Front Panel Familiarization; Power On/Off; Gpib Control; Mode Control - ILX Lightwave FPM-8200 User Manual

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C H A P T E R

Front Panel Familiarization

This section describes the front panel controls.

Power On/Off

POWER
The POWER switch applies power to the FPM-8200 and starts the power-up
sequence described in Chapter 1 (see Power-Up Sequence on page 2).

GPIB Control

GPIB
The GPIB section is located next to the Power switch on the left side of the front
REMOTE
panel. The REMOTE light emmitting diode (LED) illuminates, indicating the FPM-
LOCAL/ADR
8200 is under remote GPIB control. A flashing REMOTE LED indicates the GPIB
controller has put the FPM-8200 in "Local Lockout mode" with the LLO command;
in this mode the front panel is completely disabled, including the LOCAL/ADR
switch below it.
For more information on low level interface commands such as LLO, refer to the
IEEE488.1 specification.
The LOCAL/ADR button has two functions:
• In REMOTE mode (LED indicator steadily illuminated), press LOCAL/ADR to return control
to the front panel ("local control").
• In LOCAL mode (indicator OFF), press LOCAL/ADR to display the GPIB address for three
seconds. While the GPIB address is displayed, you can change it to any of 31 addresses
from 00 to 30 by pressing the UP and DOWN switches in the PARAMETER SETUP section
of the front panel. See Parameter Setup Control on page 7..

Mode Control

MODE
The MODE section sets the power display mode.
dBm
W
• Press dBm/W to select logarithmic (dBm) or linear (mW, µW, nW) units.
SET
REF
• Press dB to display power changes in dB relative to a reference value.
dB
• Press dBm/W and dB together to set a reference value to the most recent power
measurement.
Press dB and RECALL (see Parameter Setup Control on page 7) together to
display the stored reference value for thee seconds.
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 FPM-8200
FR O N T PA N E L O P E R A T I O N
The FPM-8200 Front Panel