and press the [NEXT ENTER] key. The figure flickers when entering a value.

When entering decimals, press the decimal point key first and then the

appropriate key or keys on the numeric keypad.

If a value out of the 10 V range is specified, an error occurs. In this case, press

[ZERO CLR] to reset to the previous value, and reenter a new value.

8 Press the [SOURCE ON] key to start generation.

[ON] is displayed. To stop the generation, press [SOURCE ON] again. [OFF] is displayed.

Generation

Note

• When outputting, if you change the generation function or generation range, output turns off automatically.

Page 31

Measurement

Connecting the Input Terminal

Connection Precautions

• To prevent electrical shock, a protective grounding connection must be made before connecting the measurement lead.

• Always turn off the power supply to the object being measured before connecting it to the instrument. Never connect or disconnect the measurement lead wires from the object while power is being supplied to it; otherwise, a serious accident may result.

• Make sure that you do not connect a current circuit to the voltage input terminal or vice versa. An incorrect connection may cause damage not only to the circuit or equipment under test and to this instrument, but may also injure the operator.

• Be sure to use the attached measuring lead.

• The maximum allowable potential difference is 42 Vpeak and Cat II for every I/O and ground terminal. However, the maximum allowable potential difference between the negative 24 V OUT terminal and the ground is 18 Vpeak. Never apply a voltage exceeding this tolerance, or else the measured target circuit or equipment may be damaged and the operator injured.

WARNING

Connecting

CAUTION

• Do not apply a voltage exceeding the permitted maximum input voltage, or else the instrument may be damaged. Permitted maximum input voltage: 42 V DC

• Do not apply a current exceeding the permitted maximum input current, or the built-in current input circuit’s protective fuse may burn out. If it does, replace the fuse with a new one. For replacing fuses, refer to page 50. Permitted maximum input current: 120 mA DC

1 Insert the plug of the measurement lead to the input terminal of the instrument. 2 Pinch the output terminals on the target device with the clips on the other side of the

lead.

For measuring DC voltage or resistance

MEASURE

FUSE

250V F 125mA

120mA MAX

42V MAX

Measured

object

Page 32

For measuring DC current

MEASURE

FUSE

250V F 125mA

120mA MAX

42V MAX

Measured

object

Measuring the DC Voltage, DC Current, and Resistance

1 Press the [MEASURE ON] key. 2 Press the [FUNCTION] key on the MEASURE side to align with the [DCV],

[DCA], or [Ω] that you want.

3 Press the [RANGE] key on the MEASURE side to select the measuring range.

Type Measuring Range Display

DCV 35 V

Measurement

DCA 100 mA

Ω

The measured result is displayed. The displayed value is updated every second.

Note

• Any data value being measured that exceeds the 120% of the measuring range will result in overrange. The display then indicates [ range used).

• If no measured data are present immediately after the MEASURE key is turned on or if the measurement function or range is switched to change the data on the display, the reading changes to [

• When you switch the MEASURE key from the off to on, the instrument begins measurement with the settings given immediately before the key was turned off.

• Providing any different type of setting with the [ZERO CLR] and [NEXT ENTER] keys during measurement will abort measurement.

Display Holding On and Off

This determines whether the updating of displayed measured data is halted.

1 Press the [HOLD] key. "HOLD" is displayed. 2 To disable the display holding, press [HOLD] again. "HOLD" disappears from the

display.

5 V

500 mV

20 mA

50 kΩ

5 kΩ

500 Ω

kΩ

Ω

] (the position of the decimal point depends on the

Note

• The "HOLD" state only stops the updating of the display, but allows the instrument to continue sampling data. This means that the measured data are updated through the communication interface even during the "HOLD" state.

• Holding the display is not allowed if the communication mode is “talk-only” or the “printer”mode. (See page 39.)

Page 33

24 V DC Power Supply

Connecting the Output Terminal

Connection Precautions

The permitted maximum potential difference is 42 Vpeak and Cat II for every I/O and earth terminal. However, the permitted maximum potential difference between the negative 24 V OUT terminal and the ground is 18 Vpeak. Never apply a voltage exceeding this tolerance, or the measured object circuit or equipment may be damaged and the operator injured.

• Do not apply a voltage to the 24 V DC output terminal externally, or else the instrument may be damaged.

• If the 24 V DC output terminal is short-circuited or the load current exceeds the range (24 to 30 mA), an error is displayed and the 24 V DC power supply is turned off. In this case, remove the cause of the short circuit or the overload completely and then turn the 24 V DC power supply back on. Note that an overload cannot be detected for the first 5 seconds or so after turning on the 24 V DC power supply.

• When using batteries, continuous running of the instrument with the load current of the 24 V DC power supply at more than 20 mA shortens the operable time extremely.

WARNING

CAUTION

Connecting

1 Insert the plug of the measurement lead into the 24 V DC output terminal of the

2 Pinch the 24 V DC terminals on the target device with the clips on the other side of

24V OUT

22mA MAX

Turning Output On and Off

1 Press the [24 V OUT].

2 To stop the 24 V DC power supply, press [24 V OUT] again.

Note

• If the 24 V DC power supply becomes overloaded, the power supply turns off automatically. To

instrument.

the lead.

Supplied

object

[24 V OUT] appears on the screen and the 24 V DC power is supplied from the output terminal.

[24 V OUT] disappears from the display.

continue supplying 24 V DC power, remove the cause of the overload and then press the [24 V OUT] key again.

Page 34

Using the RS-232-C Interface

RS-232-C Interface Functions

Reception Function

Allows you to make the same settings (except for on and off of the power supply and those related to communication) as those which can be made using the keys on the front panel. This function allows the instrument to receive a request for the output of a generated set-up value, measured value, panel set-up information and error codes.

Transmission Function

Allows the instrument to output a generated set-up value and measured value at a specified cycle. The panel set-up information and status byte can also be output. In addition, error codes which occurred can be output.

Note

• During the talk-only or printer mode (when the printer is connected), only output of the generated set-up value and measured value at a specified cycle is available.

• When using any source other than an AC power supply, the power supply to the circuit for the RS232-C is turned off to increase the operating time available with batteries or the like. Turn on the power supply as necessary. (See page 37.)

Specifications

24 V DC Power Supply

WARNING

When connecting the RS-232-C cable to the connector, make sure the power switch of the instrument is turned OFF. Connect the RS-232-C connector to the remote instrument with the cable before starting the RS-232-C communication.

Electrical characteristics: Conforms to EIA RS-232-C. Connection: Point-to-point Communications: Full-duplex Synchronization: Start-stop system Baud Rate: 150, 300, 600, 1200, 2400, 4800 and 9600 Start Bit: 1 bit (fixed) Data Length: 7 or 8 bits Parity: Even, odd or no parity Stop Bit: 1 or 2 bits Connector: DELC-J9PAF-13L6 (JAE or equivalent) Hardware Handshaking: User can select whether RS and CS signals will always be

true, or be used for control.

Software Handshaking: User can select whether to control only transmission or both

transmission and reception using X-on and X-off signals. X-on (ASCII 11H) X-off (ASCII 13H)

Receiver Buffer Size: 256 bytes

Using the RS-232-C Interface

Page 35

Connecting the RS-232-C Interface Cable

Computer

This instrument

RS [ready for reception of request to send]

SD [Send data]

RD [Received data]

CS [clear to send ready]

When connecting this instrument to a personal computer, make sure that the handshaking, transmission rate and data format selected for the instrument match those selected for the computer. For details, refer to the following pages. Use an interface cable that is shielded and meets the instrument's specifications requirements.

Connectors and Signals

2 1 3 4 5

6 7 8 9

RS-232-C connector

Note: The instrument side is provided with a male D-Sub 9 pin.

2 RD (Received Data): Data received from personal computer

Signal direction: Input

3 SD (Send Data): Data transmitted to personal computer

Signal direction: Output 5 SG (Signal Ground): Ground for signals 7 RS (Request to Send): Signal used to handshake when receiving data from personal

computer

Signal direction: Output 8 CS (Clear to Send): Signal used to handshake when transmitting data from

personal computer

Signal direction: Input Pins 1, 4, 6, and 9 are not used. Make sure, however, that pin 1 (Frame Ground) of the counterpart is grounded.

Signal Direction

The figure below shows the direction of signals used by the RS-232-C interface.

Page 36

RS-232-C Standard Signals and their JIS and CCITT Abbreviations

Signals

Pin No.

Pin 9 connector

Abbreviation

RS-232-C

Name

CCITT

JIS

Pin 25 connector

AB (GND)

BA (TXD)

BB (RXD)

CA (RTS)

CB (CTS)

102 SG

103

104

105

106

Ground for signal

Send data

Clear to send

Received data

Request to send

RS-232-C Standard Signals

Notice on Connecting Printers

• Printers which support ESC/P commands can be used.

• When connecting a printer, refer to the printer specifications to ensure that a properly-

wired shielded cable is used.

• For details on the cable's pin assignments for connection to the CA100 calibrator, refer to this information for an RS-232-C connector.

• Configure the baud rate, handshaking, and so on correctly, according to the specifications of the printer being used.

