Seatel DAC 2200 Commands

SEA TEL MODEL DAC-03/2200USER INTERFACE DESCRIPTION VERSION 4.20

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1.0 COMMAND SUMMARY

CONTROL CODES: FUNCTIONAaaaa↵ Move Azimuth to aaa.a degreesBaaaa↵ Set ships heading to aaa.a degreescnnnn↵ Set MHz/CHA tuning to nnnn MHzdnnnn↵ Set KHz/CHB tuning to nnnn KHz/MHzC Tracking (Step Track / Conscan) OND Tracking (Step Track / Conscan) OFFEaaaa↵ Move Elevation to aaa.a degreesgnnn↵ Set 24v polang position to nnnhnnn↵ Set 5v PWM polang position to nnnnJaaaa↵ Move azimuth to ship relative positionIaaaa↵ Move Cross Level to aaa.a degreesixxxx↵ Differential tracking position update. See details for jxxxx, kxxxx.labcd↵ Lumped i, j, k differential update.mannn↵ Store and Read parameter index a with value nnnNnnn↵ Set step track integral (0-255)nnnnn↵ Set remote “N” parameters to NnnnnOnnn↵ Output data to EME equipment (2 equal commands required)R Begin Spiral searchTaaaa↵ Move to satellite at aaa.a degreestxxxx↵ Set target NIDU Force cable unwrapW Write parameters to NV RAMXnnn↵ Set azimuth step track / conscan sensitivity to nnn steps (0-255)Ynnn↵ Set elevation step track / conscan sensitivity to nnn steps (0-255)Znnnn↵ Start diagnostic Test nnnn$mmmmm↵ NMEA Latitude / Longitude input (GPGLL format)^nnnn↵ Send remote Utility command ^nnnn to PCUesc Cancel Pending Command! Enable NVRAM writes

MONITOR CODES FUNCTION DAC RESPONSEH Relative Az,Ship Heading RaaaaHaaaa, cr, lf, >P Az/El/Cl Position Decimal EaaaaAaaaaCaaaa, cr, lf, >p Az/El/Cl Position Hex ExxxxAxxxxCxxxx ,cr, lf, >S DAC Status/Signal Strength S@@@@Lnnnn RL, cr, lf, >V Software Version DAC-03 VER N.NN, cr, lf, >q Read Tuning Frequencies, Rec NID Qnnnn nnnn xxxx, cr, lf, >u Read Polang, Aux A/D, Threshold GnnnnUnnnnTnnnn, cr, lf, >% Read Signal Strength Lnnnn RL, cr, lf, >@ Report Lat / Lon Position NdddmWdddm, cr, lf, >& Clear Error Status None?a↵ Remote Monitor Request remote response to “a” + <cr>

ABBREVIATIONS:aaaa = True/Magnetic Azimuth 0000 to 3599 or 0950 to 6300 rangexxxx = ASCII hex I/O data 0000 – FFFF rangennnn = ASCII decimal number (0000-9999)nnn = ASCII decimal number 0 to 255dddm = Lat/Lon in degrees (000 to 180) and tens of minutes(0-5)@@ = ASCII System Status words defined below:e = Error status↵ = Carriage return

This document applies to the latest DAC software versions 4.20, 4.60 and 5.13 as of the date indicatedbelow. Consult Sea Tel for information on other software versions or other ACU series documentation.


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2.0 CONTROL CODE DETAILSFor the following descriptions, one step equals 1/24 degree for standard pedestal control units, 1/48degree for high resolution pedestal control units.

Aaaaa↵ Move AZ to aaa.a degrees true.DAC Response: CR, LF,">" when command is accepted.

Baaaa↵ Set ships compass heading to aaa.a degrees. Sets Heading Valid flag (Bit 3, word 2).Resets calculated azimuth position (P command) to ships heading + azimuth relativeposition modulo 360.0 degrees. The ships heading is automatically updated by thegyro compass inputs to the ACU. Not valid for 1:1 gyro compass interface.DAC Response: cr, lf,">" when command is accepted.

baaaa↵ Set ships compass heading to aaa.a degrees without changing azimuth position.Similar to “Baaaa”, this command is used to incrementally update the ships headinginformation when derived from a serial NMEA gyro interface.DAC Response: none

C Tracking ON. Sets TRACKING ON status flag (bit 3 word 1). Enables step track orConscan movements. Default state OFF.DAC Response: None.

