VOLTCRAFT VC920, VC940, VC960 Calibration Instruction
VC920/940/960 Calibration Instruction ( )
Made by |
|
Doc. No |
|
PDD - WI -121-(01) |
|
|
Checked by |
|
Version |
0 |
Page |
1 of 1 |
|
Approved by |
|
Modified Verson |
|
|
|
|
1.Inspection Items
(a)Diode, Continuity Buzzer and all Ohm ranges
(b)RS232 (SEND), LIGHT, STORE, SETUP and RECALL functions
2.Calibrating Instrument
(a)Standard Diode IN4007, Resistance 0Ω, 10Ω, 50V. Each 1 pc
(b)Standard 35 series Resistor Box
3.Inspecting Procedures
|
Turn the rotary switch to Ω, |
range. Then put the resistor or diode to VΩHz |
|
|
jack and perform the following test |
|
|
|
|||||||||||
|
COM |
|
|
|
|||||||||||||||
|
Steps |
|
Functions |
|
Display when no |
|
Input Value |
|
Value Range |
|
|
|
Boucing |
|
Accuracy |
|
Remark(s) |
|
|
|
|
|
|
|
|
|
|
Component |
|
|
|||||||||
|
|
|
input signal |
|
|
|
|
|
Digits |
adjusting |
|
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
1 |
|
|
|
.OL |
|
|
Forward Voltage |
|
0.4 1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Drop |
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2 |
|
Buzzer |
|
O.L |
|
|
≤49Ω |
|
Buzzer Beeps |
|
|
|
|
|
|
|
|
|
|
|
|
Buzzer |
|
O.L |
|
|
≥52Ω |
|
Buzzer not Beeps |
|
|
|
|
|
|
|
|
|
|
3 |
|
400Ω |
|
O.L |
|
|
Short Circuit |
|
0.00 0.01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Use a short cable |
|
|||
|
|
|
|
|
350.0Ω |
|
(347.9 352.0)+R |
6 |
|
±(0.8%+10) |
|
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
inpt the resistance. |
|
|
4 |
|
4KΩ |
|
. OL |
|
|
3.500KΩ |
|
3.487 3.513 |
|
|
|
|
|
|
|
Press "RANGE" |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
button for entering |
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 |
|
40KΩ |
|
.OL |
|
|
35.00KΩ |
|
34.87 35.13 |
|
|
|
4 |
|
|
|
the calibrating |
|
|
|
|
|
|
|
|
|
|
|
±(0.5%+10) |
|
mode. Then input |
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
200Ω2KΩ200 |
|
|
|
6 |
|
400KΩ |
|
O.L |
|
|
350.0KΩ |
|
348.7 351.3 |
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
KΩ2MΩ20MΩ |
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
and adjust to the |
|
|
7 |
|
4MΩ |
|
. OL |
|
|
3.500MΩ |
|
3.487 3.513 |
|
|
|
8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
correct value |
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
8 |
|
40MΩ |
|
.OL |
|
|
35.00MΩ |
|
34.62 35.38 |
|
|
|
14 |
|
±(1.5%+20) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Remark(s) : 1. The test readings hereinbefore retrench specification as a rate of 70%, When the specification can not reach test requirement, inform the Engineers to broaden the relevant specification, then carry out the specification as clients required.
2.When input terminal is short, display will be R
3.Press "EXIT' and blue button together to enter the calibrating mode
4.For checking the Store features :
The first time press "STORE" button, left secondary display shows the current measurement reading, press to clear the store value which start from 0. Press "STORE" again, the left secondary display shows the storing
time interval in seconds. Press +/- can change it. Then press "STORE" again will start auto saving the records (VC920 can store up to 10 records, VC960 can store up to 10000records). Press "EXIT" button to stop recording.
5. RECALL and RS232 checking :
Connect the cable, press "STORE" button for around 1sec. Meter will enter the Recall mode. The left secondary display shows the existing record no. The right secondary dispay shows the total no. of records. Press button will start the auto SEND function. All the stored data will be copied to the computer via RS232. The SEND function will automatically stop when all data are transferred. Alternatively, press "EXIT" button will stop the function.
6. Backlight checking :
Press and hold "EXIT" button, it will turn on the 1st level backlight (The default setting time is OFF). Now press same button once will turn on the second level backlight. Now press "EXIT" again will switch off the backlight.
