MDO3000 Programmer Manual.pdf - 第708页

Commands Listed in A lphabetical Order NOTE. Ther e ar e thr ee types of MIL-STD-1553 (Aircraft) bus wor ds: Command, Status, and Data, all sharing a common structur e twenty bits in length. The fi rst thr ee bits are use…

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Commands Listed in Alphabetical Order
Examples
SEARCH:SEARCH
1:TRIGger:A:BUS:B1:MIL1553B:COMMAND:
SUBADdress “01000”
sets the sub-address to be used in the search to 01000.
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:COMMAND:TRBit
When the MIL-STD-1553 bus search condition is set to COMMAND, this command
specifies that the transmit/receive bit (bit 9) is to be used in the search. The
transmit/receive bit defines the direction of information flow, and is always from
the point of view of the remote terminal.
SEARCH<x> is the search number, which
is always 1, and
B<x>
Conditions
This command requires a DPO4AERO application module for DPO/MSO4000B
and MDO4000/B/C models or MDO3AERO application module for
MDO3000 models.
Group
Search
Syntax
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:COMMAND:TRBit
{RX|TX|X}
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:COMMAND:TRBit?
Related Commands
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:CONDition
SEARCH:SEARCH<
x>:TRIGger:A:BUS:B<x>:MIL1553B:COMMAND:
COUNt
Arguments
RX (logic 0) di
rects the instrument to search for a TX or "transmit" from a remote
terminal .
TX (logic 1) directs the instrument to search for an RX or "receive" from a remote
terminal.
X indicates “don’t care".
Examples
TRIGger:A:BUS:B1:MIL1553B:COMMAND:TRBit TX directs the instrument to
search for a TX or “transmit” from a remote terminal.
TRIGger:A:BUS:B1:MIL1553B:COMMAND:TRBit TX? might return TX.
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:CONDition
This command specifies a word type or condition within a MIL-STD-1553 bus
word to search for.
SEARCH<x> is the search number, which is always 1, and B<x>
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-677
Commands Listed in Alphabetical Order
NOTE. There are
three types of MIL-STD-1553 (Aircraft) bus words: Command,
Status, and Data, all sharing a common structure twenty bits in length. The first
three bits are used as a synchronization field. The last bit is the odd parity of the
previous 16 bits.
Conditions
This command requires a DPO4AERO application module for DPO/MSO4000B
and MDO4000/B/C models or MDO3AERO application module for
MDO3000 models.
Group
Search
Syntax
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:CONDition
{SYNC|COMMAND|STATus|DATA|TIMe|ERRor}
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:CONDition?
Related Commands
Most of the other SEARCH:SEARCH1:TRIGger:A :BUS:B<x>:MIL1553B
commands are impacted by the setting of this command.
TRIGger:A:BUS:B<x>:MIL1553B:CONDition
BUS:B<x>:MIL1553B:SOUrce
Arguments
SYNC refers to the 3–bit sync pulse that precedes each word.
COMMAND is one of 3 16–bit word types. It specifies the function that a remote
terminal is to perform.
STATus is one of 3 16–bit word types. Remote terminals respond to valid message
transmissions via status words.
DATA is one of 3 16–bit word types.
TIMe specifies to search for either the RT (remote terminal response
time), or the IMG (Inter-message Gap). Use the commands SEARCH:
SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:TIMe:QUALifier, SEARCH:
SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:TIMe:LESSLimit,and
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:TIMe:MORELimit
to specify the time parameters.
ERRor specifies to search for a signaling error. (You can specify which type of error
— Parity, Sync, Manchester or Non-contiguous Data — by using the command
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:ERRTYPE.)
2-678 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
NOTE. Use the
SEARCH:SEA RCH1:TRIGger:A:BUS:B<x>:MIL1553B:CONDition:STAT us:BIT
commands to set the following bits:
9 — message error
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:STATus:BIT:ME
10 — instrumentation
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:STATus:BIT:INSTR
11 — SRQ (service request)
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:STATus:BIT:SRQ
15 — BCR (broadcast command received)
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:STATus:BIT:BCR
16 — busy
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:STATus:BIT:BUSY
17 — subsy stem flag
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:STATus:BIT:SUBSF
18 — DBCA (dynamic bus control acceptance)
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:STATus:BIT:DBCA
19 — terminal flag
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:STATus:BIT:TF
Examples
SEARCH:SEARCH1:TRIGger:A:BUS:B1:MIL1553B:CONDition STAT sets
the word type to search for to
STATus.
SEARCH:SEARCH1:TRIGger:A:BUS:B1:MIL1553B:CONDition? might
return DATA.
SEARCH:SEARCH<x>:TRIGger:A:BUS:B<x>:MIL1553B:DATa:PARity
When the MIL-STD-1553 bus search condition is set to DATa, this command
specifies the data parity bit to be used in the search. Returned values are 0, 1, or X
(don’t care).
SEARCH<x> is the search number, which is always 1, and B<x>
Conditions
This command requires a DPO4AERO application module for DPO/MSO4000B
and MDO4000/B/C models or MDO3AERO application module for
MDO3000 models.
Group
Search
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-679