Settings for Communication

The maintenance menu ([ZERO CLR] + [NEXT ENTER] keys) allows the setting of communications functions.

Settings

Power source for communication

Turns the power supply to communications functions on and off. If this is disabled, no communications function is available.

Using the RS-232-C Interface

Page 37

Communications modes

The following communications modes are available. If the instrument continues providing output for more than two to three hours, it will start delivering signals at an interval approximately one second longer than the preset interval because of the characteristics of the internal clock.

Communication mode Description

Normal mode (nor) Allows operating normal communication functions.

Talk-only mode (tonLY) Outputs set generation value and measured value at specified interval (0*

Printer mode (Print) Outputs set generation value and measured value at specified interval (0*

* If 0 is specified for the interval, one data item is output whenever the [HOLD] key is pressed.

to 3,600 sec.).

to 3,600 sec.) via a printer.

Handshaking

To use an RS-232-C interface to transfer data between this instrument and a computer, it is necessary to use certain procedures by mutual agreement to ensure the transfer of data. These procedures are called "handshaking." Various handshaking systems are available depending on the computers to be used; the same handshaking system must be used for both the computer and this instrument. There are four handshaking system combinations in this CA100 calibrator.

Handshaking System Combination (A circle indicates that the function is available.)

(Control method when sending data to computer)

Software

handshaking

Sending stops when X-OFF is received,

number

and sending is resumed when X-on is

Handshake mode selection

received.

Data send control

Hardware

handshaking

Sending stops when CB (CTS) is false, and sending is resumed when CB is true.

handshaking

(Control method when receiving data from computer)

Software

handshaking

X-OFF is sent when the received data buffer becomes three quarters full, and X-on is sent when the received data buffer becomes one quarter full.

Data receiving control

Hardware

handshaking

CA (RTS) is set to false when the received buffer becomes three quarters full, and is set to true when the received data buffer becomes one quarter full.

Note

• The program for the personal computer must be designed in such a way that the receive buffers of both this instrument and the personal computer never become full.

Precautions Regarding Data Receiving Control

When handshaking is used to control received data, data may still be sent from the computer even if the free space in the receive buffer drops below 64 bytes. In this case, after the received buffer is full, the excess data will be discarded, whether handshaking is in use or not. Data storage to the buffer will begin again when there is free space in the buffer.

handshaking

Page 38

Used

Circuit idle state

256 bytes

When handshaking is in use, reception of data will stop when the free space in the buffer drops to 64 bytes since data cannot

Used Free, 64 bytes

be passed to the main program fast enough to keep up with transmission.

After the reception of data stops, data continue to be passed to the internal

Free, 192 bytes

program. Reception of data starts again when the free space in the buffer increases to 192 bytes.

Whether handshaking is in use or not, if the buffer becomes full, any additional

Used

received data are no longer stored and are discarded.

Data Receiving Control in Handshaking Mode

Setting Data Format

The RS-232-C interface of this instrument performs communications using start-stop synchronization. In start-stop synchronization, one character at a time is transmitted. Each character consists of a start bit, data bits, parity bit, and stop bit. (Refer to the figure below.)

Level returns to idle state (dotted line) or the start

1 character

Data bit

bit of the next new data item (solid line)

(7 to 8 bits)

Stop bit

Using the RS-232-C Interface

1 or 2 bits

Start bit

Parity bit: odd,

even, or none

The table below shows the data format combinations supported by this instrument.

Setting

Start bit

Data length

Parity

Odd

Even

Stop Bit

Selecting the Baud Rate

The following baud rates can be selected. 150, 300, 600, 1200, 2400, 4800, 9600

Selecting the Terminator

The following terminators can be selected. CR+LF, LF, CR

Page 39

Setting

1 Press the [NEXT ENTER] key with the [ZERO CLR] key pressed.

[SP FC] and [End] are displayed.

2 Press [ ] or [ ] until [End] on the lower line of the display changes to [Com], and

then press the [NEXT ENTER] key.

The communication menu appears.

3 Press [ ] or [ ] to turn the communication power supply from [oFF] to [on], and

press the [NEXT ENTER] key. Selecting [oFF] disables the communication function to be set.

4 Select a communication mode using [ ] or [ ] and press [NEXT ENTER].

5 If the Normal mode is selected, jump to step 6.

If the talk-only mode or printer mode is selected, specify a cycle between 0 to 3,600

seconds using [ ] or [ ] and press [NEXT ENTER].

6 Select handshaking using [ ] or [ ] and press [NEXT ENTER] (see page 36).

7 Select the data format using [ ] or [ ] and press [NEXT ENTER] (see page 37).

8 Select the baud rate using [ ] or [ ] and press [NEXT ENTER].

9 Select the terminator using [ ] or [ ] and press [NEXT ENTER].

The settings related to communication have been completed. The display returns to

the initial setting communication menu.

10 Display "End" using [ ] or [ ] and press [NEXT ENTER].

This returns to the measurement/generation screen.

Page 40

Before Programming

Before Programming Format

The following shows the structure of program data. Command + Parameter + Terminator ASCII codes are used. Example SF 1 CRLF

Command

Predefined string of 1 to 3 capital letters

Parameter

Numeric values or character string (ASCII code)

Terminator

Either "CR + LF," "LF," or "CR"

Precautions when Programming

A single line can contain multiple commands. In this case, make sure that command statements (a command + parameters) are separated by semicolons (;).

Note

• A space (or tab) between a command and parameter can be omitted.

• Command statement lines must not exceed 50 characters. Anything after 50 will be truncated.

Command Parameter Terminator

Sample Program

Operating environment of sample programs: Computer IBM PC/AT and compatible system

Software Quick Basic version 4.0/4.5

Sample programs demonstrating the commands are given in the Appendix. Refer to page App-7.

Using Talk-Only or Printer Mode

To start output while in the talk-only or printer mode, press the [HOLD] key. The set generation values and measured values are output at the cycle predefined in the communications menu. During output, the character string "HOLD" blinks on the display. For examples of output, see the section "Output Format for Talk-Only Mode and Printer Mode" on page App-6.

To stop outputting, press the [HOLD] key again.

Using the RS-232-C Interface

Page 41

Troubleshooting

Items to be Checked in the Case of an Abnormality

If the instrument does not operate properly even if the actions given in the table below are performed, if "Servicing required" appears as a corrective action, or if there are any other problems, contact your nearest representative.

Symptom What to Check Reference Pages

Nothing is displayed • Is the connector of the battery holder 16, 18 when the power is turned on. or battery pack connected securely?

Measured data or generated • Is it possible that the data are skewed 15, 23, 25, 30 sourse is odd. because of noise?

Instrument cannot be configured • Are the instrument and controller using 33 to 35 or controlled via the RS-232-C the same communication settings? interface. • Are the connectors connected correctly?

Error Codes and Corrective Actions

Error Description Corrective Action Reference Pages Code

11 Received command not used Check for error in the command sent. 47, App-1

in this instrument

12 Specified parameter value is Correct the value. 47, App-1

outside allowed range.

13 Attempt made to execute a Check the status. 47, App-1

command that is not permitted in a certain status of the instrument.

14 AC power supply is not Connect the AC power supply. 17

connected.

15 There are no Ni-Cd batteries. Install Ni-Cd batteries. 18

16 An error was received during Correct the output or input value from 46

calibration. the reference equipment within the

17 The temperature range exceeds Set the temperature range to one 52

that applicable to reference applicable to compensation. junction compensation.

20 Loop power supply error Check the load. -

23 An output value is generated Check the load. 25

in overcurrent or over-voltage.

60 EEPROM error (set value) Servicing required. -

61 EEPROM error Servicing required. -

(measurement adjust value)

62 EEPROM error Servicing required. -

(generation adjust value)

79 ROM error Servicing required. -

80 RAM error Servicing required. -

90 Overrun error Correct the baud rate or handshaking. 36, 39

91 Unable to output in talk-only Turn on the power source for 35, 38, 39

mode or printer mode. communication.

• Is the battery weak? 17, 20

• Is the plug of the power cord connected 17 securely to the power supply connector of the instrument? Is the plug on the other end connected to the AC outlet securely?

• Is the load condition of generation section within the specifications of the CA100?

• Is the measuring lead connected correctly?

• Are the ambient temperature and humidity within the allowed range?

recommended value range.

Page 42

Maintenance

Calibration

To maintain high accuracy, the instrument should be calibrated once every year. Calibration services are also available from your nearest representative. The following example of calibration using the standard equipment recommended in the section "Selecting the Standards" is described.