7. MAX/MIN checking :
Press "MAX/MIN" button to enter the recording mode. The left secondary display will show the maximum value and symbol. The right secondary display will show the minimum value and symbols. The main display will show the existing measuring value. Press "EXIT" to stop.
8 SETUP checking :
Press and hold "RANGE" to enter the setup mode. Press the same button can enter a) High, Low alarm (or OFF) mode; b) time interval for auto power off; c) buzzer beeps; d) time for backlight off; e) analogue bargraphic setting Press +/- can adjust the value. Press "EXIT" button will end the setup.
4. Notes
. Be sure display for no input signal become steady before input stated value.
. Pack the Meter after input value became steady, and bouncing digits is less than bouncing values.
. Calibrate the Meter on/in bubble bags, and put defects or eligible meters into different plastic box orderly in bubble bags.. Before the calibrator gives input to the Meter, make sure a proper function has been selected, forbid output first or change
function in output state.
. Inspect the LCD display when open the Meter, there should no extra stroke, shadow, leakage, scratch, damage or dirt.. Turn the Rotary Switch to OFF position or take out the battery.
1 ,
2 , ≤
3 ( ) ,
4 ,
5 LCD
6 OFF
: ■ □ □
( ) |
DCC003 5 |
VC920/940/960 Calibration Instruction ( )
Made by |
|
Doc. No |
|
PDD - WI - 12102 |
|
||
Checked by |
|
Version |
0 |
|
Pages |
1 of 1 |
|
Approved by |
|
Modified Verson |
|
|
|
|
|
1.Inspection Items
All DCV ranges
2.Calibrating Instrument
(1)NJ19 DC Standard Voltage Current Source
(2)Non-induction Flat Screwdriver
3.Inspecting Procedures
Turn rotary switch to mVHz range. Input the testing voltge to VΩHz |
COM terminal and perform the following checking. |
||||||||
Steps |
Functions |
Display when no |
Input Value |
|
Value Range |
Bouncing |
Comonent |
Accuracy |
Remark(s) |
input signal |
|
Digits |
Adjusting |
||||||
|
|
|
|
|
|
|
|
|
|
1 |
400mV |
OL |
Short Circuit |
|
±0.0001 |
3 |
|
±(0.025%+8) |
Press "RANGE" |
|
|
|
|
||||||
|
|
189.98 190.02 |
|
||||||
|
|
|
190mV |
|
|
VR2 |
|
button for |
|
|
|
|
|
|
|
|
|
|
entering the |
|
4V |
0.0000V |
1.9V |
|
|
|
|
|
|
2 |
|
1.8991 1.9009 |
|
|
|
calibrating |
|||
|
|
|
|
|
|
|
|
|
mode. Then |
|
40V |
00.000 |
19V |
|
18.991 19.009 |
|
|
|
|
4 |
|
|
|
|
input |
||||
|
|
|
|
|
|
|
|
|
2V 20V 200V |
5 |
400V |
000.00 |
190V |
|
189.91 190.09 |
5 |
|
|
|
|
|
±(0.05%+5) |
700V then |
||||||
|
|
|
|
|
|
|
|
|
press“HOLD” |
|
|
|
1000V |
|
999.4 1000.6 |
|
|
|
|
6 |
1000V |
0000.0 |
|
|
|
|
button for |
||
|
|
|
|
|
|
adjusting |
|||
(-)1000V |
|
(-999.4 -1000.6) |
|
|
|
||||
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
Remark(s) : 1. The test readings hereinbefore retrench specification as a rate of 60%, When the specification can not reach test requirement, inform the Engineers to broaden the relevant specification, then carry out the specification as clients required.
2.Press "EXIT' and blue button together to enter the calibrating mode
3.Auto power off was default as 10 minutes. Either turn the rotary switch or press the blue button to switch it on.
4.After pass DCV 1000V test, press "HOLD", LCD will display "HOLD" symbol. Buzzer have beep sound. After stopping input 1000V signal, LCD display remain unchange. Press "EXIT to end the setup.
4. Notes
. Be sure display for no input signal become steady before input stated value.
. Pack the Meter after input value became steady, and bouncing digits is less than bouncing values.
. Calibrate the Meter on/in bubble bags, and put defects or eligible meters into different plastic box orderly in bubble bags.. Before the calibrator gives input to the Meter, make sure a proper function has been selected, forbid output first or change
function in output state.
. Inspect the LCD display when open the Meter, there should no extra stroke, shadow, leakage, scratch, damage or dirt.. Turn the Rotary Switch to OFF position or take out the battery.
Loading...