Extech Instruments CMM-17 User manual

88888

sec

0-20

4-20

OFF

MAX

AVG

MIN

ACDC

SHIFT

SCAN

Remote

OUT

SBY

88888

Level

ACDC

4-20 0-20

sec

AUTO

Quick Start

CMM-17 Process Calibrator Multimeter

•Constant Voltage

•mA Source

•Square Wave

•Auto Scan/Ramp

•Dual Display Multimeter

•Rechargeable Batteries

This guide provides an overview of the meter. For more detailed information, refer to the

CMM-17 User’s Guide provided with the meter.

Introduction

This process calibrator/meter is a hand-held, battery-operated instrument for testing and

troubleshooting power electronic systems. This device can be used not only for instrument

system maintenance, but also for maintaining, servicing industrial meters, testing electronic

circuits and electronic equipments. The meter can also be used to measure or calibrate

sensors or transmitters in automotive or automatic control system.

The meter generates a high precision constant voltage, constant current and square wave

output and includes a full feature, high accuracy multimeter. The precision source and the

measurement functions can perform simultaneously.

Main Features:

•Generates and Measures Signal simultaneously

•1,200Ωdrive capability with special yellow lead for 20mA simulation

•High precision Constant voltage, Constant Current and Square wave outputs

•Intelligent Output and Standby control

•Built-in Ni-MH rechargeable battery

•Smart Charger design without battery removal

•Brightness EL backlight

•Coarse or Fine output adjust

•The % scale readout for 4-20mA or 0-20mA

•Adjustable steps and time interval for Auto Scan

•Adjustable resolutions and start for linear Ramp output

•1ms Peak hold to capture inrush voltage and current easily

•Temperature test with the option of 0°C compensation

•Frequency, Duty cycle and Pulse width measurements

•Dynamic Recording for MIN/MAX/AVG

•Data Hold with Manual or Auto Trigger and Relative modes

•Diode and Audible Continuity test

•Bi-directional optical computer interface with SCPI commands

•Safe, precise and fast closed-case calibration

•50,000 count precision True-RMS digital multi-meter and designed to meet IEC-1010

CAT. II 250V standards

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Back to the Extech CMM-17 Product Page

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

SAFETY INFORMATION

A WARNING identifies conditions and actions that may cause hazard(s) to the user;

A CAUTION identifies conditions and actions that may damage this Device.

Table-1 International Electrical Symbols

AC - Alternating Current

DC - Direct Current

AC and DC - Alternating and Direct Current

Ground

Double Insulation

See Explanation In The Manual

To avoid electric shock, injury, or damage to this instrument:

•Read this operation manual completely before using this device and follow all safety

instructions.

•This device is for indoor use, altitude up to 2,000m.

•Avoid working alone.

•Use the device only as specified in this manual; otherwise, the protection provided by the

meter may be impaired.

•Never measure Voltage when the current measurement is selected.

•Do not use this device if it looks damaged.

•Inspect the leads for damaged insulation or exposed metal. Replace damaged leads.

•Disconnect the power and discharge all high-voltage capacitors before testing in the

resistance, continuity, and diode function.

•Use caution when working above 70V DC or 33V RMS and 46.7V peak, these voltages

may cause a shock hazard.

•Always keep your hands behind the protective guard of the probe when measuring.

•Select the proper function and disconnect the test leads from test points before changing

functions.

•Do not mix with different types of batteries. Always use specified battery.

•The meter is safety-certified in compliance with EN61010 (IEC 1010-1, IEC 1010-2-031)

Installation Category ΙΙ 250V Pollution Degree 2.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

Setup and Output a process calibration signal

1. Set the side switch on the left side to the M/S position

2. Turn the function switch to select combined function for the output function required

(, mA, or V) and related input function will be used simultaneously.

3. Press the “SHIFT” button to shift the buttons for output setting.

4. Use the arrow buttons (3/ 4for digit selection, 5/ 6for value) to set the output

value.

