A&D GR Series GR-300 - Manual (Page 25)

Calibration Test
This function tests the balance for the accuracy using an external weight.
A weight which is used for the calibration test is called "the target weight".
The weight which you have is called "the external weight".
Operation
Step 1 Connect the AC adapter and warm up the balance
for at least one hour with nothing on the pan.
Step 2 Press and hold the CAL key until displaying
and then release the key.
LI U L
Press and hold the key
n
u
Step 3 The balance displays
□ If you want to change the target weight value,
proceed to step 4.
□ If you use the stored target weight value in the
balance, proceed to step 5.
Step 4 Press the j RANGE key and adjust the calibration
weight value using the following keys.
RE-ZERO [ key
RANGE key
PRINT key
CAL]key
The key to set the value of the
digit selected.
Thekeytoselectthedigittochange
value.
The key to store a new weight
value and return to step 3.
The key to cancel this change
and return to step 3.
Product Usable weight Adjustable range
GR-120 100g, 50g
GR-200 200g, 100g -1-15.9 mg ~ -15.0 mg
GR-300 200g, 300g
GR-202 200g, 100g
Note Digits cyclically change using the , RE-ZERO | key.
ex. 0mg^-h15mg-^-15mg-^0mg
Step 5 Confirm that there is nothing on the pan and press
the PRINT key. The balance measures the zero-
point and displays it. Prevent vibration and drafts
from affecting the balance.
7. Calibration Page 24
ciuc
-Release the key
,Viod
ex. target weight
value = 200.0017g
Initial target weight
value is 200.0000g
at GR-200.
r r n
L L LI
o rinnnn
u.uuuu g
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