D Tracking OFF. Clears TRACKING ON status flag (bit 3 word 1). Disables tracking.DAC Response: None.

cnnnn↵ Sets tuning for DVB receiver or MHz tuning for SCPC receiver to nnnn MHz.DAC Response: CR, LF,">" when command is accepted.

dnnnn↵ Sets Symbol Rate for DVB receiver to nnnn x 4 or KHz tuning for SCPC receiver tonnnn / 4 KHz.DAC Response: CR, LF,">" when command is accepted.

Eaaaa↵ Move Elevation to aaa.a degrees.DAC Response: CR, LF,">" when command is accepted.

gnnn↵ Set 24v Polang position to nnn. For 24v polang systems 30 to 210 corresponds toapproximately -90 to +90 degrees from vertical. For flip antenna systems, 000corresponds to the flat plate array, 128 corresponds to the horn antenna.DAC Response: CR, LF,> when command is accepted.

hnnn↵ Set 5v PWM Polang position to nnn. For 5v polang systems 50 to 200 corresponds to aprobe angle of approximately -90 to +90 degrees from vertical.DAC Response: CR,FL,> when command is accepted.

Iaaaa↵ Move Cross Level to aaa.a degrees. 90.0 degrees equals the nominal horizontalposition. Used to position the antenna for high overhead pass optimization.DAC Response: CR, LF,> when command is accepted.


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ixxxx↵ Cross Level differential position command. Command format is ASCII HEX. Angularrange is 0000 – FFFF. 4000 = nominal position of 90 degrees. The commandcomputes the difference between current command and the last valid differential orabsolute command and adds this difference to the present target position. Sincetracking modifies the target position, this differential method provides a method forkeeping the tracking information cumulative while forward correcting the positioninformation to keep the pointing errors to a minimum. The numeric format of thiscommand allows 1/182 degree differential position resolution.DAC Response: CR, LF,">" when command is accepted.

Jaaaa↵ Move azimuth to ship relative position. Azimuth stabilization, Unwrap and Trackingmode remain active after a J command.DAC Response: CR, LF,">" when command is accepted.

jxxxx↵ Level (Elevation) differential position command. Functions just like the ixxxx commandabove but in the Elevation axis.DAC Response: CR, LF,">" when command is accepted.

kxxxx↵ Azimuth differential position command. Functions just like the ixxxx command abovebut in the Azimuth axis.DAC Response: CR, LF,">" when command is accepted.

labcd↵ Lumped “i”, “j”, “k” command. Allows up to 8 bit resolution of the differential i, j and kcommands to be sent as one command with an automatic position report from the PCUto reduce the communications channel overhead. The lower 8 or 9* bits of theindividual i, j and k commands are packed into ASCII characters as follows:a = CL lsb & 11000000 /4 + LV lsb & 11000000 /16 + AZ lsb & 11000000 /64 + “@”b = CL lsb & 00111111 + ”@”c = LV lsb & 00111111 + “@”d = AZ lsb & 00111111 + ”@” “@” = 01000000* For increased range, some PCU software versions expect to see the resolutionreduced from 1/182 to 1/96 degrees by pre-dividing the differential commands by 2before packing whith the above scheme.DAC Response: CR, LF,">" when command is accepted.

mannn↵ Mode set and read. For values of nnn between 0 and 255, sets the parameter indexedby “a’” to the value specified by nnn and echoes the value back. For values of nnn >255 only the current value of the parameter indexed by “a” is echoed back. Refer tosection 5 for a list of index values and associated parameters.DAC Response: m0nnnCR, LF,">" when command is accepted.

Nnnn↵ Set number of signal strength updates to accumulate for each trial step for step trackoperation. "N" should be set for a 2-6 second step track interval. Allowable range is 0to 255. A setting of 0 disables step track and enables Conscan.DAC Response: CR, LF,">" when command is accepted.

nnnnn↵ Sets Remote PCU parameters to Nnnnn. Used to set pedestal system type, adjustindividual axis gains and set reference offsets.DAC Response: CR, LF,">" when command is accepted.

