Tunable Semiconductor Laser TSL- 550
6-9
External modulation setting cannot be changed to “Ext.”, when coherence
control is ON. Please check coherence setting is set to OFF, before using
external modulation. (Refer to “6-2Coherence Control”)
Analog Input LF Mod. RF Mod.
Low-frequency modulation signal input
Specications
Modulation bandwidth: DC to 400kHz
Input level: 0 to –2V
Modulation depth: >50%/V (Typ.)
Input impedance: 4.7 kΩ
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How to cancel
1. Remove the external modulation signal.
Inside the cover at the bottom of the front panel.
2. Set the source to Disable . “Ext. Mod” turns off on the screen.
5. Input the modulation signal into the BNC connector labeled “LF Mod.” inside the
cover at the bottom of the front panel.
Never apply voltage out of the input level range. Doing so may damage the device.
CAUTION
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