Newport 1825-C, Operator'S Manual

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2.3.3 AVERAGE
This front panel knob adjusts the PULSE/P-P signal averaging of the Model
1825-C’s display and analog output between off and maximum averaging. Use
this knob to slow down the response of the display when observing noisy
signals. A soft detent indicates the signal averaging “off” position. Averaging
only works in INTEGRATE and PULSE/P-P modes.
2.3.4 MODE
The front panel MODE knob sets the method of signal acquisition that the
Model 1825-C will use with a given detector. Not every mode can be used with
every detector. Table 3, below, indicates which modes are compatible with
the various Newport detector types.
Table 3 — MODE Switch Position and Detector Compatibility
MODE Position Compatible Detectors Comment
CW Low-Power, High-Power Measures average optical
power.
INTEG Low-Power, High-Power Measures energy resulting
from integrated power.
P-P
†
Low-Power Measures peak-to-peak
optical power.
PULSE
†
Energy Measures pulse energy.
†
While P-P and PULSE are the same position on the MODE switch, the meter’s
operation will differ due to the settings of the SETUP dip switches for the
different detector types. See Section 2.3.6.
2.3.5 CAL Slide Switch
The rear panel CAL slide switch performs the functions described in the table
below:
Table 4 — CAL Slide Switch Functions
Switch Position Function
CAL Display the Calibration Factor mantissa.
NORMAL, BEEP OFF Take readings normally.
NORMAL, BEEP ON Take readings normally but beep with each
pulse triggering. (INTEGRATE & PULSE/P-P
modes only)