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 It is proposed to use the Q-blocks for decoding, since Y-Blocks may be withdrawn in the feature.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 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