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9118A
Users Manual
74
Accuracy Adjustment
To do an accuracy adjustment:
1. Calculate the new TEMP
n
parameter with:
Temp
n
(new) = Temp
n
(old) - Accuracy
2. Put the Temp
n
(new) value into the Product through
the front panel or RS-232 port. Table 16 is a list of
temperature setpoints and the RS-232 command and
front-panel name for the TEMP parameters.
Table 16. Accuracy Parameter for Isothermal Block
Setpoint
(
°
C)
Parameter
RS-232 Command
Front Panel
300 SOUR:SENS:CAL:PAR1
TEMP
(300)
700 SOUR:SENS:CAL:PAR2
TEMP
(700)
1000 SOUR:SENS:CAL:PAR3
TEMP
(1000)
1200 SOUR:SENS:CAL:PAR4
TEMP
(1200)
3. After you put in the TEMP value, let the Product soak
for 60 minutes.
4. Do steps 1 through 6 of the Accuracy Test.
After the accuracy is verified or adjusted, it is
recommended that you do the axial uniformity verification
and adjustment that follows.
Axial Uniformity
The steps that follow make up the axial uniformity test and
the formulae to calculate the SKEW and ZONE parameter
values. The new values are put into the Product to correct
for axial temperature gradients.
Note
The axial uniformity test must be done before the
axial uniformity adjustment.
1. Respectively, move TC2 to one of the positions shown
in Table 17. TC1 is always fixed at the position 0 mm
as a reference in the period of moving TC2 at different
locations.
2. Let TC2 soak for a minimum of 5 minutes at this
position.
3. Record the temperature for TC1 and TC2 in below
Table 17.