GTC CT8030 User Manual

CT8030

1. SAFE TY RULES

This meter is designed for indoor use at temperatures between 0°C to 40°C and

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altitudes up to 2,000m.

To ensure that the meter is used safely, follow all safety and operating instructions in

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this operation manual. If the meter is not used as described in this operation manual,
the safety features of this meter might be impaired.

Do not use the meter if the meter or test leads look damaged ,or if you suspect that

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the meter is not operating properly.

When using the instrument, keep your fi ngers behind the fi nger guards on the plastic

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casing and probes.

Disconnect the live test lead before disconnecting the common test lead.

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Make sure power is off before cutting, desoldering, or breaking the circuit wires. Small

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amounts of current can be dangerous.

Do not apply more than 1000 VDC or 750V AC rms between a terminal and ground.

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T o avoid electrical shock, use CAUTION when working above 60V DC or 25V AC rms.

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Such voltages pose a shock hazard.

Never make measurements with the battery cover off.

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To avoid electrical shock or damage to the meter, do not exceed the input limits.

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2. INTERNATIONAL SYMBOLS

Important information Dangerous Voltages

see manual Continuity
AC Ground

DC Double Insulation

3. TECHNICAL SPECIFICATIONS

3.1 General Specifi cations

Display: LCD, 4¾ digits/40000 Counts (99999 for Hz

function) + 4 Digits/9999 Counts dual display
with 42 segments analog bargraph.

Polarity: Automatic, (-) negative polarity indication

Zero adjustment: Automatic

Sample rates

3¾ Digits: 5 times per Sec.

4¾ Digits: 1.25 times per Sec.

43 Seg. bar graph: 128 times per Sec

Over range indication: “

Operating Temperature: 0 to 35°C, 0 to 80% RH

0 to 50°C, 0 to 70% RH

Power Source: 9-volt battery type NEDA 1604, IEC6F22

Battery life: Approx. 70 hours. (w/ alkaline batteries)

Safety: Designed to comply with EN61010-

E.M.C.: Meets EN55011 and EN582-1

Dimension: 7.32”x3.42”x1.39” or 186x87x35.5mm
without Holster

Weight: Approx. 13.8 Oz. or 390g (without Holster).

Accesories: User’s Manual, Test Leads, Back Probes,

OL” is displayed

1, UL3111-1, CSA C22.2 No.1010-1
and IEC1010-1 Installation category II,
Pollution degree 1

Alligator Clips, Protective Holster, Hard
Carriying Case, K-type Temperature Probe,
Inductive pick-up and 9V battery.

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3.2 Electrical Specifi cations

Accuracies are ±(% of reading + number of least signifi cant digits) at 23°C

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±5°C, less than 75% RH. For DC/AC current measurement, the maximum
current of 10 A is for 30 Sec. with 5 min. cool down between measurements.

Function Range Accuracy

40.00 mV 0.8%+6

400.0 mV,

DC Voltage

AC Voltage

DC Current

AC Current

Resistance

Diode Test

Frequency

Multiport

Fuel

Injection

Single

Port Fuel

Injector

Tachometer

Dwell

Temperature

4.000 mV,

40.00 V to

400.0 V

1000 V 0.1%+4

40.00 mV 1%+10

400.0 mV,

4.000 V,

40.00V,

400.0 V, 750V

40.00 mV 3.5%+10

400.0 mV,

4.000 V,

40.00V,

400.0 V, 750V

40.00 mV 4%+10

400.0 mV,

4.000 V,

40.00V,

400.0 V, 750V

4000 mA

10.00 A

4000 mA

10.00 A

4000 mA

10.00 A

4000 mA

10.00 A

40.00

400.0

4.000 k

40.00 k

400.00k

4.000 M 0.3%+2

40.00 M 1.5%+3

2.000 V - < 3.2 V Test Voltage 600 Vrms

99.999 Hz to

20.000 kHz

0.05 - 250 mS

0.0 - 100 %

0.05 - 250 mS 0.05mS+1

0.0 - 100 %

120-20000 RPM

60-10000 RPM RPM 2

0.0º - 360.0º 1.2º/krpm+1

0.0º - 100.0º 0.04º/krpm/cyl +2

-20.0º to

1000.0ºC

-4º to 1832ºF 0.2%+6ºF

0.1%+2

0.8%+4

2.5%+5

3.6%+8

1.2%+6

0.8%+4

1.2%+6

1.0%+3

2.5%+10

1.2%+3

3.5%+10

1.5%+5

0.5%+40

0.15%+4

0.15%+2

0.001%+4

0.04%/krpm +2

0.04%/krpm/cyl +2

2 RPM

02%+3ºC

Input

Impedance

10 M



30 pF

nominal



10 M

30 pF

nominal

(100pF

nominal in

40 mV and

400 mV

Ranges)

0.03 V/A Voltage Burden

0.03 V/A Voltage Burden

<1.3 V Test Voltage
(<3.3 V in 40

400

 range)

1, 2, 20 and 200 Vrms

Selectable threshold

0.05mS+1

K-Type Thermocouple

Probe

Remarks

50~60Hz

40 Hz to

1 kHz

1 kHz to

2 kHz

and

Selectable

+/- Slope,

and

Number of

Cylinders

RPM 4

1 to 12

Cyl.