Selecting the Standards

Generation Function

Item to be Standard Calibration Measurement Accuracy calibrated Range Range

DCV Digital 100 mV Max. 110 mV ±(10 ppm+1 µV)

DCA Digital 20 mA 22 mA ±(50 ppm+0.4 µA)

Ω Digital 500 Ω Max. 3 V ±(10 ppm+1 mV)

multimeter 1 V Max. 1.1 V ±(10 ppm+5 µV)

10 V Max. 11 V ±(10 ppm+50 µV)

multimeter

multimeter 5 kΩ

50 kΩ

Measurement Function

Item to be Standard Calibration Generation Accuracy calibrated Range Range

DCV Standard DC 500 mV 500 mV ±(20 ppm+5 µV)

voltage 5 V 5 V ±(20 ppm+50 µV) generator 35 V 35 V ±(20 ppm+300 µV)

DCA Standard DC 20 mA 20 mA ±(60 ppm+0.4 µA)

current 100 mA 100 mA ±(40 ppm+1 µA) generator

Ω Precision- 500 Ω 500 Ω±50 ppm(5 ppm/˚C)

resistance 5 kΩ 5 kΩ digital 50 kΩ 50 kΩ multimeter

Required Environment during Calibration

Ambient temperature: 23±1˚C Relative humidity: 45% to 75% RH Power supply voltage: 100 V±5% Power supply frequency: (50/60 Hz)±1 Hz Warm-up time: Before starting calibration, the standard equipment must be

Point to Note during Calibration

Make sure that the AC outlet to which this instrument is to be connected is a 3-slot outlet with a grounding terminal.

Troubleshooting

Maintenance

warmed up for the specified time, and the instrument must be warmed up for at least 4 hours.

Page 43

Check Before Calibrating the Resistance Generation Function

Generate the one of the appropriate resistance values listed in the following table from the instrument, and measure the output voltage using a DMM. If the measured value deviates from the tolerance, calibration is unavailable when generating resistance. Contact your nearest representative.

Range Generated Resistance Tolerance

500 Ω 0.00 Ω±20 µV or less 5 kΩ 0.0000 kΩ±20 µV or less 50 kΩ 0.000 kΩ±200 µV or less

Wiring

Calibrated instrument

MEASURE

FUSE

250V F 125mA

120mA MAX

SOURCE

42V MAX

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

28V

22mA

HiHi

MAX

Measure DCV.

CAUTION

• Do not apply a voltage exceeding the maximum input voltage; otherwise, the input part may be damaged.

• Do not short-circuit or apply an external voltage to output terminals of the instrument or standard equipment, or else their internal circuitry may be damaged.

Guard

ΩGuard

I-

I+

Calibrating the Generation Function

Wiring DCV

Calibrated instrument

MEASURE

FUSE

250V F 125mA

120mA MAX

42V MAX

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

DCA

Calibrated instrument

MEASURE

FUSE

250V F 125mA

120mA MAX

42V MAX

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

SOURCE

28V

22mA

SOURCE

28V

22mA

HiHi

MAX

Measure DCV.

Measure DCA.

Guard

I+

Guard

I+

ΩGuard

I-

ΩGuard

I-

Page 44

Resistance

DANGER-HIGH VOLTAGE

Guard

Procedure

Value recommended for the selected range

Value recommended for "0" calibration point

I-

ΩGuard

Guard

I-

I+

Calibrated instrument

MEASURE

FUSE

250V F 125mA

120mA MAX

42V MAX

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

SOURCE

28V

22mA

HiHi

MAX

Apply DCA.

I+

Hi Lo

Measure DCV.

1 Before turning on the instrument, connect it and the standard equipment. 2 Warm up the instrument and standard equipment. 3 Press the [NEXT ENTER] key with the [ZERO CLR] key pressed.

"SP FC" and "End" are displayed.

4 Press [ ] or [ ] until "End" on the lower line changes to "SourCE."

5 Press [NEXT ENTER] to display the calibration screen for generation. 6 Select one of the generation functions (DCV, DCA, Ω) using the [FUNCTION] key

and press [RANGE] to select the range to calibrate (see page 24). Since each range is calibrated for two points, "FS" and "0" (for resistance, 4 points), 2 values (4 for resistance) must be output from this instrument. The recommended value for the "FS" calibration point appears at the lower line of the display first.

For DCV or DCA 7 Press the [SOURCE ON] key to output the value from the instrument. 8 Read the output value from the instrument displayed on the standard equipment

(DMM), and then input the value into the instrument, and press [NEXT ENTER] to confirm it.

Maintenance

Enter the reading given by the standard

Value recommended for the selected range

Enter the calculated resistance value

9 Press [24V OUT] to toggle the function from "FS" to "0," and repeat step 8 for the

remaining calibration point referring to the recommended value shown on the lower line.

10 Press the [HOLD] key to write the calibrated value to the EEPROM of the

instrument. Perform this operation for each range.

11 Repeat steps 6 to 10 for each range.

ΩΩ

For

Ω (Be sure to make a check of the resistance generation function

ΩΩ

before calibration.) 7 Press [SOURCE ON] to output the value from the instrument. Feed the

Ω

recommended current (see page 46) from the standard equipment (generator).

8 Read the output voltage from the instrument displayed on the standard equipment

Ω

(DMM), and then calculate V/I. Input the calculated result into the instrument, and press the [NEXT ENTER] key to confirm it. To improve the accuracy of calculation, it is recommended that you use a DMM to measure the current generated by the standard equipment.

9 Press [24V OUT] to switch the function from "FS" to one of the remaining

Ω

adjustment points, "0," "-0," or "-FS," and repeat step 8 for each of them referring to the recommended value shown on the lower line.

Page 45

Maintenance

10 Press the [HOLD] key to write the calibrated value to the EEPROM of the

instrument. Perform this operation for each range.

11 Repeat steps 6 to 10 for each range. Returning to the Measurement/Generation screen 12 Press [ ] to display [SP FC].

Press [ ] or [ ] until [End] appears on the lower line of the display.

13 Press the [NEXT ENTER] key to return to the Measurement/Generation screen.

Note

• For resistance calibration, a correction is made on the value averaged from the standard current fed in the normal and the reverse directions, that is, calibration points in the plus (+) and minus (-) directions are required; thus calibration is performed with 4 points.

• If you turn off the power before pressing the [HOLD] key, the set value is not stored.

• The calibrated value is retained even after turning off the power.

Calibrating the Measurement Function

Wiring DCV

Calibrated instrument

MEASURE

FUSE

250V F 125mA

120mA MAX

SOURCE

42V MAX

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

22mA

28V

HiHi

MAX

Input DCV

DANGER-HIGH VOLTAGE

Guard

I+

Hi Lo

I-

DCA

Calibrated instrument

MEASURE

FUSE

250V F 125mA

120mA MAX

SOURCE

42V MAX

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

28V

22mA

HiHi

MAX

DANGER-HIGH VOLTAGE

Guard

I+

Hi Lo

I-

Input DCA

Resistance

Calibrated instrument

MEASURE

FUSE

250V F 125mA

120mA MAX

SOURCE

HiHi

42V MAX

28V

22mA

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

Calibration point "0"

MAX

Calibrated instrument

MEASURE

FUSE

250V F 125mA

120mA MAX

SOURCE

HiHi

28V

42V MAX

22mA

MAX

Lo Lo

ALL TERMINALS 42V PEAK MAX TO GND.

Calibration point "FS"

Procedure 1 Before turning on the instrument, connect it and the standard equipment. 2 Warm up the instrument and standard equipment. 3 Press the [NEXT ENTER] key with the [ZERO CLR] key pressed.

The maintenance menu ("SP FC" and "End") is displayed.

High-accuracy resistance

Page 46

Measured

value

Recommended

value

Measured

value

Recommended

value

Measured

value

Recommended

value

Measured

value

Recommended

value

4 Press [ ] or [ ] until "End" on the lower line changes to "mEAS."

5 Press [NEXT ENTER] to display the calibration screen for measurement. 6 Select one of the measurement functions (DCV, DCA, Ω) using the [FUNCTION]

key and press [RANGE] to select the range to calibrate. Three values (two for resistance) must be entered into the instrument from the standard equipment to calibrate one range.

The recommended value for the "FS" calibration point appears at the lower line of

the display first.

For DCV or DCA 7 Enter the value into the instrument from the standard equipment. (If the

recommended value has not been entered, enter the value), and then press [NEXT ENTER] for confirmation.

8 Press [24V OUT] to switch the function from "FS" to one of the remaining

adjustment points, "0," and "-FS," and repeat step 7 for each of them referring to the recommended value shown on the lower line.

9 Press [HOLD] to write the calibrated value into the EEPROM of the instrument.

Perform this operation for each range.

10 Repeat steps 6 to 9 for each range.

ΩΩ

For

Ω

ΩΩ

7 Connect a high-accuracy resistance of the specified value and measure the

kΩ

resistance. Correct the value of the calibration point and press [NEXT ENTER] to confirm it.

8 Press the [24 V OUT] key and wire for the "0" calibration point and do the

kΩ

calibration. The calibration point is toggled by pressing the [24 V OUT] key between [FS] and [0].

9 Press [HOLD] to write the calibrated value into the EEPROM of the instrument.

Perform this operation for each range.

10 Repeat steps 6 to 9 for each range. Returning to the Measurement/Generation screen 11 Press [ ] to display [SP FC].

Press [ ] or [ ] until [End] appears on the lower line of the display.

12 Press the [NEXT ENTER] key to return to the Measurement/Generation screen.

Note

• When calibrating the resistance measurement, if the resistance of the lead connecting terminals is not negligible, measure the resistance through the lead, and enter the value for the "0" calibration point into the instrument.

