background image

381270 v1.2  04/02 

12

AC AND DC CURRENT MEASUREMENTS. 

1. Turn the rotary switch to the 

AC/DC A

 position. 

2. Press the 

HELP

 key and then the “

F4

” key to display 

procedures, cautions and connection diagrams 
regarding current measurements 

3. Maximum allowed current is 20 Amps. Use a current 

clamp for larger currents. 

4. Press F3 to change from DC to AC current. 
5. Press F4 to change to dB. 

RPM MEASUREMENTS. 

1. Turn the rotary switch to the RPM position. 
2. Press the 

HELP

 key and then the “

F4

” key to display 

procedures, cautions and connection diagrams 
regarding rpm measurements 

3. Connect the optional inductive pickup as described. 
4. Press F1 for 2 cycle engines and F2 for 4 cycle 

engines.. 

SIG.OUT 

1. Turn the rotary switch to the SIG.OUT position. 
2. Press the 

HELP

 key and then the “

F4

” key to display 

procedures, cautions and connection diagrams 
regarding the SIG.OUT function. 

3. Press F1 to increase the frequency and F2 to 

decrease the frequency. 

4. Press F3 to initiate the output. Press again to disable 

the output. 

AUX  

The AUX selection allows direct display of 

o

C, 

o

F, %RH, psi or High current in the 

correct units when the meter is used with an optional adaptor. 
1. Turn the rotary switch to the AUX position. 
2. Press the 

HELP

 key and then the 

F4

 key to display procedures, cautions and 

connection diagrams regarding the AUX function. 

3. Press F1 to F4 to select the units that match the adaptor being used 

INSTALL 

The Install function provides a means to set three default 
Power-on conditions (dB reference, key beeper, auto-
shutoff) and also enable self-test. 
1. Turn the rotary switch to the 

INSTALL

 position. 

2. Press the F1 key to select one of the three features. 
3. Press F2 to enable or disable the feature or to set the 

dB reference level. 

4. Press F3 to save the changes. 
5. Press F4 to run the self test. 

 

 

 

 

Содержание MultiScope 381270

Страница 1: ...Owner s Manual Model 381270 381275 MultiScopeTM CAUTION Read understand and follow all Safety Rules and Operating Instructions in this manual before using this product...

Страница 2: ...11 Resistance Conductance and Continuity 11 Capacitance and Diode Measurements 11 mA and uA Current Measurements 11 Current Measurements 12 RPM Measurements 12 Signal Out 12 AUX 12 Install 12 Frequen...

Страница 3: ...uit is non powered Ohms can not be measured if there is voltage in the circuit being measured When using the inductive pick up lead be sure you keep the inductive clamp away from adjoining high tensio...

Страница 4: ...otentially hazardous situation which if not avoided may result in minor or moderate injury or damage to the product or other property This symbol advises the user that the terminal s so marked must no...

Страница 5: ...erface Baud Rate 9600 Data bit 8 bit Stop bit 1 bit Parity none Min Max Avg Records minimum average and maximum value Hold Captures displayed reading Storage 15 pages text or graphic Dimensions weight...

Страница 6: ...3 0 rdg 5dgt Duty Cycle 1 to 100 0 1 3 0 rdg 5dgt 10Hz 100Hz 1Hz 100Hz 1000Hz 10Hz Signal Out 1kHz 20kHz 1kHz 1 2 5 digits OVERLOAD PROTECTION Input Overload Protection Function Maximum Input V DC V A...

Страница 7: ...30 minutes of inactivity MODE Toggle between the multimeter text mode and the oscilloscope graphics mode The graphics mode functions in the V A and mV modes HOLD Freezes the reading on the display Pre...

Страница 8: ...iemens Conductance o C Degrees Centigrade o F Degrees Fahrenheit OUT Signal out PAUSE Pause in MIN MAX mode P H Peak Hold Psi kPa Pressure RANGE manual ranging REL Relative RESET Reset RMS True RMS RP...

Страница 9: ...e pattern in the autoranging mode or can be set manually using the F1 and arrow keys The volts division is determined by the range selected and cannot be varied SOFT KEYS AND SUB MENUS Function keys F...

Страница 10: ...the next available range will be set 3 To return to AUTO range hold the RANGE key for 4 seconds DATA HOLD The meter will freeze the reading in the display when the HOLD key is pressed H will apear in...

Страница 11: ...rement is less than 40 5 Press F3 to enter the conductance nS mode Conductance 1 and is displayed in nS nano Siemans from 0025nS to 0999nS 1 to 40M CAPACITANCE AND DIODE MEASUREMENTS 1 Turn the rotary...

Страница 12: ...ures cautions and connection diagrams regarding the SIG OUT function 3 Press F1 to increase the frequency and F2 to decrease the frequency 4 Press F3 to initiate the output Press again to disable the...

Страница 13: ...pulsewidth a The pulse width function changes the display from frequency to pulse width b Press F3 to enter the pulse width function The display will change to mS if a signal is present c In the pulse...

Страница 14: ...available range will be set 3 To return to AUTO range hold the RANGE key for 4 seconds RELATIVE text soft key The relative mode displays of the difference between a reference value and the measured v...

Страница 15: ...ss F3 to trigger a single measurement 2 Press the sub menu F2 or F3 arrow keys to change the time division 3 Press the sub menu F1 key to trigger a new measurement 4 Press F4 EXIT to return to the gra...

Страница 16: ...ith the associated time of measurement 7 Select Run Stop to stop the data recording 8 Select Graph Bar or Line to plot the data in graphical format 9 Select File Save to save the recorded data 10 Sele...

Страница 17: ...ift the tilt stand and remove the two screws 2 Lift the two battery covers up to remove them 3 Replace the six batteries Observe the proper polarity as indicated in the compartment MULTISCOPE BATTERY...

Страница 18: ...40 for authorization A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to p...

Отзывы: