19
2. Press ENTER when AUTO CAL is displayed. The display message area will
display “ONE MOMENT”, followed by a buzzer sound indicating that AUTO
CAL is complete.
NOTE:
Although at Power up, an AUTOCAL is performed, the above method is
necessary for proper calibration when the 2835-C is used with voltage sources.
Executing AUTO CAL with Low Power (Photodiode) or Energy
detectors:
Simply press ENTER when AUTO CAL is displayed. The display message area
will display “ONE MOMENT”, followed by a buzzer sound indicating that
AUTO CAL is complete. Low Power and Energy detectors do not have to be
connected to the 2835-C or removed from the radiation source to effectively
execute AUTO CAL.
2.4.5
Attenuator
The Attenuator selects the responsivity value, R
λ
, to be the value for the
detector alone or the value for the detector-with-attenuator. When ATTN is
ON the ATTN annunciator is lit and the responsivity of the detector-with-
attenuator is used. When ATTN is OFF, the annunciator is off and the detector-
alone responsivity is used. If the detector does not have an attentuator, or if
USR CAL is on (Section 2.4.6) the ATTN setting has no effect.
2.4.6
User Calibration
The Model 2835-C allows one to create a detector responsivity which over-
rides the responsivities obtained from the detector’s calibration module. This
allows one to account for the effects of additional optics and filters in the
measurement path. When USR CAL is on, the USR CAL annunciator is lit and
the meter adopts the responsivity value displayed by the editable USR RESP
value. Use the PRESENT RESP function to display the current calibration
module responsivity.
The USR RESP units are the same as the PRESENT RESP units. Table 11 lists
the possible user calibration operations.
Table 11 – User Calibration Operations
Menu Operation
Keypad Commands
Associated Remote Commands
USR CALIB
ON, OFF
Edit USR CALIB
USRCAL_n, USRCAL_n?
ON, OFF
USR RESP
Edit
d.dddE
±
dd
A/W* USRRESP_n, USERRESP_n?
PRESENT RESP
ENTER to view
RESP_n?
d.dddE
±
dd
A/W*
*Units of A/W, V/W or V/J may be displayed. These units are not editable.
NOTE
n in a remote command stands for A (channel A) or B (channel B).
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
