560XL • 567XL • 568XL • 570XL • 573XL • 577XL • 578XL • 580XL
Operation
570XL, 573XL, 577XL, and 578XL Series LED Sources
Removable
rubber cover
Wavelength/
low battery
indicators
ON/OFF
key
[ON/OFF] key: This key turns the instrument on and off.
[l] 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.
650 nm indicator: This indicator illuminates when the 650 nm LED is
active. It also blinks when the battery power is low. (650 nm LED in the
position of the 850 nm LED for the 573XL.)
[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.
One output interface (centered in the front panel) is used for the 577XL.
Wavelength
select key
Output
interfaces
Stand
(on back)
Modulated
mode indicator
Modulated
mode key
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