Operation
570XL Series Dual-Wavelength LED Sources
Removable
rubber cover
Wavelength/
low battery
indicators
ON/OFF
key
[ON/OFF] key: This key turns the instrument on and off.
[λ] key: This key determines which LED is active.
850 nm indicator: This indicator illuminates when the 850 nm LED is
active. It blinks when the battery power is low.
1300 nm indicator: This indicator illuminates when the 1300 nm LED
is active. It also blinks when the battery power is low.
[MOD] key: This key toggles the light output between the
continuous wave (CW) and modulated modes.
MOD indicator: This indicator illuminates when the unit is in
modulated mode.
Frequency select: This switch, located inside the battery compart-
ment, sets the modulation frequency. See "Setting the Source
Modulation Frequency" section.
Output interfaces: Light output is emitted from these interfaces.
560XL • 570XL • 580XL
Wavelength
select key
Output
interfaces
Stand
(on back)
Modulated
mode indicator
Modulated
mode key
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