OVA-50 User’s Manual
Shineway Technologies, Inc.
- 4 -
2.2.1 External Interfaces
1.
Optical Input
OVA-50 is available with FC connector (Interchangeable SC/ST).
2.
USB Power /Data Port
OVA-50 can be charged by external power adapter (5V DC, 750mA).
2.2.2 Keypad Operation
Power on/off
Toggle between calibrated wavelengths
Reset to minimum attenuation value
Short press to toggle between working modes:
Absolute attenuation, Relative attenuation, Program & Output power
control;
Long press to enable/disable Auto Off
Change attenuation value
Toggle between attenuation stepping;
Shift digit positions
Enter functional interface; Confirm
Turn backlight on/off; Long press to adjust contrast