• When calibrating the resistance measurement, if an error in the value of precision resistance or the resistance of the wiring lead is not negligible, measure the resistance through the lead and highaccuracy resistance, and enter the value for the "FS" calibration point into the instrument.

• If you turn off the power before pressing the [HOLD] key, the set value is not stored.

• The calibrated value is retained even after turning off the power.

Maintenance

Page 47

Recommended Value for Calibration Ranges and Points

Calibrating the Generation

The values of "FS" or "0" ("-FS," or "-0") vary depending on the object to measure. Send the appropriate value listed in the following table from the instrument to the standard equipment, and enter the value measured using the standard equipment into the instrument. If the entered value deviates from the one listed in the table by more than ±20%, an error is assumed.

Function Range Unit 0 FS -0 -FS Remarks

DCV 100 mV 0.000 100.000 – –

DCA 20 mA 0.0000 20.0000 – –

Resistance 500(A1) Ω 0.000 500.000 0.000 500.000 I=±1 mA

I:Current fed when calibrating the resistance generation. Feed a plus (+) current for "FS" and "0," and a

minus (-) current for "-FS" and "-0."

1 V 0.00000 1.00000 – – 10 V 0.0000 10.0000 – –

sink mA –0.0000 –20.0000 – –

500(A2) Ω 0.000 500.000 0.000 500.000 I=±5 mA 5(A1) kΩ 0.00000 5.00000 0.00000 5.00000 I=±0.1 mA 5(A2) kΩ 0.00000 5.00000 0.00000 5.00000 I=±0.5 mA 50(A) kΩ 0.0000 50.0000 0.0000 50.0000 I=±50 mA

Calibrating the Measurement

The values of "FS", "0", or "-FS" vary depending on the targets to measure. Enter an appropriate value listed in the table from the standard equipment into the instrument. If the entered or specified value for "FS" or "-FS" deviates from the one listed in the table by more than ±20% or the value for "0" deviates from the one listed in the table by more than ±100 digits, an error is assumed.

Function Range Unit 0 FS -FS Remarks

DCV 500 mV 0.00 500.00 –500.00

DCA 20 mA 0.000 20.000 –20.000

Resistance 500 Ω 0.000 500.00 –

5 V 0.0000 5.0000 –5.0000 35 V 0.000 35.000 –35.000

100 mA 0.00 100.000 –100.000

5kΩ 0.0000 5.0000 – 50 kΩ 0.000 50.000 –

Page 48

Commands for Calibration

The following communications commands are available for calibration. Before executing these commands, see the descriptions on pages 41 to 46.

Turns the averaging function on and off/queries the current setting. Syntax for setting AGm <terminator>

m=0: Averaging is off.

1: Averaging is on.

Syntax of query AG? <terminator> Example of response AG1

Specifies and queries the generation data. Syntax for setting CDm <terminator>

"m" represents the generation value of DCV, DCA, or resistance.

Syntax of query CD? <terminator> Example of response CD100.000 Description • The generation value is

configurable within a range as wide as can be keyed in at each range. Set the value, however, within the recommended limits of the given calibration point. Any setpoint exceeding these limits will result in error code 16. Example: For a calibration point of DCV 100 mV, the range is

-999.999 to 999.999.

Makes calibration item setting/queries the current setting. Syntax for setting CLm <terminator>

m=3: Calibration of generation

4: Calibration of measurement

Syntax of query CL? <terminator> Example of response CL3

CMF

Specifies the calibration function for measurement/ queries the current setting. Syntax for setting CMFm <terminator>

m=0: DCV

1: DCA 2: Resistance

Syntax of query CMF? <terminator> Example of response CMF0

Calibration for measurement:

DCV DCA Resistance

m=0:+FS +FS +FS

1:000 2:-FS -FS -

Syntax of query CP? <terminator> Example of response CP0

Confirms the measured data when calibrating a measurement, and inputs and queries the DMM measured values. Syntax for setting CSm <terminator>

"m" represents the measured value of DMM.

Syntax of query CS? <terminator> Example of response CS1.00000 Description • The measured value for a DMM

is configurable within a range as wide as can be keyed in at each range. Set the value, however, within the recommended limits of the given calibration point. Any setpoint exceeding these limits will result in error code 16. Example: For a calibration point of DCV 10 V, the range is

-99.9999 to 99.9999.

CSF

Specifies the calibration function for generation/queries the current setting. Syntax for setting CSFm <terminator>

m=0: DCV

1: DCA 2: Resistance

Syntax of query CSF? <terminator> Example of response CSF0 Description • If the function is changed during

generation, the generation is turned off. To turn on the generation, issue an SO command again.

Maintenance

Makes calibration point setting/queries the current setting. Syntax for setting CPm <terminator>

Calibration for generation:

DCV DCA* Resistance

m=0: FS (S)FS +FS

1:0 (S)0 0 2:- - -FS 3:---0 *(S) is for SINK.

Page 49

Writes the calibration data.

Syntax for setting CW <terminator> Description • The result of calculation is

written to the EEPROM after completing calibration.

• If the calibration point is not set, error 16 occurs indicating a calibration error.

ESC S

Outputs a status byte.

Syntax for setting ESC S <terminator> Description • This outputs the status byte (n=0

to 127, n represents the decimal number converted from the binaries of bits 0 to 7) generated by the instrument. For details on the status byte, see page App-5.

Enables/Disables the header addition to the output data/ queries the current setting. Syntax for setting Hm <terminator>

m=0: Disabled

1: Enabled

Syntax for query H? <terminator>

Example of response H1 Description For details on the header, see the

output format of measured values on page App-5.

Selects the key type used and queries the current setting. Syntax for setting KTm <terminator>

m=0: Up/Down key

1: Numeric keypad

Syntax of query KT? <terminator> Example of response KT0

Starts/stops measurement/queries the current setting. Syntax for setting MOm <terminator>

m=0: Stop measurement

1: Start measurement

Syntax of query MO? <terminator> Example of response MO1

Outputs measured data.

Syntax for query OD <terminator> Description For the output format of the

measured data, see page App-5.

Outputs error information.

Syntax for query OE <terminator> Example of response ERR11 Description • Outputs a recently occurred

error.

• For the meanings of error numbers, see the troubleshooting section (page 40).

Starts or ends generation/queries the current setting. Syntax for setting SOm <terminator>

m=0: Stop generation

1: Start generation

Syntax of query SO? <terminator> Example of response SO1

Specifies the calibration range for generation/queries the current setting. Syntax for setting SRm <terminator>

DCV DCA Resistance

m= 0: 100 mV 20 mA 500 Ω (1 mA)

1: 1 V - 5 kΩ (1 mA) 2: 10 V SINK 50 kΩ 3: - - 500 Ω (5 mA) 4:--5 kΩ (5 mA)

Syntax of query SR? <terminator> Example of response SR0 Description • If the range is changed during

generation, the generation is turned off. To turn on the generation, issue an SO command again.

Specifies the calibration range for measurement/queries the current setting. Syntax for setting MR m <terminator>

DCV DCA Resistance

m= 0:500 mV 20 mA 500 Ω

1:5 V 100 mA 5 kΩ 2:35 V - 50 kΩ

Syntax of query MR? <terminator> Example of response MR0

Page 50

Switches between the normal and calibration modes/ queries the current setting. Syntax for setting SYm <terminator>

m=0: Normal mode

1: Calibration mode

Syntax of query SY? <terminator> Example of response SY1 Description • If a communications command

for the normal mode is received during the calibration mode, error 13 occurs.

Selects the international temperature standard/queries the current setting. Syntax for setting TTm <terminator>

m=0: IPTS-68

1: ITS-90

Syntax of query TT? <terminator> Example of response TT0

Selects the temperature unit/queries the current setting. Syntax for setting TUm<terminator>

m=0 : ˚C

1 : ˚F

Syntax of query TU?<terminator> Example of response TU1

Maintenance

Page 51

Replacing the Ni-Cd Batteries

The service life of Ni-Cd batteries is reduced if they are used repeatedly, even if they are completely charged. The interval between battery replacement differs depending on the operating conditions, but you should replace them approximately every two years or after recharging them 500 times. Battery pack replacement must be done as described on page 18.

Replacing the Backlighting EL

The EL for backlighting is consumable. The EL can be used continuously for approximately 5000 hours before its brightness falls by half. It is recommended that the EL be replaced after approximately 5000 hours of use (i.e., about 6 months at 24-hour continuous operation). It is not possible for user personnel to replace the EL, so please contact your nearest representative.

Replacing the Fuse

• The fuse used must be of the specified rating in order to minimize the risk of a fire hazard. Never use a fuse of any other rating and never short-circuit the fuse holder to bypass the fuse.

• Before replacing the fuse, be sure to turn the power switch off, remove the connections from each input and output terminal and remove the power cord from the AC outlet.

WARNING

Fuse Position and Replacement Method

The current input terminal accommodates a built-in fuse. A fuse is contained in the fuse holder as shown below. To replace the fuse, turn the fuse holder counterclockwise with your fingers to remove it, and then replace the fuse with a new one.