Onnn↵ Output data to EME equipment. Changes logic state of output lines DO0-DO3. Data issent as ASCII hexadecimal. Allowable range of nnn "0" to "7"DAC Response: CR, LF,">" when command is accepted.


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R Starts two axis spiral search pattern for satellite (SEARCH2). Sets Searching status flag(bit 0, word 2) and Steptrack ON status flag (bit 3 word 1). Search pattern size andincrement is pre-set by the DAC-03 Setup parameters. Search is terminated by signallevel above threshold, end of search pattern or a new Az or EL position command. Ifno signal is found then antenna is returned to its original azimuth and elevation position.DAC Response: None

s This command is no longer supported in DAC-03 and DAC-2200 systems with a DVBreceiver.

W Write all setup parameters to NV RAM.DAC Response: None

Xnnn↵ Set azimuth step track size or conscan sensitivity to nnn steps. Allowable range is 0 to255. The maximum conscan sensitivity setting is 0. Increasing the conscan setting byone decreases the system sensitivity by a factor of 2.DAC Response: CR, LF,">" when command is accepted.

Ynnn↵ Set elevation step track size or conscan sensitivity to nnn steps. Allowable range is 0 -255 steps. Setting "Y" to zero disables elevation step track doubling the speed of theazimuth step track. See Xnnn setting for conscan information.DAC Response: CR, LF,">" when command is accepted.

$mmmmm↵ NMEA Latitude / Longitude input. Sentence format as follows:GPGLL,YYYY.YY,N,XXXXX.XX,W (,UTC optional) YYYY.YY = Latitude in Degrees,Minutes, Decimal minutes, N = North, S = South Latitude XXXXX.XX = Longitude inDegrees, Minutes, Dec Minutes E = East, W = West Longitude


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3.0 MONITOR CODE DETAILS

H Relative AZ / Ships Heading position report. Reports simultaneous value of AntennaRelative position and Ships heading position in tenths of degrees. Relative azimuthrange is 0950 to 6250. Ships heading range is 0000 3599.DAC Response: "RrrrrHaaaa",CR, LF,">"

P Az/El/Cl Position. Response is one line of ASCII characters representing the antennaelevation, true azimuth and cross level positions in tenths of a degree. Elevation rangeis 0000 to 0900. Azimuth range is 0000 to 3599.DAC Response: "EeeeeAaaaaCaaaa",CR, LF,">"

p Az/El position. Response is one line of ASCII characters representing the antennaelevation, azimuth and cross level positions to a resolution of 0.05 degree. Data formatis ASCII HEX with a range of 0000-FFFF representing 000 to 359.95 degrees.DAC Response: “ExxxxAxxxxCxxxx” CR, LF,">"

S DAC Status. Response is four ASCII status bytes,followed by the signal strength andRemote/Local RF switching status.DAC Response: "S@@@@LnnnnRL", cr, lf, ">"

@@@@ and RL Status Words:

WORD 1 WORD 2Bit 7 = 0 Bit 7 = 0Bit 6 = 1 Bit 6 = 1Bit 5 = Slow Scan Mode * Bit 5 = Azimuth targetingBit 4 = Sat Ref Mode Bit 4 = Elevation targetingBit 3 = Tracking On Bit 3 = Heading ValidBit 2 = Unwrap in progress Bit 2 = Block/MuteBit 1 = Remote Alarm Bit 1 Bit 1 = InitializingBit 0 = Remote Alarm Bit 0 Bit 0 = Searching

WORD 3 (ACU Errors) WORD 4 (PCU Errors)Bit 7 = 0 Bit 7 = 0Bit 6 = 1 Bit 6 = 1Bit 5 = Satellite out of range Bit 5 = Control Shutdown **Bit 4 = Conscan Disk Error Bit 4 = Stabilization Limit **Bit 3 = PCU Error Bit 3 = AZ Reference ErrorBit 2 = PCU Communication Error Bit 2 = AZ Servo Limit ErrorBit 1 = Wrong Synchro Converter Type Bit 1 = LV Servo Limit ErrorBit 0 = Gyro Read Error Bit 0 = CL Servo Limit Error

