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6.1.5 “MAX/MIN” --- MAX / NIN / MAX-MIN / AVG Function select 

Press “MAX/MIN” button each time to shows values of Maximum, Minimum, (Max – Min) 
and average in turns. The corresponding annunciators MAX, MIN, MAX-MIN or AVG shows 
below the main data. Press and hold the button for 2 second to leave this function. 
In this mode, press “Hold” button to stop the recording of readings, press “HOLD” button 
again to resume recording. 

 

6.1.6 “Hi/Lo” --- Alarm On or Off and min DIN output 

When alarm function is active and the “ALM” will displayed at the at the upper-left corner. 
1. When measured value higher than upper limit, sound intermittent, and annunciator “

S

” in 

LCD. 

2. When measured value lower than lower limit, sound continuous, and annunciator “

T

” in 

LCD. 

3. Upper/Lower limit could be set by user (refer to 6.3.2 and 6.3.3). 
 
There is a Mini DIN accessory on the top of this meter (photocouple) that could output Hi/Lo 
signal (refer to figure 2). 

 

Connect a voltage about 5-30V between “Pin_5” and “Pin_6” (refer to figure 3) that can start 
the Hi/Lo function of Mini DIN when the alarm function is enable. 
Make “Pin_5” and “Pin_6” short then the Hi/Lo function of Mini DIN will be disable. 

 

1. Pin_1(+) and Pin_2(-) could be made short by external power (5V~30V) when the measured 

value higher or equal the upper limit, Pin_3 and Pin_4 will open at the same time(hi 
impedance). 

2. Pin_3(+) and Pin_4(-) could be made short by external power (5V~30V) when the measured 

value higher or equal the upper limit, Pin_1 and Pin_2 will open at the same time (hi 
impedance). 

3. Pin_1, Pin_2 and Pin_3, Pin_4 will open (hi impedance) when the measured value between 

upper/lower limit. 

4. The voltage /current limit of the mini DIN is 30V/5mA. 

 

PIN_5
PIN_3
PIN_1

PIN_6
PIN_4
PIN_2

 

 

 

(Fig-3) 

3. Names of Outer Parts 

 

Front Side: 

1. LCD 
2. Push Buttons 
3. Socket for Capacitor Sockets for Test Probes 
4. Rotary Switch 
5. Test Probes: A (Ampere), mA (milli Ampere), COM, V

Ω

 

 
 

 

 

Fig. 1 

 

1

4

5

3

2

Summary of Contents for 48R

Page 1: ...d to replace the battery less than 1 min to avoid the time of system was reset Fuse Replacement If no current measurements are possible check for a blown overload protection fuse There are two fuses F...

Page 2: ...atory snitch to any position to leave Data Read Mode 7 3 Clear Data in the Memory Turn the rotatory switch to the position of MEM then press S or W or T or X till the display shows CLR blinks Then pus...

Page 3: ...of the display 7 1 1 READ OUT THE DATA SAVE READ Select the menu at save read mode and then press SETUP button Press S or W or T or X to page up or page down the data which you want LOG READ Select t...

Page 4: ...sound two times 4 Press S or T to page up or page down the setup menu 6 3 6 APO min 1 minute 1 Press SETUP button to setup time of APO 2 Press W or X to select field 3 Press S or T to increase or decr...

Page 5: ...y information must be observed to insure maximum personal safety during the operation at this meter Warning To avoid electrical shock do not use this instrument when working voltages at the measuremen...

Page 6: ...ccasions of Auto Hold 1 Auto Hold will not work and H blink when the measurement value lower then 50 counts or OL 2 When the new Auto Hold value has produced and the value higher the last one than 50...

Page 7: ...Shift Mode and return to Normal Mode APO function will be disabled as follow 1 External power is used 2 RS 232 function is used 3 MAX MIN MAX MIN AVG function is used 4 Data logger function is used 6...

Page 8: ...nge XXX X A In this range the display shows 1 0 A per 1mV DC input from the V and COM jacks Press SELECT button again to enter 2nd range decimal point move to between 2nd and 3rd digits XX XX A displa...

Page 9: ...eter photocouple that could output Hi Lo signal refer to figure 2 Connect a voltage about 5 30V between Pin_5 and Pin_6 refer to figure 3 that can start the Hi Lo function of Mini DIN when the alarm f...

Page 10: ...are printed on the top of each push button in white color 6 1 1 Backlight 1 Press button to turn on and off the backlight of LCD 2 It will auto off by setting time of backlit 6 1 2 DC AC selection Wh...

Page 11: ...cimal point will change corresponding to the range selected by rotary switch 5 1 Voltage and Current Measurement Range Selection Select a proper range by turning the Rotary Switch to one of the Voltag...

Page 12: ...end of the meter and turn the Rotary Switch to one of the Ranges or Diode Range Note 1 When measuring high resistance such as at ranges of 2M and 20M due to the level of signal is very low and very se...

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