Fuse Ratings

When you order a spare fuse, specify the following part number.

Ratings Part No.

250 V, 125mA, Quick acting A1501EF

The following fuses are used in the instrument. It is not possible for the user to replace these fuses, so please contact your nearest representative.

Using place Ratings Part No.

Main board (F1) 250 V AC 315mA A1445EF Main board (F2) 250 V AC 1A A1432EF

Page 52

Specifications

The accuracy specifications vary depending on usage. The following specifications indicate the accuracy at an ambient temperature of 23°C ± 5°C, after performing autocalibration, and are applicable for one year after calibration. They do not include measuring lead parts. The conditions for the temperature factors are 5°C or more but less than 18°C, and more than 28°C up to 40°C.

Generation Functions

DCV

Range 100 mV 1 V 10 V

Displaying Resolution 100.000 mV 1.00000 V 10.0000 V

Generating Range –10 to 110 mV –0.1 to 1.1 V –1 to 11 V

Guaranteed Accuracy Range 0 to 100 mV 0 to 1 V 0 to 10 V

Accuracy (*1) ± (% of setting +% of range)

With EL turned off, without charging 0.02 + 0.01 0.02 + 0.005 0.02 + 0.005 With EL turned on, without charging 0.025 + 0.015 0.025 + 0.01 0.025 + 0.01 With charging 0.04 + 0.025 0.035 + 0.01 0.035 + 0.01

Temperature Coefficient ± (% of setting +% of range)/°C

Maximum Output (*2) – 10 mA 10 mA

Output Resistance Approx. 6.5 Ω Approx. 30 mΩ Approx. 30 mΩ *1 If you turn off the EL or stop charging while the EL is on and charging is in progress at the same time, it takes two hours for the

accuracy in that condition to fall within the specified rating.

*2 If the applied output exceeds the maximum output, the output limiter operates. (A manual reset is required.)

DCA

Range SOURCE 20 mA SINK 20 mA*

Displaying Resolution 20.000 mA 20.000 mA

Generating Range 0 to 22 mA 0 to –22 mA

Guaranteed Accuracy Range 0 to 20 mA 0 to –20 mA

Accuracy (*2) ± (% of setting +% of range)

With EL turned off, without charging 0.025 + 0.015 0.025 + 0.03 With EL turned on, without charging 0.03 + 0.02 0.03 + 0.035 With charging 0.04 + 0.035 0.045 + 0.05

Temperature Coefficient ± (% of setting +% of range)/°C

Maximum Output (*3) 24 V 28 V *1 SINK: A function extracts the current of the specified value in the direction of the Hi terminal from an external voltage generating

source (up to 28 V).

*2 If you turn off the EL or stop charging while the EL is on and charging is in progress at the same time, it takes two hours for the

accuracy in that condition to fall within the specified rating.

*3 If the applied output exceeds the maximum output, the output limiter operates. (A manual reset is required.)

0.003 + 0.002 0.002 + 0.001 0.002 + 0.001

0.003 + 0.003 0.003 + 0.003

Specifications

Resistance (*1)

Range 500 Ω 5 kΩ 50 kΩ

Displaying Resolution 500.00 Ω 5.0000 kΩ 50.000 kΩ

Generating Range 0 to 550 Ω 0 to 5.5 kΩ 0 to 55 kΩ

Guaranteed Accuracy Range 0 to 500 Ω 0 to 5 kΩ 0 to 50 kΩ

Accuracy (*2) ± (% of setting +% of range)

With EL turned off, without charging 0.02 + 0.02 0.05 + 0.03 0.1 + 0.1 With EL turned on, without charging 0.025 + 0.02 0.06 + 0.03 0.11 + 0.11 With charging 0.035 + 0.1 0.065 + 0.1 0.12 + 0.3

Temperature Coefficient ± (% of setting +% of range)/°C

Maximum Output 2 V 2 V 2 V

Remarks

*1 Resistance Generation: The equivalent resistance generation system from detecting the resistance measurement current and the

generating voltage drop. The specifications are valid within the measured current and voltage shown in the remarks column.

*2 If you turn off the EL or stop charging while the EL is on and charging is in progress at the same time, it takes two hours for the

accuracy in that condition to fall within the specified rating.

0.002 + 0.01 0.002 + 0.01 0.002 + 0.03

1 mA ≤ measuring current 0.1 mA ≤ measuring current 0.01 mA ≤ measuring current ≤ 5 mA, and output voltage ≤ 1 mA, and output voltage ≤ 0.1 mA, and output voltage of 2 V or less of 2 V or less of 2 V or less

Page 53

Thermocouple

Range (*1)KEJ TNRB

Displaying 1000.0°C 1000.0°C 1000.0°C 100.0°C 1000.0°C 1000°C 1000°C Resolution

Generating Range

Guaranteed Same as the generating range Accuracy Range

Accuracy (*2, *3)

With EL –200 to –100°C :0.6°C –250 to –200°C: 1.2°C –210 to –100°C : 0.6°C –250 to –200°C : 1.5°C –200 to –100°C:1.0°C –40 to 100°C: 1.5°C 400 to 600°C: 2.0°C turned off, –100 to 400°C:0.5°C –200 to –100°C:0.6°C –100 to 800°C : 0.5°C –200 to 400°C : 0.5°C –100 to 900°C: 0.7°C 100 to 1767°C : 1.2°C 600 to 800°C: 1.5°C without 400 to 1200°C :0.7°C –100 to 600°C : 0.5°C 800 to 1200°C : 0.7°C 900 to 1300°C:0.8°C 800 to 1820°C: 1.1°C charging 1200 to 1372°C : 0.9°C 600 to 1000°C: 0.6°C

With EL –200 to –100°C :0.7°C –250 to –200°C: 1.4°C –210 to –100°C : 0.7°C –250 to –200°C : 1.9°C –200 to –100°C:1.2°C –40 to 100°C: 1.9°C 400 to 600°C: 2.4°C turned on, –100 to 400°C: 0.6°C –200 to –100°C:0.7°C –100 to 800°C:0.6°C –200 to 400°C : 0.6°C –100 to 900°C : 0.8°C 100 to 1767°C : 1.6°C 600 to 800°C: 1.9°C without 400 to 1200°C :0.8°C –100 to 600°C : 0.6°C 800 to 1200°C : 0.8°C 900 to 1300°C:0.9°C 800 to 1820°C: 1.5°C charging 1200 to 1372°C : 1.0°C 600 to 1000°C: 0.7°C

With –200 to –100°C: 1.0°C –250 to –200°C : 1.9°C –210 to –100°C:1.0°C –250 to –200°C:3.0°C –200 to –100°C: 1.7°C –40 to 100°C:3.0°C 400 to 600°C: 3.4°C charging –100 to 400°C: 0.9°C –200 to –100°C:1.0°C –100 to 800°C:0.9°C –200 to 400°C : 0.9°C –100 to 900°C : 1.1°C 100 to 1767°C : 2.6°C 600 to 800°C: 3.0°C

Temperature 0.05°C –250 to –200°C :0.1°C 0.05°C –250 to –200°C:0.2°C –200 to –100°C: 0.1°C 0.2°C 0.2°C Coefficient –200 to 1000°C: 0.05°C –200 to 400°C:0.05°C –100 to 1300°C : 0.05°C

Thermocouple Output Internal Resistance

ReferenceJunction Compensation: temperature, the accuracy of the sensor must be added. The output correction is performed every 10 seconds. Specifications of RJC sensor:Measuring range: -10 to 50°C Accuracy between 18 and 28°C: ±0.5°C (including the instrument) Accuracy between -10 and 18°C, 28 to 50°C: ±1°C (including the instrument) Length of the cord: Approx. 1.5 m

*1 Complies with both JIS-C1602-1981 and 1995 *2 RJC accuracy is excluded *3 If you turn off the EL or stop charging while the EL is on and charging is in progress at the same time, it takes two hours for the accuracy

–200 to 1372°C –250 to 1000°C –210 to 1200°C –250 to 400°C –200 to 1300°C –40 to 1767°C 400 to 1820°C

400 to 1200°C: 1.1°C –100 to 600°C :0.9°C 800 to 1200°C:1.1°C 900 to 1300°C : 1.2°C 800 to 1820°C : 2.5°C

1200 to 1372°C: 1.3°C 600 to 1000°C:1.0°C

Approx. 6.5 Ω

Based on the optional RJC sensor. If the output correction is performed based on the reference contact

in that condition to fall within the specified rating.

Resistance Temperature Detector (*1)

Range PT100

Displaying Resolution 100.0°C

Generating Range –200 to 850°C

Guaranteed Accuracy Range Same as the generating range

Accuracy (*2)

With EL turned off, –200 to 0°C:0.3°C without charging 0 to 400°C:0.5°C

With EL turned on, –200 to 0°C:0.4°C without charging 0 to 400°C:0.6°C

With charging –200 to 0°C:0.6°C

Temperature Coefficient 0.04°C

*1 Resistance Generation: The equivalent resistance generation system from detecting the resistance measurement current and the

generating voltage drop. The specifications are valid within the measured current and voltage shown in the remarks column. The accuracy is at measured current of 1 to 5 mA (PT100)

*2 If you turn off the EL or stop charging while the EL is on and charging is in progress at the same time, it takes two hours for the

accuracy in that condition to fall within the specified rating.