Remote RF Status Word Local RF Status WordBit 7 = 0 Bit 7 = 0Bit 6 = 1 Bit 6 = 1Bit 5 = 0 Bit 5 = Volt (18/13)Bit 4 = 0 Bit 4 = Tone (On/Off)Bit 3 = Sub Band Bit 3 = Force NIDBit 2 = M2 Poland Drive Bit 2 = FEC 2Bit 1 = M1 Polang Drive Bit 1 = FEC 1Bit 0 = Band Bit 0 = FEC 0

* Pedestal software released after January, 2005 (x97-1.54 and x03-2.24) changed thisbit assignment from Fast Reset to Slow Scan mode.

** These PCU Error / Status bits will only be functional with pedestal software releasedafter April, 2005 (x97-1.56 and x03-2.25).


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V Software Version. Response is ASCII string defining software model and version number.DAC Response: "DAC-03 VER N.NN",CR, LF,">"

q Tuner Settings. For DVB receiver selection, response is MHz tuning, Symbol rate andReceived NID. For SCPC or NBIF receiver selection, response is MHz portion , KHzportion and a null NID response. Symbol rate is displayed as Ksps rate / 16, i.e. 20,000Ksps is displayed as 5000.DAC Response: "Qnnnn nnnn xxxx",CR, LF,">"

u Polang / AUX / Threshold read. Response is polang position (nnnn) and Auxiliary A/Dreading (uuuu) from remote PCU and Threshold (nnnn) from the DAC. Reads polangpot scaled to degrees for 24 volt polang systems and polang PWM output for 5vsystems. For remotely switched feeds, 000 indicates primary feed, 128 indicatessecondary feed. Aux A/D reading is 0000-4095 for 0 to 5v input.DAC Response: "GnnnnUuuuuTnnnn",CR, LF,">"

% Signal Strength. Response is average AGC signal strength over previous 200mSeconds followed by the Remote and Local RF switching status. Range of AGCresponse is 0000 to 4095. Obsolete command now that signal strength is appended tothe status word response.DAC Response: LnnnnRL,cr, lf, ">"

@ Latitude / Longitude Position Read. Reports North/South Latitude and East/WestLongitude read from DAC front panel. Value may be from manual input or automaticGPS update. Resolution is in degrees and tens of minutes. NOTE: Higher resolutiondata is available from systems with GPS built into the antenna (x03, x04, x05, x06) byusing the “?@↵“ command.DAC Response: “NdddmWdddm”,CR, LF,”>“.

& Clear Error Status. Resets the DAC error code register and sends a “&” character tothe PCU to clear the PCU error status. Version 3.43 and later also clears the frontpanel LED.DAC Response: None.

?a↵ Request Remote Status. Sends the “a” Status Request command to the PCU andechoes the PCU response less checksums. ?S↵ gets PCU status, ?V↵ gets PCUVersion Number.DAC Response “PCU status response” + CR.Note, no LF, “>” is echoed for this command

4.0 GENERAL NOTES

The CR, LF,">" echo indicates that the DAC has accepted a command and is ready to process the nextcommand. Any additional commands will not be accepted until after the DAC echoes CR, LF,">".

The normal command latency for Monitor or Control commands is 25 milliseconds for an AntennaControl Unit with single serial port and 50 milliseconds for an Antenna Control Unit with dual serialports. The “?a” Remote Request Command latency is 75 milliseconds.

5.0 PARAMETER INDEX TABLE

The table on the following page correlates the index value for the “m” command with the varioussettable and readable parameters in the DAC-97. For 2 byte parameters, both the upper and the lowerbytes must be read or set to change the parameter. The most significant byte is always the first byte(lower address value) in the list.


