karn (05/09/83)
The following are AMSAT Phase 3-B Telemetry Equations received from Jan King , W3GEY, dated May 1, 1983: Ch.No. Function Equations / Comments =============================================================== 00 BCR Input Voltage V= 0.150 * N (Volts) 01 L-Xponder Power out P=(253-N)^2 /2000 (Watts-avg) 02 U-Xponder Rcvr Temp. T=(N-127) / 1.82 (deg. C) 03 -------------------- ----------------------------- 04 BCR Output Voltage V=0.075 * (N-10) (Volts) 05 Special Function 06 U-Xponder TX Temp. T=(N-127) / 1.82 (deg. C) 07 +14V Separated Current I=(N-15) * 20.64 (mA) (to transponders) 08 +10V Regulator Voltage V=(N-12) * 0.050 (Volts) 09 Helium Tank Pressure P=(N-34) * 44.44 (Bar) 1 Bar=1 Atmos. 0A IHU Module Temp. T=(N-127) / 1.82 (deg. C) 0B +14V Separated Current I=(N-15) * 4.128 (mA) (to other loads) 0C BCR Osc. #1 Status Status N=0=OFF , N=90=ON (at avg.load) 0D Helium Reg.Output Pres. P=(N-37) * 0.8 (Bar) 0E BCR Module Temp. T=(N-127) / 1.82 (deg. C) 0F +10V Regulator Current I=(N-15) * 4.128 (mA) ======================================================================= 10 BCR Osc #2 Status Status N=0=OFF , N=92=ON (at avg.load) 11 Spare Pressure Channel Not Used 12 SEU Module Temp. T=(N-127) / 1.82 (deg. C) 13 Battery Charge Current I=(N-15) * 10.32 (mA) for I<=0 ; N=0 14 +Z Sensor N=65=sun perpendicular to sensor surface N=20 to 30 : typical 15 Special Function 16 Main Battery #1 Temp. T=(N-127) / 1.82 (deg. C) 17 BCR Output Current I=(N-15) * 20.64 (mA) 18 -Z Sensor N=65=sun perpendicular to sensor surface N=20 to 30 : typical 19 Kick Motor Support T=(N-12) * 4.0 (deg. C) Truss Temp. delta T above Ch.# 2E Temp. 1A Main Battery #2 Temp. T=(N-127) / 1.82 (deg. C) 1B BCR Input Current I=(N-15) * 10.32 (mA) 1C Spin Rate Wz=0 < N < 139 : Wz=(508/(N-116))-2 Wz=139 <= N <= 255 : Wz=0.8 * (139-N)+20 1D L-Xponder A.G.C. N <=100 : 0 dB gain reduction N > 100 : gain red.(dB)=(N-100)^2 / -189 1E Aux. Battery Temp. T=(N-127) / 1.82 (deg. C) 1F Array #6 Current I=(N-15) * 4.128 (mA) (Arm 3 ; Panel b) ======================================================================== 20 U-Xponder Power Out P=(200-N)^2 / 2000 (Watts avg.) 21 Helium Tank Temp. T=(N-127) / 1.82 (deg. C) 22 Solar Array #1 Temp. T=(N-127) / 1.82 (deg. C) (Arm 1 ; Panel a) 23 Array #5 Current I=(N-15) * 4.128 (mA) (Arm 3 ; Panel a) 24 U-Xponder A.G.C. N <=83 : 0 dB gain reduction N > 83 : gain red.(dB)= -(N-83)^2 / 1000 25 L-Xponder Xmtr Temp. T=(N-127) / 1.82 (deg. C) 26 Solar Array #3 Temp. T=(N-127) / 1.82 (deg. C) (Arm 2 ; Panel a) 27 Array #4 Current T=(N-15) * 4.128 (mA) (Arm 2 ; Panel b) 28 Special Function 29 L-Xponder Rcvr.Temp. T=(N-127) / 1.82 (deg. C) 2A Solar Array #5 Temp. T=(N-127) / 1.82 (deg. C) (Arm 3 ; Panel a) 2B Array #3 Current I=(N-15) * 4.128 (mA) 2C Separated 14V Bus Volt. V=0.0615 * (N-10) (Volts) 2D Central Support Wall T=(N-127) / 1.82 (deg. C) Temp. (Arm 3) 2E +Z Skin Temp. (Arm 1) T=(N-127) / 1.82 (deg. C) 2F Array #2 Current I=(N-15) * 4.128 (mA) ======================================================================== 30 U-Xponder +9V Reg.Volt. V=(N-10) * 0.050 (Volts) 31 Central Support Wall T=(N-127) / 1.82 (deg. C) Temp (Arm 2) 32 -Z Skin Temp. (Arm 1) T=(N-127) / 1.82 (deg. C) 33 Array #1 Current I=(N-15) * 4.128 (mA) (Arm 1 ; Panel a) 34 Special Function 35 Central Support Wall T=(N-127) / 1.82 (deg. C) Temp. (Arm 1) 36 Nitrogen Tetroxide T=(N-127) / 1.82 (deg. C) Tank Temperature 37 ---------------------- ---------------------------- 38 Aux. Battery Voltage V=(N-10) * 0.075 (Volts) 39 Cent.Support Cylinder T=(N-127) / 1.82 (deg. C) Temp. (In Arm 1) 3A Earth Sensor Temp. T=(N-127) / 1.82 (deg. C) 3B ---------------------- ---------------------------- 3C L-Xpnder +9V Reg. Volt. V=(N-10) * 0.044 (Volts) 3D UDMH Tank Temperature T=(N-127) / 1.82 (deg. C) 3E Nutation Damper Temp. T=(N-127) / 1.82 (deg. C) 3F ---------------------- ---------------------------- ======================================================================= Channel 1C Spin Rate vs TLM Counts ---------------------------------- N Spin Rate (counts) (wZ) RPM 235 2 210 3 190 4 179 5 167 7 155 10 150 12 144 15 136 20 130 25 124 30 118 35 113 40 107 45 100 50