400 to 850°C:0.8°C

400 to 850°C:0.9°C

0 to 400°C:0.8°C

400 to 850°C:1.1°C

Page 54

Frequency, Pulse Signal

Range 100 Hz 1000 Hz 10 kHz 50 kHz

Displaying Resolution 100.0 Hz 1000 Hz 10.0 kHz 50 kHz

Generating Range 1 to 110 Hz 90 to 1100 Hz 0.9 to 11.0 kHz 9 to 50 kHz

Guaranteed Accuracy Range 1 to 100 Hz 100 to 1000 Hz 1 to 10 kHz 10 to 50 kHz

Accuracy 1 digit 1 digit 1 digit 1 digit

Maximum Output 10 mA 10 mA 10 mA 10 mA

Waveform Rectangular wave approx. 50% of duty factor

Output Level 10 V DC range Output Level Accuracy ± (10% of setting + 10 mV)

Number of pulses 1 to 60000 cycles

Measurement Function

DCV

Range 500 mV 5 V 35 V

Displaying Resolution 500.00 mV 5.0000 V 35.000 V

Displaying Range –599.99 to 599.99 mV –5.9999 to 5.9999 V –41.999 to 41.999 V

Guaranteed Accuracy Range –500.00 to 500.00 mV –5.0000 to 5.0000 V –35.000 to 35.000 V

Accuracy (*) ± (% of reading +% of range)

With EL turned off, without charging With EL turned on, without charging With charging 0.035 + 0.02 0.035 + 0.02 0.035 + 0.02

Temperature Coefficient ± (% of reading +% of range)/°C

Input Resistance 1 GΩ or more Approx. 1 MΩ Approx. 1 MΩ

* If you turn off the EL or stop charging while the EL is on and charging is in progress at the same time, it takes two hours for the

accuracy in that condition to fall within the specified rating.

0.02 + 0.01 0.02 + 0.01 0.02 + 0.015

0.025 + 0.01 0.025 + 0.01 0.025 + 0.015

0.002 + 0.001 0.002 + 0.001 0.002 + 0.001

DCA

Range 20 mA 100 mA

Displaying Resolution 20.000 mA 100.00 mA

Displaying Range –23.999 to 23.999 mA –119.99 to 119.99 mA

Guaranteed Accuracy Range –20.000 to 20.000 mA –100.00 to 100.00 mA

Accuracy (*) ± (% of reading +% of range)

With EL turned off, without charging With EL turned on, without charging With charging 0.04+0.03 0.055+0.04

Temperature Coefficient ± (% of reading +% of range)/°C

Input Resistance 20 Ω or less

* If you turn off the EL or stop charging while the EL is on and charging is in progress at the same time, it takes two hours for the

accuracy in that condition to fall within the specified rating.

0.025+0.02 0.04+0.03

0.03+0.02 0.045+0.03

0.002+0.001 0.002+0.001

Resistance

Range 500 Ω 5 kΩ 50 kΩ

Displaying Resolution 500.00 Ω 5.0000 kΩ 50.000 kΩ

Displaying Range 0 to 599.99 Ω 0 to 5.9999 kΩ 0 to 59.999 kΩ

Guaranteed Accuracy Range 0 to 500.00 Ω 0 to 5.0000 kΩ 0 to 50.000 kΩ

Accuracy (*) ± (% of reading +% of range)

With EL turned off, without charging With EL turned on, without charging With charging 0.09+0.03 0.09+0.03 0.09+0.04

Temperature Coefficient ± (% of reading +% of range)/°C

Measurement Current Approx. 1 mA Approx. 100 µA Approx. 10 µA

* If you turn off the EL or stop charging while the EL is on and charging is in progress at the same time, it takes two hours for the

accuracy in that condition to fall within the specified rating.

0.055+0.015 0.055+0.015 0.055+0.02

0.065+0.02 0.065+0.02 0.065+0.03

0.005+0.002 0.005+0.002 0.005+0.002

Specifications

Page 55

Generation Section

Response Time

Voltage limiter 28.5 V or more Current limiter 12 mA or more (only for functions of DCV, frequency, pulse) Load condition 0.01 µF or less (for DCV, Ω, TC, RTD, frequency, pulse), 100 µH or less (DC mA) Thermocouple generation Without external reference contact, zero-point reference output

10 ms 1 V DC, 10 V DC ranges: The time necessary for the output to be settled within the accuracy range from when it started to vary. 10 ms 500 Ω range: The time necessary for the output to be settled within the accuracy from when the regulated current was fed. (Including RTD output) 300 ms other than the above ranges: The time necessary for the output to be settled within the accuracy range from when it started to vary.

With external reference contact (B9638CR), reference temperature measuring accuracy

±0.5°C (where the measured temperature is 23°C±5°C) ±1.0°C (where the measured temperature is -10 to 18°C or 28 to 50°C)

Measurement Section

Display Update Time 1 sec. Max. Input Voltage, Current Voltage terminal 42 V, Current terminal 120 mA Current Terminal Input Protection Fuse, Part No. A1501EF, 250 V, 125 mA, Quick acting CMRR 120 dB or more (50/60 Hz), RS = 1 kΩ NMRR 60 dB or more (50/60 Hz) Release Voltage for Resistance Measurement max 4.5 V Average Number for Moving Average 5 sampling data

24 V DC Supply Section

Output Voltage 24 V DC ± 1 V Max. Output Current 22 mA DC Output Protection Output is turned off at 30 mA or more

Communications Function

RS-232-C Interface 9-pin D-SUB connector Transfer Method Start-stop synchronization system Transfer Rate 150, 300, 600, 1200, 2400, 4800, 9600 bits/s Function Specifications Talk-only/Normal mode, Handshaking mode, data format selection available

Common Specifications

Complying safety standard General safety: EN61010

· Overvoltage category II (CAT II)

· Pollution degree 2

EMC : IEC1326-1:1997 DRAFT, IEC1326-10:1996 DRAFT

· Except, use a double shielded cable for the RS-232-C cable and separate the RS232-C cable and the measuring lead by 50 mm or more.

· The cable layout during the emission test was as follows. The output lead of the generation section was bent perpendicularly to the left at 20 cm from the terminal section. The output lead of 24VOUT was bent perpendicularly to the right at 20 cm from the terminal section. The cord from the AC adapter was bent perpendicularly towards the front at 5 cm from the connector. The measuring lead, RJC sensor cable and the RS-232-C cable was positioned perpendicular to the terminal section and the connector in a straight line.

· The output voltage range of the AC adapter is 15 V DC ±0.75 V.

The influence under the immunity environment is as follows

Function Test Condition

Range Setting Value Accuracy

Generation 1V 0.5V ±5% of range

20mA 10mA ±5% of range 50kΩ 10kΩ±5% of range

Measurement 5V 1V ±20% of range

20mA 0mA ±30% of range 50kΩ 10kΩ±20% of range

Page 56

Power Supply

Charging the battery pack Timer charging by the instrument (approximately 10 hours) AC adapter (optional)

Ni-Cd Battery Pack (optional) 1200 mAh, 9.6 V, recycle-designated part, service life of 2 years (varies according to the

AA Cells Eight AA alkaline cells

Automatic Power Off: Approximately 30 minutes under the following conditions: No key or communication

Display Backlighting Segmented LCD, EL backlighting

Warm-up Time Approx. 5 minutes

Power Consumption 55 VA or less

Insulation Resistance 20 MΩ or more for one minute at 500 V DC (between terminals/each terminal and AC

Withstanding Voltage 350 V AC for one minute (between terminals)

Operating Temperature/Humidity Ranges

Storage Temperature/Humidity Range -20 to 45°C, 90% RH or less (No condensation allowed)

I/O terminals Maximum applied voltage is less than 42 Vpeak and CAT II between terminals/each

Operating altitude Max. 2000 m

External Dimensions 237 x 137 x 63 mm (does not include projections)

Weight Approx. 1.2 kg (including 8 dry cells)

AC adapter, Ni-Cd battery pack, or commercially available AA alkaline cells; the Ni-Cd battery pack can be recharged only within the instrument.

Input: 100 to 240 V AC, 50/60 Hz, 40 to 55 VA Permitted Input Voltage Range: 90 to 264 V AC Permitted Input Frequency Range: 48 to 62 Hz

operating conditions), part number B9914PS Continuous operating time for guidance:

With generating 5 V DC (with 500 Ω load), and operating measuring function: Approx. 7.5 hours With generating 20 mA (with 1 kΩ load), operating measuring function, 24 V DC power supply, EL lit: Approx. 2.5 hours

Continuous operating time for guidance:

With generating 5 V DC (with 500 Ω load), and operating measuring function: Approx. 10 hours With generating 20 mA (with 1 kΩ load), operating measuring function, 24 V DC power supply, EL lit: Approx. 2 hours

operation is performed while being run on batteries.

adapter power line)

1500 V AC for one minute (between each terminal and AC power line)

For generation or measurement (normal), or charging without generation or measurement running: 5 to 40°C, 20 to 80% RH (no condensation) For charging with generation or measurement running: 5 to 30°C, 20 to 80% RH (no condensation)

terminal and ground. Except, negative 24 VOUT terminal is 18 Vpeak or less.

