13
14
15
16
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In the auto range (Auto) mode, the meter selects the best range for the input detected. This allows you
to switch test points without having to reset the range.
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In the manual range mode you can select the range, this allaws you to override auto range and lock the
meter in a specific range.
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When the meter in auto range mode the “AUTO” sign will be appear on display screen.
(3) To enter or exit manual range mode ;
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Press RANGE button momentary the meter enters the manual range mode and “AUTO” turns off.
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Each press of RANGE momentary increments the range. When the highest range is reached, the
meter wraps to the lowest range.
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Press RANGE more than 2 seconds the meter returns to auto range mode and “AUTO” appear on
display screen .
3. After setting proceeding measurement.
a. If measuring above limited the secondary display “
” and primary display present value .
b. If measuring down limited ihe secondary display “
” and primary display present value .
c. If mcasuring about high and low, secondary display “
”
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Analog bar graph
The Function of bar graph is analog needle of meter but without the overload, and updates 40 times per
second because the graph responds 10 times faster than the digital display it is useful for making peak
and null adjustments and abserving rapidly changing inputs. The bar graph has 23 segments. The number
of lit segments is relative to the full-scale value of the selected range. The unit of the bar graph is 4000
counts/bar except when in the relative mode. The polarity indicated at left of the bar graph.
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Square wave output
The square wave output is a useful function is Iet user have free space for application. For instance,
PWM (Pulse Width Modulation) out, regulate voltage control, timer to control circuit, synchronous clock,
etc, this is a free-for-all application function.
Measurement ranges
A measurement range determines the highest vatue meter can measure. the meter functions have more
than one range.
(1) Being in the right measurement range is important :
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If the range is too high, the meter will not display the must accurate measurement; If the range is too
low, the meter will show “OL” on the display.
(2) Auto range and manual range ;
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The meter bas both auto range and manual range options :
How to operate
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DC Voltage measurement
The measurement of DCV has three modes : DCV / [DCV+ACV] / dBm.
1.
Set the rotary switch to “ V ” position.
2.
Press SELECT to select measurement mode.
3.
Connect the black test lead to “COM” terminal and the red test lead to “V
V
Hz” terminal.
4.
For auto range mode the meter at auto range, if you want some range press RANGE to obtain your
range.
5.
According to your need, can press REL
r
MAX/MIN and 2nd VIEW buttons obtain relevant
measurement .
6.
Touch the probes to the test points and reading display.
7.
Primary and secondary display as Table 5.
Table 5. primary and secondary display
Press
Secondary
SELECT
Primary
[ press 2nd VIEW ]
DCV
DCV
[DCV + ACV ]
ACV
ACV/Hz
dBm
dBm
Hz/ACV/DCV/DCV+ACV
Note : When enter to dBm measurement, the impedance is
600
V
, if you want change impedance, press RANGE to select
impedance. The impedance selectable is :
4/8/16/32/50/75/93/110/125/135/150/200/250/300/500/600/800/
900/1000/1200 of Ohms.
Figure 5. DCV measurement
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AC Voltage measurement
The measurement of AC voltage has three modes : ACV / [ACV+Hz] / dBm.
1.
Set the rotary switch to “ V ” position.
2.
Press SELECT to select measurement mode.
3.
Connect the black test lead to “COM” terminal and the red test lead to “V
V
Hz” terminal.
4.
For auto range mode the meter at auto range, if you want some range press RANGE to obtain your
range.
5.
According to your need, can press REL
r
MAX / MIN and 2nd VIEW buttons obtain relevant
measurement.
6.
Touch the probes to the test points and reading display.
7.
Primary and secondary display as Table 6.
Table 6. primary and secondary display
Press
Secondary
SELECT
Primary
[ press 2nd VIEW ]
ACV
ACV
[ACV + Hz ]
ACV
Hz/
%/
%/
ms/
ms
dBm
dBm
Hz/ACV
Note : When enter to dBm measurement, the impedance is
600
V
, if you want change impedance, press RANGE to select
impedance. The impedance selectable is :
4/8/16/32/50/75/93/110/125/135/150/200/250/300/500/600/800/
900/1000/1200 of Ohms.
Figure 6. ACV measurement