Overload

Protection

600 Vrms

600 Vrms

Protected

Protected

600 Vrms

600 Vrms

600 Vrms

600 Vrms

600 Vrms

600 Vrms

Fuse

Fuse

Audible Continuity Tester

RPM

4

RPM

2

Audible threshold : between 10, and 60.

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Response time: 200μs.

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O

Sensor Tester

2

Application : For O2 Sensor dynamic test

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Main Display : Symbolic waveform display of O2 Sensor

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Mini display : Cross count per second parameter.

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Sweep Rate : 10 per second.

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Alternator tester

Application : For quick go / no go test on alternators

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Threshold : The display indicates "bad" and the

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Fault Code Detector

Application : For blink type fault code detection

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Display : The display indicates a symbolic pulse and

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Threshold : 4.5VDC with selectable positive or negative

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dynamic output.

A beep sound will alert the user on each
signifi cant cross count edge

beeper turns on when the measured
ripple voltage is greater than 0.45VAC.

the beeper turns on when the blink code
pulse is detected.

pulse trigger (by ±Trigger button).

DTC (Diagnostic Trouble Code) Decoder

Application : A replacement of the Impulse Counter Scan

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Tool as specified in the Mercedes-Benz
Diagnostic Trouble Code Reference Guide
to scan the DTC Code readout automatically
on the Mercedes-Benz car series.

4. OPERATION

4.1 Instrument Description

1- LCD Display: 4-3/4digit 40000 count 4 digits 9999 count dual display.

2-

3-

4-

5- : Pushbutton. Press momentarily to turn on the display

6- Rotary Switch: Turns the power ON and OFF and selects

7- COM Input Socket: Common (Ground Reference) Input

: Pushbutton, press momentarily to select trigger levels,
or press and hold for 1 second to toggle between positive and
negative trigger slopes.

: Pushbutton to select Auto/Manual ranging in most
functions, or number of cylinders in Dwell function.

: Pushbutton to select relative zero and relative
percentage change.

backlight, or press and hold for 1 second to recall stored data.

measuring functions.

connector for all functions except TACH function.

8- : Input Socket for all functions except Current and TACH

functions.

9- mA A/RPM

ground reference (

10- RPM

11-

12-

13- : Pushbutton. press momentarily to toggle between

14- : Pushbutton. press momentarily to toggle between

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: Pushbutton. Press momentarily to activate hold, or
press and hold for 1 second to store the data displayed for
later recall

: Pushbutton. press momentarily to select secondary

functions, or press and hold for 1 second to erase all stored
datas

40,000 and 4000 counts modes, or press and hold for 1
second to activate record function

and
second to activate Crest function

: Input Jack ( ) for current function, and

) input Jack for RPM function.

: INPUT JACK ( ) FOR RPM FUNCTION

in RPM function, or press and hold for 1

4.2 Display Description

2

4

15. : These annunciators indicate trigger level status.

16. : These annunciators indicate positive ( ) or negative
( ) Trigger Slope is selected.

17.

: Negative polarity symbol.

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annunciator indicates direct current (DC) is selected.

18.

annunciator indicates alternating current (AC) is selected.

4.3 Measurement Procedures

CAUTION: Maximum Input Voltage is 750Vrms,do not exceed

this rating to avoid personal injuries or damage to the
instrument. The FUNCTION switch should be set to
the range you want to test before the operation.

CAUTION: Always ensure that the correct terminals are used for

the type of measurement to be made. Avoid making
connections to “live” circuits whenever possible.When
making current measurements ensure that the circuit
is not “live” before opening it in order to connect the
test leads.

4.3.1 DC/AC Voltage Measurement

19. DATA : Main digital readings of data being measured.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29. DATA : Secondary display for Dual Display data.

30. kHz : These annunciators indicate the function being selected

31.

: This annunciator indicates Auto Power Off is enabled.

: This annunciator indicates Autoranging.

: Low Battery alert, replace the battery as soon as possible

to ensure accuracy.

: This annunciator indicates the Alternator tester function

is selected.

: This annunciator indicates data HOLD function is activated.

: This annunciator indicates the Record function is activated.

: This annunciator indicates the Crest function is activated.

: This annunciator indicates the Fault Code Detector

function is activated.

: This annunciators indicate MAX (Maximum), MIN
(Minimum), MAX-MIN (Maximum minus Minimum), or AVG
(Average) reading is being displayed.

and/or the appropriate measurement units.

: Analog bar graph with overload fl ag, polarity and scale.

Set rotary switch to position.

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Default at DC. Press SELECT button momentarily to select AC,

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and press again to select Hz if required.

Insert red ( ) test lead into jack and black ( ) test lead into

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COM input jack.

Connect test leads to voltage source and observe the digital

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display for the readout.

Set rotary switch to position for voltage application below 0.4V

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with similar operation procedures.

Refer (4-2) for enabling dual display RPM function.

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Hz Function: 4 trigger levels selectable through the LEVEL push

button for advanced applications in this function. Also refer to section

5.8 of this manuals for more details.

4.3.2 DUAL DISPLAY RPM Function

Set the meter to the corresponding primary function. See note

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below for function availability.

Press button to toggle to

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engine, or to

Insert output plug of inductive pick up with the positive (red) into

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RPM

Clamp the inductive pick up to a spark plug wire with the arrow

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sign facing the spark plug. Make sure that the pick up jaws are
completely closed.

Observe the secondary digital display for RPM readings.

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jack and the negative (black) into the RPM jack.

for 4-stroke engine.

for 2-stroke and DIS