External Dimensions

63 237

Unit:mm

147

137

Specifications

Page 57

Appendix

Communication Commands

Makes the current function setting/queries the current setting. Syntax for setting ASm <terminator>

m=0: Source

1: SINK

Syntax for query AS? <terminator> Example of response AS0

Turns the backlighting on and off/queries the current setting. Syntax for setting BLm <terminator>

m=0: Off

1: On

Syntax for query BL? <terminator> Example of response BL1

Starts charging the battery pack when being connected to the AC power supply.

Syntax for setting BT <terminator> Description • Issuing this command without

connecting to the AC power supply results in error 14.

• Error code 15 occurs if there is no Ni-Cd battery connected.

Selects the terminator type used for output data/queries the current setting. Syntax for setting DLm <terminator>

m=0: CR + LF

1: CR 2: LF

Syntax for query DL? <terminator> Example of response DL0

• International temperature standard

• Temperature unit

ESC S

Outputs a status byte.

Syntax for setting ESC S <terminator> Description • This outputs the status byte (n=0

to 127, n represents the decimal number converted from the binaries of bits 0 to 7) generated by the instrument. For details on the status byte, see page App-5.

Enables/Disables the header addition to the output data/ queries the current setting. Syntax for setting Hm <terminator>

m=0: Disabled

1: Enabled

Syntax for query H? <terminator> Example of response H1 Description • For details on the header, see the

output format of measured values on page App-5.

Enables/Disables data hold/queries the current setting. Syntax for setting HDm <terminator>

m=0: Display update

1: Display hold

Syntax for query HD? <terminator> Example of response HD0 Description • Although the display is in "hold"

status, the system continues updating measurement data.

Moves down the "m-th" digit of the generated value by one digit. Syntax for setting DWm <terminator>

m=1 to 5

Description • This command has no query.

• This is valid only when the up/ down key is selected.

ESC C or RC

Initializes the set information of the instrument. Syntax for setting ESC C <terminator>

RC <terminator>

Description • When initializing the information

using these commands, the following are not initialized:

• Communication items

• Key type

• Average

Appendix

App-1

Page 58

Makes the status byte mask setting/queries the current setting. Syntax for setting IMm <terminator>

m=0 to 63 1: Measurement end 2: Output change end 4: Syntax error 8: Overrange 16: Loop power supply error 32: Error on output

Syntax for query IM? <terminator> Example of response IM6 Description: • Set the value representing the

information to be retrieved. If more than one bit is to be retrieved, the sum of the number of those bits must be set as "m." For instance, if 3 bits, "Measurement end," "Syntax error," and "Overrange," are to be retrieved, set "m" to 13 (1+4+8=13).

• For details on status bytes, see page App-5.

Sets the measuring function/queries the current setting. Syntax for setting MFm <terminator>

m=0: DCV

1: DCA 2: Resistance

Syntax for query MF? <terminator> Example of response MF1

Starts/Stops measurement/queries the current setting. Syntax for setting MOm <terminator>

m=0: Stop

1: Start

Syntax for query MO? <terminator> Example of response MO1

Outputs measured data.

Syntax for query OD <terminator> Description For the output format of the

measured data, see page App-5.

Outputs error information.

Syntax for query OE <terminator> Example of response ERR11 Description • Outputs the most-recently-

generated error.

• For the meanings of error numbers, see the troubleshooting section (page 40).

Queries whether an RJC sensor is connected.

Syntax for query OR <terminator> Description The following are the responses:

0: Connected 1: Not connected

Outputs the setting information.

Syntax for query OS <terminator> Description • For the output format of the

measured data, see page App-5.

Enable/Disable auto-zero calibration/queries the current setting. Syntax for setting SCm <terminator>

m=0: Enable auto-zero calibration

1: Disable auto-zero calibration

Syntax for query SC? <terminator> Example of response SC0

Sets the measurement range/queries the current setting. Syntax for setting MRm <terminator>

DCV DCA Resistance

m= 0:500 mV 20 mA 500 Ω

1:5V 100 mA 5 kΩ 2:35 V - 50 kΩ

Syntax for query MR? <terminator> Example of response MR0

Queries the battery charge state.

Syntax for query OB <terminator> Description The following are the responses:

0: Off 1: Charging 2: Charging completed

App-2

Page 59

Sets generated value/queries the current setting. Syntax for setting SDm <terminator>

DCV

(100 mV) m = -10.000 to

110.000 (1 V) m = -0.10000 to 1.10000 (10 V) m = -1.0000 to 11.0000

DCA

(20 mA) m = 0.000 to 22.000 (SINK) m = -22.000 to 0.000

Resistance

(500 Ω) m = 0.00 to 550.000 (5 kΩ) m = 0.0000 to 5.5000 (50 kΩ) m = 0.0000 to 55.000

RTD

(PT100) m = -200.0 to 850.0

(K) m = -200.0 to 1372.0 (E) m = -250.0 to 1000.0 (J) m = -210.0 to 1200.0 (T) m = -250.0 to 400.0 (R) m = -40.0 to 1767 (N) m = -200.0 to 1300.0 (B) m = 400.0 to 1820

Frequency/Pulse frequency

(100 Hz) m = 1.0 to 110.0 (1 kHz) m = 90 to 1100 (10 kHz) m = 0.9 to 11.0 (50 kHz) m = 9 to 50

Frequency DCV/Pulse DCV

(10 V) m = -1.0000 to 11.0000

Pulse

m=1 to 60000

Syntax for query SD? <terminator> Example of response SD100.000

Sets the generated function/queries the current setting. Syntax for setting SFm <terminator>

m=0: DCV

1: DCA 2: Resistance 3: TC (thermocouple) 4: RTD (resistance temperature

detector) 5: Frequency 6: Frequency DCV 7: Pulse 8: Pulse DCV 9: Pulse frequency

Syntax for query: SF? <terminator> Example of response SF0 Description During generation, if the function

is changed, generation is turned off. The generated value is also reset to zero.

Starts/Stops generation/queries the current setting. Syntax for setting SOm <terminator>

m=0: Generation stop

1: Generation start

Syntax for query SO? <terminator> Example of response SO1

Sets the generation range/queries the current setting. Syntax for setting SRm <terminator>

DCV Resistance

m= 0:100 mV 500 Ω

1:1 V 5 kΩ 2:10 V 50 kΩ

RTD TC Frequency/Pulse

frequency

m=0: - B 100Hz

1: PT100 E 1 kHz 2: - J 10 kHz 3: - K 50 kHz 4: - N 5: - R 6: - T -

Syntax for query SR? <terminator> Example of response SR1 Description • Frequency DCV and pulse DCV

are fixed in a 10 V range. The pulse function has no range setting, either.

• During generating, if the range is changed, generation is turned off. The generated value is also reset to zero.

• SR command is unavailable for switching the current function source/SINK. Use the AS command.

Switches between the normal and calibration modes/ queries the current setting. Syntax for setting SYm <terminator>

m=0: Normal mode

1: Calibration mode

Syntax for query SY? <terminator> Example of response SY1 Description • If a command for the calibration

mode is received during the normal mode, error 13 occurs.

Moves up the "m-th" digit of the generated value by one digit. Syntax for setting UPm <terminator>

m=1 to 5

Description: • This command has no query.

• This is valid only when the UP/ DOWN key is selected.

Appendix

App-3

Page 60

Start/Stop the 24 V DC power supply/queries the current setting. Syntax for setting VOm <terminator>

m=1: Stops supply

0: Starts supply

Syntax for query VO? <terminator> Example of response VO1

App-4

Page 61

Status Byte Format (for <ESC> command)

bit7

(Fixed)

bit6

(Fixed)

bit5

Output

error

bit4 Loop power supply error

bit3

Overrange

error

bit2

Syntax

error

bit1

Output

change

end

bit0 Measurement end

bit 7: Fixed to 0 bit 6: Fixed to 1 bit 5: This is set to 1 if an error occurs during output. It is retained until a status byte is

fetched.

bit 4: This is set to 1 if an error occurs in the loop power supply. It is retained until a

status byte is fetched. bit 3: This is set to 1 if an overrange occurs. It is retained until a status byte is fetched. bit 2: This is set to 1 if an inhibited operation or command is processed, a command

cannot be interpreted, or an out-of-range parameter is specified. It is retained

until a status byte is fetched. bit 1: This is set to 1 if the output value varies with the output in status and stabilizes.

It is retained until a status byte is fetched. bit 0: This is set to 1 if data are fixed when measuring. It is retained until a status byte

is fetched.

Output Format of Measured Data

Individual Data Structure

Each data item consists of a header section (4 bytes), data section (10 bytes), and a terminator.