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Memory Normal Auxilliary CommandAllocation Command Index Index Index

Name Bytes Rd Wr Decimal Hex +65 ASCII

El Trim 2 0 1 41 42 A BAz Trim 2 2 3 43 44 C Dmode 1 4 45 Eagc th 1 5 46 FEl Step Size 1 Y 6 47 GAz Step Size 1 X 7 48 HStep Integral 1 8 49 ISearch Inc 1 9 4A JSearch Limit 1 10 4B KSearch Delay 1 11 4C LStep Delay 1 N 12 4D MSystem Type 1 13 4E NGyro Type 1 14 4F OPolang Type 1 15 50 P24v Polang Offset 1 16 51 Q24v Polang Scale 1 17 52 RAz Limit 1 2 18 19 53 54 S T5v Offset 1 18 53 S5V Scale 1 19 54 TAZ Limit 2 2 20 21 55 56 U VPolang Tx Type 1 22 57 WError Type 1 23 58 X

AZ Limit 3 2 24 25 59 5A Y ZAZ Limit 4 2 26 27 5B 5C [ \AZ Limit 5 2 28 29 5D 5E ] ^AZ Limit 6 2 30 31 5F 60 _ `Init Heading (A5) 1 32 61 a

Lat 2 @ 33 34 62 63 b cLat ns 1 @ 35 64 dLon 2 @ 36 37 65 66 e fLon ew 1 @ 38 67 gSAT 2 T 39 40 68 69 h iSat ew 1 T 41 6A jHdg 2 42 43 6B 6C k lR Hdg 2 H B 44 45 6D 6E m nTHRS 2 B 46 47 6F 70 o pMHZ 2 q c 48 49 71 72 q rKHZ 2 q d 50 51 73 74 s tFEC Tone Volt 1 52 75 uPOL SEL 1 53 76 vAGC 2 % 54 55 78 xRemote AUX 2 u 56 57 79 7A y zRemote POL 2 u g 58 59 7B 7C { |

7D

SeaTel DAC 03/2200 ACUSTATUS WORD DECODING TABLE

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WORD 1 | WORD2

Tracking---++--- Unwrap Tracking---++--- Unwrap Hdg Valid--++--- Block Hdg Valid--++--- BlockSat Ref --+||+-- Data1 Sat Ref --+||+-- Data1 El Trg --+||+-- Init El Trg --+||+-- InitSlowScn -+||||+- Data0 SlowScn -+||||+- Data0 Az Trg -+||||+- Search Az Trg -+||||+- Search |||||| |||||| |||||| |||||| @ 000000 ` 100000 @ 000000 ` 100000 A 000001 a 100001 A 000001 a 100001 B 000010 b 100010 B 000010 b 100010 C 000011 c 100011 C 000011 c 100011 D 000100 d 100100 D 000100 d 100100 E 000101 e 100101 E 000101 e 100101 F 000110 f 100110 F 000110 f 100110 G 000111 g 100111 G 000111 g 100111 H 001000 h 101000 H 001000 h 101000 I 001001 i 101001 I 001001 i 101001 J 001010 j 101010 J 001010 j 101010 K 001011 k 101011 K 001011 k 101011 L 001100 l 101100 L 001100 l 101100 M 001101 m 101101 M 001101 m 101101 N 001110 n 101110 N 001110 n 101110 O 001111 o 101111 O 001111 o 101111 P 010000 p 110000 P 010000 p 110000 Q 010001 q 110001 Q 010001 q 110001 R 010010 r 110010 R 010010 r 110010 S 010011 s 110011 S 010011 s 110011 T 010100 t 110100 T 010100 t 110100 U 010101 u 110101 U 010101 u 110101 V 010110 v 110110 V 010110 v 110110 W 010111 w 110111 W 010111 w 110111 X 011000 x 111000 X 011000 x 111000 Y 011001 y 111001 Y 011001 y 111001 Z 011010 z 111010 Z 011010 z 111010 [ 011011 { 111011 [ 011011 { 111011 \ 011100 | 111100 \ 011100 | 111100 ] 011101 } 111101 ] 011101 } 111101 ^ 011110 ~ 111110 ^ 011110 ~ 111110 _ 011111 C 111111 _ 011111 C 111111

SeaTel DAC 03/2200 ACUSTATUS WORD DECODING TABLE


WORD 3 (ACU Errors) WORD 4 (PCU Errors)

