Posted: Mon Sep 12, 1988 8:44 PM GMT Msg: KGII-3733-1091
From: AMSATDL
To: DOCS
Subj: Q-BLOCK TELEMTRY FORMAT (PSK)
A M S A T O S C A R - 1 3
T E L E M E T R Y
B L O C K F O R M A T
Compiled by DB2OS
for AMSAT-DL
1st September 1988
AMSAT OSCAR-13 (like all P3-Satellites) transmits 512 bytes per block,
treated as 8 lines of 64 bytes each. Blocks are identified according to
the first byte of the block (followed by space, coded as #20).
K, L, M, N blocks are message blocks (flying mailbox) from one command
station to another, but also used for broadcast. All characters use
ASCII representation. Bit 7 set to 1 may be used to indicate highlighted
character display. No CR/LF will be transmitted, they should be inserted
at the ground after 64 received characters!
Q blocks carry 128 logical telemetry channels in compressed data format.
Y blocks carry 64 plain text analog telemetry channels and will be sent
infrequently (less than Q-blocks). It is proposed to use the Q-blocks
for decoding, since Y-Blocks may be withdrawn in the feature.
Q-Block format:
---------------
Q HI, THIS IS AMSAT OSCAR 13 hh:mm:ss dddd
#hhhh #hhhh #hhhh
ddd ddd ddd ddd ddd ddd ddd
0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF
0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF
0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF
0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF
Line specification:
-------------------
Line 0:
Byte pos.= 0 2 48 58
<Q|Y> <text,name> hh:mm:ss dddd
U T C AMSAT day number
1 January 1978 = 0
Line 1:
Byte pos.= 0 8 16
#hhhh #hhhh #hhhh
safety transponder command
information status number
word (Syspage
(see below) byte #5E)
Safety Information Word (Emergency Flags):
bit significance
0..7 as Syspage byte #56
8 Low Power, QRP mode
9 Extremly low power, QRPP mode
10 Command loss (Watchdog)
11 High temperature (battery or transponder)
12 Sunangle exceeds limit (~50 degrees)
13..15 not used
Line 2:
Byte pos.= 0 4 8 12 16 20 24
ddd ddd ddd ddd ddd ddd ddd
2MUX0 2MUX1 2MUX2 2MUX3 2MUX4 2MUX5 2MUX6
(Syspage #40 #41 #42 #43 #44 #45 #46)
Line 3: empty, blank line.
Line 4:
Byte = 0 10 20 30
0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF
Line 5:
Byte = 40 50 60 70
0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF
Line 4 and 5 are the telemetry channels #00 to #7F of the INTERMEDIATE
EVENT SYSPAGE buffer. Up to 6 events stored, 128 bytes per event. The
buffers are read out cyclically, one event at a time. The time recorded
and the event counter identify the particular event.
Line 6:
Byte = 0 10 20 30
0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF
Line 7:
Byte = 40 50 60 70
0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF
Line 6 and 7 are the SYSPAGE logical telemetry channels #00 to #7F,
normally used to display realtime telemetry. Decode according to the
OSCAR-13 telemetry decoding document. Bytes are expressed directly, not
as character values.
In Y-Blocks only SYSPAGE channels #00 to #3F (analog channels) are
transmitted in ASCII (16 channels per line, 4 bytes per channel)!!
Example for Y-Blocks:
---------------------
Y HI, THIS IS AMSAT OSCAR 13 19:22:41 3894
#00A6 #0020 #0193
64 1 255 166 19 230 0
193 7 147 7 193 7 164 117 200 7 130 25 118 7 149 32
7 7 133 7 13 7 131 112 14 7 131 7 112 7 131 7
155 129 134 148 191 145 132 142 75 145 132 7 228 129 127 7
179 129 126 128 62 141 132 7 13 127 124 7 208 133 125 7
Example for decoded Q-Blocks: (as displayed on the ATARI 800XL IPS
----------------------------- groundsoftware package of AMSAT-DL)
Q HI, THIS IS AMSAT OSCAR 13 19:25:57 3894
#00A6 #0020 #0193 64 1 255 166 19 230 0
SA 1.2
COM-U RUDAK-ON
CMD-F -140 U9-V 9.1 2-ANT HI T-TX 25.7
F-BIT 405.5 U14V-ST 14.6 70-ANT HI T-RX 15.7
AGC DB -6 I14V-ST 2402 T-S 4.0
MEM 5 CW-S 55 P-OUT 11.2
Q HI, THIS IS AMSAT OSCAR 13 19:25:57 3894
#00A6 #0020 #0193 64 1 255 166 19 230 0
SA 1.2
STROEME: SPANNUNGEN: LEISTUNGEN: PANEL-I UND T:
BCR-SIN 31.0 P1 422
BCR-IN 0 BCR-IN 37.2 PANELS 0.0 P2 160
BAT-NET 74 P-BAT 1.0 P3 0
BAT-CH 0 BCR-SO 14.5 P4 611
BCR-OUT 2596 BCR-OUT 14.6 BCR-OUT 37.9 P5 694
14V-ST 2402 14V-ST 14.6 P-TRANS 35.0 P6 0
14V-S 43 A-BAT 0.2 P-HF 11.2 SC-ROH #00F1
10V-C 77 10V-C 10.0 T-P1 8.1
BCR-O1 10.0 T-ABAT1 6.4
BCR-O2 0.7 T-MBAT 6.4
Q HI, THIS IS AMSAT OSCAR 13 19:25:57 3894
#00A6 #0020 #0193 64 1 255 166 19 230 0
SA 1.2
T'S ARM 1: T'S ARM 2: T'S ARM 3: T'S ZENTRUM:
P1 8.1 P3 6.9 P5 6.9 N2O4 6.9
RX-U 15.7 SEU 7.5 HELIUM 5.2 AZ50 7.5
RX-L 14.5 T-TO-S 1.7 IHU 5.8
WALL 12.2 WALL 5.2 RUDAK 5.2
TOP 4.0 BCR 16.9 M-BAT 6.4
BOTTOM 3.4 ABAT-1 6.4 NUT-D 2.8
TX-U 25.7 ABAT-2 6.4
TX-L 14.5
TX-S 4.0
Q HI, THIS IS AMSAT OSCAR 13 19:25:57 3894
#00A6 #0020 #0193 64 1 255 166 19 230 0
SA 1.2
NAV, POS: 162-165
SPINRATE 36.1 SS-1 0* S-SENS 5
T-HE 5.2 SS-2 1* ES-SENS 64
T-N2O4 6.9 LS-A(MV) 0 LS-R'S 7.5
T-AZ50 7.5 LS-M(MV) 8 L-O#,Z #A26F
ES-M 241 U-O#,Z #A26F
ES-A 241
SPERR-# 15
M-STATUS 0
M-SOLL 246
END
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