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3.4.4 Alarm Menu
The displayed alarm content
RF IN Status
Laser Bias
Laser TEC
Output Power Status
-5V Status
+5V Status
+12V Status
-12V Status
+24V Status
Laser
CSO Initialization failed
Power invalid
3.4.5 AGC Mode
This mode is the recommended mode and also the standard operation.
The optical transmitter will automatically adjust to the optimal gain while the input
level is in the working range (see the technical data sheet). And the specified OMI
(rms) modulation index will be automatic gain control.
3.4.6 MGC Mode
Special users, who need to adjust system CNR/CSO/CTB performance indexes to
satisfy the specified requirements, can use this mode. The amplification gain
attenuation range 0-15dB.
(Not recommend).
3.4.7 Frequency Adjust ITU in DWDM
To help DWDM applications, it can adjust optical wavelength. The adjustable range is
±100GHz, 50GHz stepping. The button on the front panel or the Ethernet interface
will complete the adjustment.
λ=c/f, c is the speed of light. It is the constant value.
c=299792458m/s,
f is the frequency, its unit is Hz; eg frequency 193400GHZ, the
corresponding wavelength is 1550.12nm.
In the 1545-1560nm band, the frequency distance and the wavelength distance is very
similar to linear relationship.
50GHz frequency distance reflects to wavelength is very approximate to 0.4nm width;
Website: www.baudcom.com.cn Tel：+86-21-37709251 Email: info@baudcom.com.cn
1550nm external modulated optical transmitter operating manual
HIGH（LOW）
HIGH（LOW）
HIGH
HIGH（LOW）
HIGH（LOW）
HIGH（LOW）
HIGH（LOW）
HIGH（LOW）
HIGH（LOW）
OFF
LEFT（RIGHT ）
- 12 -
Comment
The RF input signal is high (low)
The laser bias current is high (low)
The laser cooling current is high
The output optical power is high (low)
The -5V voltage is high (low)
The +5V voltage is high (low)
The +12V voltage is high (low)
The -12V voltage is high (low)
The +24V voltage is high (low)
The laser is off
The CSO initialization is failed
The left (right) power is invalid
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Troubleshooting