Tracking---++---PCU Comm Tracking---++---PCU Comm Az Ref ---++--- Az Lim Az Ref ---++--- Az LimCon Disk--+||+--Conv Typ Con Disk--+||+--Conv Typ StabLim --+||+-- Lv Lim StabLim --+||+-- Lv LimSat Rng -+||||+-Gyro Rd Sat Rng -+||||+-Gyro Rd ShutDwn -+||||+- Cl Lim ShutDwn -+||||+- Cl Lim |||||| |||||| |||||| |||||| @ 000000 ` 100000 @ 000000 ` 100000 A 000001 a 100001 A 000001 a 100001 B 000010 b 100010 B 000010 b 100010 C 000011 c 100011 C 000011 c 100011 D 000100 d 100100 D 000100 d 100100 E 000101 e 100101 E 000101 e 100101 F 000110 f 100110 F 000110 f 100110 G 000111 g 100111 G 000111 g 100111 H 001000 h 101000 H 001000 h 101000 I 001001 i 101001 I 001001 i 101001 J 001010 j 101010 J 001010 j 101010 K 001011 k 101011 K 001011 k 101011 L 001100 l 101100 L 001100 l 101100 M 001101 m 101101 M 001101 m 101101 N 001110 n 101110 N 001110 n 101110 O 001111 o 101111 O 001111 o 101111 P 010000 p 110000 P 010000 p 110000 Q 010001 q 110001 Q 010001 q 110001 R 010010 r 110010 R 010010 r 110010 S 010011 s 110011 S 010011 s 110011 T 010100 t 110100 T 010100 t 110100 U 010101 u 110101 U 010101 u 110101 V 010110 v 110110 V 010110 v 110110 W 010111 w 110111 W 010111 w 110111 X 011000 x 111000 X 011000 x 111000 Y 011001 y 111001 Y 011001 y 111001 Z 011010 z 111010 Z 011010 z 111010 [ 011011 { 111011 [ 011011 { 111011 \ 011100 | 111100 \ 011100 | 111100 ] 011101 } 111101 ] 011101 } 111101 ^ 011110 ~ 111110 ^ 011110 ~ 111110 _ 011111 C 111111 _ 011111 C 111111

SeaTel DAC-03/2200 ACUReceiver (RF) Status Decoding Table

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WORD 1 Remote SW WORD2 Local SW (FECtv)

IO1(SubB)--++--- Pol2 ---++--- F-NID --++--- F2 F-NID --++--- F2 --+||+-- Pol2 ---++--- Tone --+||+-- F1 Tone --+||+-- F1 -+||||+- IO-0(Band) -+||||+- Volt -+||||+- F0 Volt -+||||+- F0 asc |||||| dec asc |||||| dec asc |||||| dec asc |||||| dec @ 000000 0 ` 100000 32 @ 000000 0 ` 100000 32 A 000001 1 a 100001 33 A 000001 1 a 100001 33 B 000010 2 b 100010 34 B 000010 2 b 100010 34 C 000011 3 c 100011 35 C 000011 3 c 100011 35 D 000100 4 d 100100 36 D 000100 4 d 100100 36 E 000101 5 e 100101 37 E 000101 5 e 100101 37 F 000110 6 f 100110 38 F 000110 6 f 100110 38 G 000111 7 g 100111 39 G 000111 7 g 100111 39 H 001000 8 h 101000 40 H 001000 8 h 101000 40 I 001001 9 i 101001 41 I 001001 9 i 101001 41 J 001010 10 j 101010 42 J 001010 10 j 101010 42 K 001011 11 k 101011 43 K 001011 11 k 101011 43 L 001100 12 l 101100 44 L 001100 12 l 101100 44 M 001101 13 m 101101 45 M 001101 13 m 101101 45 N 001110 14 n 101110 46 N 001110 14 n 101110 46 O 001111 15 o 101111 47 O 001111 15 o 101111 47 P 010000 16 p 110000 48 P 010000 16 p 110000 48 Q 010001 17 q 110001 49 Q 010001 17 q 110001 49 R 010010 18 r 110010 50 R 010010 18 r 110010 50 S 010011 19 s 110011 51 S 010011 19 s 110011 51 T 010100 20 t 110100 52 T 010100 20 t 110100 52 U 010101 21 u 110101 53 U 010101 21 u 110101 53 V 010110 22 v 110110 54 V 010110 22 v 110110 54 W 010111 23 w 110111 55 W 010111 23 w 110111 55 X 011000 24 x 111000 56 X 011000 24 x 111000 56 Y 011001 25 y 111001 57 Y 011001 25 y 111001 57 Z 011010 26 z 111010 58 Z 011010 26 z 111010 58 [ 011011 27 { 111011 59 [ 011011 27 { 111011 59 \ 011100 28 | 111100 60 \ 011100 28 | 111100 60 ] 011101 29 } 111101 61 ] 011101 29 } 111101 61 ^ 011110 30 ~ 111110 62 ^ 011110 30 ~ 111110 62 _ 011111 31 • 111111 63 _ 011111 31 • 111111 63

