FlexRadio Systems SDR-1000 User Manual

F R O N T C O N S O L E C H A P T E R 7
 ADC L (Analog To Digital Left): Calculates the level in dBFS (decibel full scale) of Left input
from the sound card.
 ADC R (Analog To Digital Right): Calculates the level in dBFS (decibel full scale) of Right input
from the sound card.
 Off: Used for debugging purposes or to save CPU cycles on slower machines.
TX Meters
 Fwd Pow: Reads out forward power minus reflected power in Watts as measured by the hardware
ADC on the PA if it is installed. If the PA is not installed (the 1W configuration), this meter shows
the calculated power output according to the DSP based on 1W full output. In either case, the meter
shows average power.
Note: In SSB, the typical male voice peak to average ratio is 14dB. This means
that when you do not have the compressor and/or compander enabled an
average meter will only read 4-10W (with a typical voice) when peaking
at 100W.
With the ALC we are using the average power. With these controls, very
high average power can be tolerated.
 Ref Pwr (PA Reflected Power): Reads out reflected power as measured by the hardware ADC on
the PA. (Only available with the PA)
 SWR (PA Standing Wave Ratio): Reads out the standing wave ratio as calculated from the
hardware ADC on the PA. (Only available with the PA with TUN on)
 Mic: Reads modulation power from -20 dB to 3 dB. Ideal operation will peak around 0 dB and will
rarely if ever hit 3 dB. If it is hitting 3 dB, the ALC is cutting back the power. Adjust the MIC
control on the front console to give more or less modulation.
 EQ: Reads the power in Watts following the equalizer. If the equalizer is not enabled, the equalizer
power is equal to the Mic power.
 Lev: Reads the power in Watts following the leveler. The leveler attempts to level the voice coming
from the microphone as the head and mouth change position relative to the microphone element. If
the leveler is not enabled, this power is identical to EQ.
 Lev Gain: Reads the gain in dB currently being applied by the leveler.
 Comp: Reads the power in Watts after the compressor. If it is not enabled, it reads the same as Lev.
42 FlexRadio Systems

FlexRadio Systems SDR-1000 Specifications

General

Brand	FlexRadio Systems
Model	SDR-1000
Category	Radio
Language	English