5-8
TOS9213S/ TOS9213AS
Setting the upper reference (UPPER)
•
If the
u
pper reference is set to a
b
o
v
e 2.5 mA, the protecti
v
e circ
u
it may
b
e
acti
v
ated. To a
v
oid this, set the o
u
tp
u
t time to 1 min
u
te or less and pro
v
ide
a pa
u
se longer than the test time.
The upper reference can be set to 1 µA through 5.50 mA (at a resolution of 0.01 mA
for the 1.00 mA to 5.50 mA range, and 1 µA for the 1 µA to 999 µA range).
Once a current exceeding the upper reference is detected, the test ends with a FAIL
judgement.
If the cursor is at the upper reference, the rotary knob can be used to make settings.
1.
If the
u
pper reference is not displayed, press the F3 key (UPPER) to
display it (
w
hile the
u
pper reference is displayed, the c
u
rsor can
b
e
mo
v
ed
u
sing the
keys).
2.
Using the
keys, mo
v
e the c
u
rsor to the target digit.
3.
Using the rotary kno
b
, set the
u
pper reference.
• With the lower judgement function on, if the upper reference is set at or below the
lower reference, “READY” disappears and “UP<=LOW” flashes at the top right
of the LCD to indicate that testing cannot be performed (the lower reference is
factory-set to 0.20 mA). Lower the lower reference, raise the upper reference, or
turn off the lower judgement function.
• When settings are being made, if the test voltage multiplied by the upper reference
exceeds 55 W, “READY” disappears and “O
V
ER 55 W” flashes at the top right of
the LCD to indicate that testing cannot be performed. In such a case, lower the test
voltage or the upper reference.
CAUTION
VOLT LOWER UPPER
TIMER
1.00
k V
5.00
mA
3.0
s
DCW1
DCW1
LOWER
OFF
TIMER
OFF
READY
UPPER
−
F1 F2 F3 F4 F5
SHIFT
NOTE