SeaTel 03/04 PCUSTATUS WORD DECODING TABLE


WORD 1 | WORD2

DishScan---++--- Unwrap DishScan---++--- Unwrap Hdg Valid--++--- Error Hdg Valid--++--- ErrorSat Ref --+||+-- DataIn3 Sat Ref --+||+-- DataIn3 Spare --+||+-- INIT Spare --+||+-- INITFast TC -+||||+- DataIn2 Fast TC -+||||+- Data In2 Az Trg -+||||+- Hi Elev Az Trg -+||||+- Hi Elev |||||| |||||| |||||| |||||| @ 000000 ` 100000 @ 000000 ` 100000 A 000001 a 100001 A 000001 a 100001 B 000010 b 100010 B 000010 b 100010 C 000011 c 100011 C 000011 c 100011 D 000100 d 100100 D 000100 d 100100 E 000101 e 100101 E 000101 e 100101 F 000110 f 100110 F 000110 f 100110 G 000111 g 100111 G 000111 g 100111 H 001000 h 101000 H 001000 h 101000 I 001001 i 101001 I 001001 i 101001 J 001010 j 101010 J 001010 j 101010 K 001011 k 101011 K 001011 k 101011 L 001100 l 101100 L 001100 l 101100 M 001101 m 101101 M 001101 m 101101 N 001110 n 101110 N 001110 n 101110 O 001111 o 101111 O 001111 o 101111 P 010000 p 110000 P 010000 p 110000 Q 010001 q 110001 Q 010001 q 110001 R 010010 r 110010 R 010010 r 110010 S 010011 s 110011 S 010011 s 110011 T 010100 t 110100 T 010100 t 110100 U 010101 u 110101 U 010101 u 110101 V 010110 v 110110 V 010110 v 110110 W 010111 w 110111 W 010111 w 110111 X 011000 x 111000 X 011000 x 111000 Y 011001 y 111001 Y 011001 y 111001 Z 011010 z 111010 Z 011010 z 111010 [ 011011 { 111011 [ 011011 { 111011 \ 011100 | 111100 \ 011100 | 111100 ] 011101 } 111101 ] 011101 } 111101 ^ 011110 ~ 111110 ^ 011110 ~ 111110 _ 011111 C 111111 _ 011111 C 111111

WORD 3 PCU Errors

Az Ref ---++--- Az TC Lim AZ Ref ---++--- Az TC LimStabLim --+||+-- Lv TC Lim StabLim--+||+-- Lv TC LimShutDwn -+||||+- Cl TC Lim ShutDwn-+||||+- Cl TC Lim |||||| |||||| @ 000000 P 010000 A 000001 Q 010001 B 000010 R 010010 C 000011 S 010011 D 000100 T 010100 E 000101 U 010101 F 000110 V 010110 G 000111 W 010111 H 001000 X 011000 I 001001 Y 011001 J 001010 Z 011010 K 001011 [ 011011 L 001100 \ 011100 M 001101 ] 011101 N 001110 ^ 011110 O 001111 _ 011111

Typical PCU STATUS code read at ACU is SYH@* which decodes as:

Sat Ref, DishScan, Data In2, Heading Valid, No errors

Seatel DAC 2200 Commands

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