Axcera 79XITS-7045 Benutzerhandbuch
WaveCom Electronics Inc
MA4040D Manual; MAN1L0901 REV 13(0104)
Approved: D.P.
15
ALARM LED
A constant Alarm LED on the MA4011D indicates a critical alarm condition. Detailed alarm information is available
by selecting the module from the front panel and observing the status and error codes on the LCD display.
A constant Alarm LED on the MA4011D indicates a critical alarm condition. Detailed alarm information is available
by selecting the module from the front panel and observing the status and error codes on the LCD display.
MODULE SELECT LED
When the green MODULE SELECT indicator is illuminated, it indicates that the corresponding module has been
selected from the front panel or via the remote control interface.
When the green MODULE SELECT indicator is illuminated, it indicates that the corresponding module has been
selected from the front panel or via the remote control interface.
AUX LED
This LED is reserved for future use.
This LED is reserved for future use.
3.2 Front Panel Operating Modes
3.2.1 MA4040D Upconverter Modes
FREQUENCY
When this mode is selected, the display will read : Frq XXX.XXXX MHz
The displayed frequency is the current configured Output Frequency. To adjust the output frequency, use the
UP/DOWN arrow buttons. Single stepping will allow 12.5 kHz adjustment, while holding the buttons depressed will
change the frequency more quickly.
When this mode is selected, the display will read : Frq XXX.XXXX MHz
The displayed frequency is the current configured Output Frequency. To adjust the output frequency, use the
UP/DOWN arrow buttons. Single stepping will allow 12.5 kHz adjustment, while holding the buttons depressed will
change the frequency more quickly.
*
The displayed frequency represents the center of the band.
*
During frequency change, the output is muted and the RF ENABLED indicator is turned off for
5 seconds to avoid undesirable interference.
AUTO IF
When this mode is selected, the display will read: IF AGC Enabled
When this mode is selected, the display will read: IF AGC Enabled
or
IF AGC Disabled
IF AGC Disabled
Pressing the UP/DOWN buttons will toggle the display between Enabled and Disabled. When enabled, the
MA4040D will automatically optimize the IF level and ensure it is within a pre-set threshold range (default
MA4040D will automatically optimize the IF level and ensure it is within a pre-set threshold range (default
±
0.5 dB).
When disabled, the IF level can be manually adjusted as described in the next section.
*
The Auto IF mode should only be used for continuous IF inputs (non-bursty).
*
The Auto IF mode should be used for proper operation in redundant mode.
*
If the IF level is not within
±
4.0 dBmV of the optimum level during Auto IF mode, the output will
be muted to avoid undesirable interference, and the Alarm LED will be on.
*
At the time of shipping, the AUTO IF is enabled.
*
Because the IF AGC has been optimized for digital QAM signals, it is recommended that
AUTO IF is disabled for analog signals.
AUTO IF is disabled for analog signals.
IF LEVEL ADJUST
When this mode is selected, the display will read: IFPwr
When this mode is selected, the display will read: IFPwr
±±XX.X dB
The display indicates the approximate IF power level measured at the internal IF power detector. To adjust the IF
level, use the UP/DOWN arrow buttons. To configure the MA4040D Upconverter for optimum performance, the IF
level should be adjusted to read approximately 0.0 dB (-0.5 to +0.5). An IF level less than 0 dB will degrade noise
performance and a level above 0 dB will promote intermodulation products.
level, use the UP/DOWN arrow buttons. To configure the MA4040D Upconverter for optimum performance, the IF
level should be adjusted to read approximately 0.0 dB (-0.5 to +0.5). An IF level less than 0 dB will degrade noise
performance and a level above 0 dB will promote intermodulation products.
*
The IF level can only be adjusted if the Auto IF mode is disabled.