5. Connect the OUTPUT terminals to the device to be tested.

6. Press the OUTPUT button. The process signal will become active.

7. Press the OUTPUT button to return the output to the standby mode.

Figure-1 Quick Output Operation

WARNING

Read "SAFETY INFORMATION" before usin

this

1. Set switch

to M/S (side)

2. Turn the

function switch to

select combined

function

3. Press SHIFT

for output setting

4. Use the

arrow buttons

to set the

out

ut value.

5. Output

Terminals

6/7.

Press OUTPUT

button to toggle

signal ON/OFF

88888

sec

0-20

4-20

OFF

MAX

AVG

MIN

ACDC

SHIFT

SCAN

Remote

OUT

SBY

88888

Level

ACDC

4-20 0-20

sec

AUTO

88888

sec

0-20

4-20

OFF

MAX

AVG

MIN

ACDC

SHIFT

SCAN

Remote

OUT

SBY

88888

Level

ACDC

4-20 0-20

sec

AUTO

INPUT- ACV and Frequency Measurements

1. Set the side switch on the left side to the Mor M/S position

2. Turn the rotary switch to select combined function for “V” and the output function ( ,

mA or V) as desired.

3. Press the “AC/DC” button momentarily to select AC voltage measurement.

4. Press the “Dual” button momentarily to set frequency measuring on secondary display.

5. Connect the INPUT terminals by test leads to the source to be tested.

Figure-2 ACV/ Hz Measurement

1. Set switch

to M or M/S

(side)

2. Turn the

function switch to

“V” function

3. Press

momentarily to

select AC

volta

e test

4. Press momentarily

to set frequency

measuring on

secondary display

5. Connect

the INPUT

terminals by

test leads to

the source to

be tested

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

GETTING STARTED

Display Illustration

Figure-3 LCD Display

1. Remote control

2. Thermocouple type

3. Output enable/disable

4. Secondary display for output and input

5. Constant voltage output

6. Square wave output for Hz

7. Square wave output for %

8. Square wave output for mS

9. Output/input units

10. Scan output

11. Ramp output

12. Shift button operation

13. Diode/audible continuity

14. Auto range

15. Relative mode

16. Low battery

17. Auto power off icon

18. Data Hold (manual trigger)

19. Primary display for input

20. Input units

21. Positive/negative trigger slope for % and mS tests

22. Without ambient temperature compensation

23. % 4-20/4-20mA

24. % 0-20/0-20mA

25. Dynamic recording

Pushbutton Operation

The operation of the push-buttons is shown below. When a button is pressed, a

related symbol will be lit, and the beeper will sound. Turning the rotary switch to

another position will reset current operation of the push buttons.

INPUT BUTTONS

Figure-4 Input Buttons

BLUE: To select

DC, AC or AC+DC

measuring

PEAK: Press and

hold for more than

1 sec. to toggle

PEAK Hold

ON/OFF for V/ mA

RANGE: Change

measuring range.

AUTO: Press and hold

for more than 1 sec. to

set Auto-range

DUAL: Select

different

combination

displays

SHIFT: Press to shift

button operation for

INPUT ( OFF) or

OUTPUT ( ON)

: Press and hold for

more than 1 sec. to

toggle backlit ON/OFF

Hz: Select Hz, %

and Pulse width

tests on Primary

display. Press and

hold for more than

1 sec. to exit.

HOLD: Freeze existing

measured value. Press

again to trigger next

measuring value

Press and hold for

more than 1sec. to exit

data trigger hold.

REL: Set the value on the

display to be subtracted.

°C°F: Press and hold for

more than 1 sec. to toggle

mV and temperature tests.

MAX MIN: Press and hold for

more than 1 sec to toggle

Dynamic recording mode.

Press this button momentarily

to cycle through MAX, MIN,

AVG and present (MAX AVG

MIN) readings at recording

mode.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

OUTPUT BUTTONS

Figure-5 Output Buttons

Slide Switch

Turn the slide switch to the position accordingly:

Figure-6 Slide Switch

3(LEFT)/ 4(RIGHT):

Select which Digits or polarity to be adjusted

For voltage and current output, press this button momentarily to select which Digits

or polarity to be adjusted. The selected position will flash on the secondary display.

