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381270 v1.2  04/02 

13

HZ FREQUENCY MEASUREMENTS

 

1. Press the 

HZ

 key in the ACV, DCV, mV, or Amp function to change to the frequency 

display. The frequency related soft keys will appear on the display. 

2. Frequency display soft-keys 

F1 “TRIG” 

trigger level 

a)  The Trigger Level allows adjustment of the trigger level from 0 to 95% of the 

peak of the measured signal. 

b) Press 

F1

 to change the polarity of the trigger. 

c) Press 

F2

 or 

F3

 to adjust the % trigger level 

d) Press 

F4

 to exit the trigger level menu. 

F2 “DUTY” 

duty ratio

 

a)  The Duty function changes the display 

from frequency to duty ratio. 

b) Press 

F2

 to enter the duty function. The 

display will change to % if a signal is 
present. 

c) 

In the duty function, “

DUTY

” will blink. 

d)  

Press 

F2

 to exit the mode. 

F3 “   t”

 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 width function,   t will blink. 

d)  

Press 

F3

 to exit the mode. 

F4

 

“   T”

 period 

a)  The period function changes the display from frequency to period. 
b) Press 

F4

 to enter the period function. The display will change to mS if a 

signal is present. 

c) 

In the period function, "  T" will blink. 

d) Press 

F4

 to exit the mode. 

MIN/MAX DISPLAY 

1.  Press the “

MIN/MAX

” key to enter this function. 

2.  The display will indicate the maximum value, the 

average value, and the minimum value since the 
mode was initiated and the relative time for each 
value is displayed next to the value. 

3.  The time format is MIN:SEC (00:00). 
4. Press 

F1

 to reset the time and begin recording a 

new series. 

5. Press 

F3

 to pause the recording. 

6. Press 

F2

 to resume recording after 

F3

 is pressed. 

 

 

 

TRIG 

     t

    T

DUTY

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...

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