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