Header Data Terminator

Header section

The header section consists of 4 bytes (h1 to h4).

h1 h2 h3 h4

h1: Data type

V: Voltage A: Current O: Resistance

h2 and h3: Measurement division

DC: Direct current R2: Two-wire resistance

h4: Data status

N: Normal A: Average O: Overrange E: Abnormal data (no data)

Appendix

App-5

Page 62

Data section

The data section consists of 10 bytes (d1 to d10).

d1 d2 d3 d4 d5 d6 d7 d8 d9

d10

d1 to d7: Floating-point, fixed-point part d8 to d10: Floating-point characteristic

If the unit has no "k" or "m," it is represented as "E+0."

If the unit has a "k" or "m," "k" is represented as "E+3," and "m" is

represented as "E-3."

Data when overrange occurs

99999.E+3 Data when no data reside

99999.E+3

Output Format for Talk-Only or Printer Mode

For the talk-only or printer mode (when connected with a printer), the generated set-up value or measured value is output.

Example of output

Source: Function DCV

Range 100mV Data 100.000mV

Measure: Average OFF

Range 35V Data 0.000V

Output Format for Setting Information

Measure on and off Function DCV/DCA/R Range Set range Source on and off Function Set function Range Set range Data Generation level value 24 V Output on and off Light on and off Charge Off/Charging/Completed

Example of Output:

Measure On Function DCV Range 35V Source ON Function DCV Range 100mV Data 100.000 24V Output OFF Charge OFF

App-6

Page 63

Sample Program

'*******************************************************************

'* * '* CA100 COMAPCT CAL (RS-232-C) * '* * '* Output 50 mV in DCV 100 mV range * '* * '******************************************************************* ' OPEN "COM1:9600,N,8,1,CS0,DS0,LF" FOR RANDOM AS 1 'Set communication mode ' PRINT #1, "RC" 'Initialize settings PRINT #1, "SF0" 'Set to DCV function PRINT #1, "SR0" 'Set to 100 mV range PRINT #1, "SD50.000" 'Set the generated value to 50 mV PRINT #1, "SO1" 'Start generation ' CLOSE #1 END

'******************************************************************* '* * '* CA100 COMAPCT CAL (RS-232-C) * '* * '* Make 100 measurements, determine the max. and min. values * '* and display the result. * '* * '******************************************************************* ' OPEN "COM1:9600,N,8,1,CS0,DS0,LF" FOR RANDOM AS 1 'Set communication mode ' DIM RDATA$(100) COUNT = 0: MAXNO = 0: MINNO = 0: ERRNO = 0: 'Initialize parameters MCOUNT = 100: 'Set measurement count LF$ = CHR$(&HA)

PRINT #1, "RC": 'Initialize settings PRINT #1, "H1": 'Turn ON header PRINT #1, "MO1": 'Start measurement PRINT #1, "MF0": 'Set to DCV function PRINT #1, "MR0": 'Set to 100 mV range PRINT #1, CHR$(&H1B) + "S": 'Initialize status byte LINE INPUT #1, STB$ CLS ' Main routine LOOP1: PRINT #1, CHR$(&H1B) + "S": 'Get status byte LINE INPUT #1, STB$ IF LEFT$(STB$, 1) = LF$ THEN STB$ = MID$(STB$, 2) SB = VAL(STB$) IF (SB AND 8) <> 0 THEN GOTO ERRPROC: 'Over rangeÅH IF (SB AND 1) <> 0 THEN GOSUB READM: 'Measurement complete? LOCATE 1, 1: PRINT COUNT; "Samples" IF COUNT = MCOUNT THEN GOTO MEASEND FOR I = 0 TO 10000: NEXT I 'Wait

Appendix

App-7

Page 64

GOTO LOOP1 ' MEASEND: CLS FOR Y = 0 TO MCOUNT / 4 - 1 YPOS = CSRLIN FOR X = 0 TO 3 XPOS = X * 20 + 1 LOCATE YPOS, XPOS PRINT RDATA$(X + Y * 4) + "(" + STR$(X + Y * 4) + ")": 'Display measurement result IF YPOS = 24 THEN YPOS = YPOS - 1 NEXT X NEXT Y PRINT "MAX=", RDATA$(MAXNO): 'Display max. value PRINT "MIN=", RDATA$(MINNO): 'Display min. value PRINT "ERR=", ERRNO: 'Display the number of occurrences of over range CLOSE #1 END ' Routine to acquire measured data READM: PRINT #1, "OD": 'Get measured data LINE INPUT #1, STRDATA$ IF LEFT$(STRDATA$, 1) = LF$ THEN STRDATA$ = MID$(STRDATA$, 2) STS$ = MID$(STRDATA$, 4, 1) IF STS$ = "E" THEN RETURN: 'Data abnormal? IF STS$ = "O" THEN RETURN: 'Over rangeÅH SDATA = VAL(MID$(STRDATA$, 5, 7)): 'Convert measured data RDATA$(COUNT) = MID$(STRDATA$, 5, 10): 'Get numerical data section IF COUNT = 0 THEN MAX = SDATA IF COUNT = 0 THEN MIN = SDATA IF MAX < SDATA THEN GOSUB GETMAX IF MIN > SDATA THEN GOSUB GETMIN COUNT = COUNT + 1 RETURN ' Routine to obtain the max. value GETMAX: MAX = SDATA MAXNO = COUNT RETURN GETMIN: ' Routine to obtain the min. value MIN = SDATA MINNO = COUNT RETURN ' Error routine ERRPROC: ERRNO = ERRNO + 1 GOTO LOOP1

App-8

Page 65

Index

24 V DC output terminal .......................................................... 13

24 V DC power supply ............................................................. 32

A Page

AC adapter .................................................................................. 3

Connection .......................................................................... 17

Accessories (optional) ................................................................ 3

Auto-zero calibration ................................................................ 23

Averaging ................................................................................. 10

Setting ................................................................................. 21

B Page

Backlight .................................................................................. 20

Baud rate .................................................................................. 37

Block diagram ............................................................................ 9

C Page

Calibration ................................................................................ 41

Calibrating the generation function .................................... 42

Calibrating the measurement function ................................ 44

Commands .......................................................................... 47

Command list ............................................................... 47, App-1

Communication command ................................................. App-1

Communications function ........................................................ 34

Current sinking function ........................................................... 25

D Page

Pulse signal ......................................................................... 28

Resistance ........................................................................... 24

Resistance temperature detector (RTD) ............................. 25

Thermocouple (TC) ............................................................ 25

H Page

Handshaking ............................................................................. 36

I Page

Input terminals .......................................................................... 13

Connecting .......................................................................... 30

International temperature standard selection ............................ 21

K Page

Key-type selection .................................................................... 21

L Page

LCD screen ............................................................................... 11

M Page

Measurement ......................................................................... 9,30

DC current (DCA) .............................................................. 31

DC voltage (DCV) .............................................................. 31

Resistance ........................................................................... 31

Model name ................................................................................ 2

Data format ............................................................................... 37

Display hold ............................................................................. 31

Dry cells ..................................................................................... 3

Low-battery indicator ................................................... 11, 17

Life ...................................................................................... 17

Installation .......................................................................... 16

E Page

Error code ................................................................................. 40

External dimensions ................................................................. 55

F Page

Ferrite core ................................................................................. 3

Installation .......................................................................... 15

Front panel ................................................................................ 10

Fuse, replacement of ................................................................ 50

G Page

Generation ............................................................................ 9, 23

DC current (DCA) .............................................................. 24

DC voltage (DCV) .............................................................. 24

Frequency ........................................................................... 28

N Page

Ni-Cd battery pack ..................................................................... 3

Charging ............................................................................. 18

Low-battery indicator ................................................... 11, 20

Installation & replacement ............................................ 18, 50

Operating time .................................................................... 20

Normal mode ............................................................................ 36

O Page

Output terminal ........................................................................ 13

Connecting .......................................................................... 23

Output format

For measured data ......................................................... App-5

For setting information ................................................. App-6

For the talk-only or printer mode ................................. App-6

Output limiter ........................................................................... 25

Overrange ................................................................................. 31

P Page

Power switch ...................................................................... 10, 20

Printer mode ....................................................................... 36, 39

Index

Index-1

Page 66

Index

R Page

Reference Junction Compensation ........................................... 27

RJC sensor ................................................................................ 27

RS-232-C interface ................................................................... 33

Baud rate ............................................................................. 37

Commands .............................................................. 47, App-1

Communications modes ..................................................... 36

Connector ...................................................................... 12, 34

Data format ......................................................................... 37

Handshaking ....................................................................... 36

Terminator .......................................................................... 37

S Page

Sample program ................................................................. App-7

Side panel ................................................................................. 12

Specifications ........................................................................... 51

Standard accessories ................................................................... 3

Status byte format ............................................................... App-5

Suffix code ................................................................................. 2

T Page

Talk-only mode .................................................................. 36, 39

Temperature unit selection ....................................................... 21

Terminator .......................................................................... 37, 39

Index-2

Omega Products CA100 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual