User's Manual
ISO 9001:2000 Cert. N°4500/1
Version 1.1 SDT_ARK6_User_Manual_ENG_vATSC Page 77 of 206
Table 17. Output window
Box
Parameter / Control
Description
Admitted Ranges / Values
General
RF ON / OFF
Output RF signal enabling. The possible output RF signal status are
the following:
ON;
RF OFF: automatic switch off of the output signal (refer to
Amplifier status);
OFF: manual switch off of the output signal.
Green: ON
Green: RF OFF
Red: OFF
Clock
Frequency reference
Frequency reference source selector. This command will select the
reference source used to lock the internal clocks (10 MHz and 1
PPS). When set to internal the 10 MHz clock and 1 PPS generator
runs unlocked. When set to external or GPS the 10 MHz clock is
locked to the source selected and the 1 PPS counter reset is
triggered by the source 1 PPS.
Note: External 10 MHz, 1PPS and GPS shall be connected and
locked when the External and GPS are selected as frequency
references. If the Network Mode is SFN and the Frequency
Reference is set to Internal, the frequency reference is
automatically forced to GPS and the event “Freq Ref Forced: GPS”
is generated Use the Actual Freq. Ref.indicator in order to check
the used reference source.
External
Internal
GPS
Clock
Actual Freq. Ref.
Frequency reference source actually used.
External
Internal
GPS
Centre
Frequency[Hz]
Shows the output centre frequency expressed in Hz.
AGC
AGC ON
AGC status.
Green: ON
Grey: OFF