7
•
Optimal power
It is fixed power, defined by factory measurement for CENELEC 42 channels signals and intermodulation distortion level, according technical specification.
•
Attenuator
RF attenuator can be adjusted 0...15 dB with 0.5 dB step.
•
Equalizer
RF equalizer level can be adjusted in the range of 0..10 dB, step 0.5 dB
Note
:
Attenuator
and
Equalizer
values may be changed step by step using Up/Down buttons at right side of parameter window or entered directly
from keyboard. Take in mind that some browsers (e.g. IE) don’t support Up/Down control element. In this case the appropriate value should be entered
from keyboard.
•
Gain control
The transmitter can be operated in non-AGC (“Manual”) as well as two different AGC modes (“Auto” or “Auto Optimal”).
“Manual” – AGC is switched off.
“Auto” - Is used to set automatic RF level control for constant load to the laser.
The operating AGC level is set by the user when the button “Apply settings” is pressed. After that, RF level instability is compensated automatically by
the internal attenuator. If attenuator can’t compensate RF level drift, diagnostic error message “AGC out of range” is displayed.
Auto Optimal - The operating AGC level is equated to optimal power, defined by factory measurement.
Note
: Auto (Auto Optimal) AGC mode should be changed through the “Manual” mode.
•
Freq Band
Bandwidth can be selected 47-862 MHz or 47-1002 MHz.
Transmitter Status
Status page (Figure 12) shows actual status of the transmitter using error/warning descriptions.
Make sure that the transmitter is not indicating any error or warning.
Figure 12. Transmitter status page
•
Laser current
Displays the laser diode current.
•
TEC curent
Displays the current of Thermo Electric Cooler (TEC).
•
Bus voltage
Displays supply voltage of device.
If the supply voltage is out of range 12± 1 V, then error message “Supply bus voltage out of range” is displayed.
•
Consumption
Displays current consumption of transmitter.
•
Temperature
Indicates the internal temperature of the device. If the temperature inside the module achieves the maximum level, the error message “Overheat” is
displayed.
In case the transmitter data bus is connected to an external power supply UP412, additional information about power supply parameters is displayed.
External supply 1 UP412:
•
Voltage
Displays the output voltage of power supply No1;
•
Current
Displays the current consumption of power supply No1;
•
Temperature
Displays the temperature inside the power supply No1.