←

→

←

→

←

→

←

→

←

→

←

→

OUTPUT: Press momentarily to toggle the

output state ON and OFF. The

means this signal has been sent out, and

means the signal has been disabled

output.

MODE:

Select output modes for CV (CC),

SCAN and RAMP.

Select Hz, %, pulse width and

Level adjustments for Square

wave output.

SHIFT: Press to shift button operation

for INPUT ( OFF) or

OUTPUT ( ON)

: Press and hold for more than 1

sec. to toggle backlit ON/OFF

5(UP)/ 6(DOWN):

Adjust digit or polarity

Press momentarily to increase/

decrease 1 count for present digit or

toggle the polarity of output state.

M/S: Provide power for

Measuring and Source

function.

M: Provide power for

Meter (INPUT) only.

Charge: Charge batteries

by using the standard DC

adapter

Slide Switch

Charging indication

Green: Fully charged

Red: Under charged

External DC adaptor

jack:

Plug in the external DC

adapter to charge the

batteries or to power the

device.

CMM-17 Quick Start V1.2 03/05

Rotary Switch

Set the slide switch to the M or M/S position. Turn the meter ON and select the combined

function you desire by turning the rotary switch.

Figure-7 Rotary Switch for selecting combined function

FUNC. INPUT (White color) OUTPUT (Yellow Color)

1 Power Off Square wave output

Constant current: ±25 mA

2 DC, AC or DC+AC Voltage

measurements. Constant voltage: ±1.5V, ±15V

3 DC, AC or DC+AC mV measurements. Constant voltage: ±1.5V, ±15V

4 Resistance/ Continuity measurements Constant voltage: ±1.5V, ±15V

5 Diode/ Audible Continuity. Constant current: ±25 mA

Constant voltage: ±1.5V, ±15V

Constant current: ±25 mA

6 DC, AC or DC+AC mA measurements:

50mA and 500 mA Square wave output

Output and Input Terminals

Figure-8 Output/Input Terminals

OUTPUT terminals for Constant

Voltage, Constant Current and

Square wave Output functions

INPUT terminals for Voltage,

Current, Resistance, Diode/ Audible

Continuity measurements

HOW TO ENTER SETUP MODE

Press and hold the MODE button while turning the rotary switch to any ON position. The meter

will enter setup mode, these parameters will be saved in non-volatile memory even when the

meter is turned off.

Changing the parameters in setup mode:

1. Press “3(LEFT)” or “4(RIGHT)” button to select which menu item to be set.

2. Press “5(UP) or 6(DOWN)” button to change the parameter.

3. Push “OUTPUT” button momentarily to save your setting.

4. Push “SHIFT” button momentarily to exit setup mode.

The following table describes the setup menu items, the factory settings and user selectable

parameters.

Table-2 Descriptions for Setup Menu Items

Menu item Factory

Setting Selectable Parameters

Baud Rate 9600 2400, 4800, 9600 and 19200

Parity None Odd, even or none

Data bit 8 8 bits or 7 bits (Stop bit is always 1 bit)

ECHO OFF ON or OFF

Printer-Only OFF ON or OFF

Percentage scale 4-20mA 4-20mA and 0-20mA for % scale readout

Frequency 0.5Hz Set minimum measuring frequency, 0.5, 1 or 2 Hz.

Beeper 4800

The driving frequency can be set for

4800,2400,1200 or 600 Hz. “OFF” disables the

beeper

Temperature °C/°F

Four combinations can be set:

1. °C only

2. °C and °F

3. °F only

4. °F and °C

Refresh Hold OFF OFF means Data Hold, set 100~1000 variation

counts to enable refresh hold.

Auto power off 15 0~99 minutes, “0” disables auto power off.

Backlight 30

0~99 seconds, “0” disables turning off the backlight

automatically.

Notes: Push the “SHIFT” button for more than one second to enable temperature

option. The “ ” symbol will appear on the display.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

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