FHNW Institute of Astronomy: Status Phoenix-4

Phoenix-4 status information on 18-05-2012 14:29:48 UT

              Latest FPU Data:
         Decimal_Time    = 14.5415
         V_InputVoltage   = 44.7 V
         V_NoiseSource    = 28.7 V
         V_fifteen_Supply = 14.3 V
         V_minfif_Supply = -14.3 V
         V_five_Supply    = 5.05 V
         T_Electronics    = 22.1°C
         T_NoiseSource    = 25.1°C
         T_Preamplifier   = 24.9°C
         T_Ambient       = 18.0°C
         RelativeHumidity = 55.6 %
         Digital input    = !007F00

The 7m dish with a crossed logarithmic periodic antenna at Bleien observatory (east) covers 100 MHz - 4 GHz.
Currently, there is one Callisto spectrometer 100 MHz - 870 MHz connected to LHCP and a second one to RHCP.
Sampling rate is 800 pixels/sec and 100 pixels/sweep thus 1 sweep takes 125 msec.
If the displayed unit = ADU then it represents analog-digital units from the internal ADC (-> not calibrated)
If the displayed unit = SFU then Callisto is calibrated, but shows only S/2. You have to add them: S_total = S_lhcp + S_rhcp
Frequency resolution is 62.5KHz, radiometric bandwidth 300 KHz and the integration time is 1 msec.

Last calibration: cold sky + receiver 20090731, quiet sun 20090801 (cm)

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