MDO3000 Programmer Manual.pdf - 第867页

Commands Listed in Alphabetical Order Group Tr i g g e r Syntax TRIGger:A:BUS :B<x>:MIL1553B:C ONDition {SYNC|COMMAND |STATus|DATA|TIM e|ERRor} TRIGger:A:BUS :B<x>:MIL1553B:C ONDition? Related Commands Most o…

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Commands Listed in Alphabetical Order
transmit/rece
ive bit defines the direction of information flow, and is always from
the point of view of the remote terminal.
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
Trigger
Syntax
TRIGger:A:BUS:B<x>:MIL1553B:COMMAND:TRBit {RX|TX|X}
TRIGger:A:BUS:B<x>:MIL1553B:COMMAND:TRBit?
R
elated Commands
TRIGger:A:BUS:B<x>:MIL1553B:CONDition
TRIGger:A:BUS:B<x>:MIL1553B:COMMAND:COUNt
Arguments
RX (logic 0) directs the instrument to trigger on a TX or "transmit" from a remote
terminal .
TX (logic 1) directs the instrument to trigger on 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
trigger on a TX or “transmit” from a remote terminal.
TRIGger:A:BUS:B1:MIL1553B:COMMAND:TRBit TX? might return TX.
TRIGger:A:BUS:B<x>:MIL1553B:CONDition
This command specifies a word type or condition within a MIL-STD-1553 bus
word to trigger on.
B<x>
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.
2-836 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Group
Trigger
Syntax
TRIGger:A:BUS:B<x>:MIL1553B:CONDition
{SYNC|COMMAND|STATus|DATA|TIMe|ERRor}
TRIGger:A:BUS:B<x>:MIL1553B:CONDition?
Related Commands
Most of the other TR IGger:A:BUS:B<x>:MIL1553B commands are impacted
by the setting of this command.
BUS:B<x>:MIL1553B:POLarity
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 trigger on either the RT (remote terminal response time), or
the IMG (Inter-message Gap). Use the commands TRIGger:A:BUS:B<x>:
MIL1553B:TIMe:QUALifier, TRIGger:A:BUS:B<x>:MIL1553B:TIMe:
LESSLimit,andTRIGger:A:BUS:B<x>:MIL1553B:TIMe:MORELimit to
specify the time parameters.
ERRor specifies to trigger upon a signaling error. (You can specify which type
of error — Parity, Sync, Manchester or Non-contiguous Data — by using the
TRIGger:A:BUS:B<x>:MIL1553B:ERRTYPE command.)
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-837
Commands Listed in Alphabetical Order
NOTE.
Use the
TRIGger:A:BUS :B<x>:MIL1553B:CONDition:STATus:BIT
commands to se
t the following bits:
9 — me ssage error
TRIGger:A:
BUS:B<x>:MIL1553B:STATus:BIT:ME
10 — instrumentation
TRIGger:A:
BUS:B<x>:MIL1553B:STATus:BIT:INSTR
11 — SRQ (service request)
TRIGger:A
:BUS:B<x>:MIL1553B:STATus:BIT:SRQ
15 — BCR (broadcast command received)
TRIGger:
A:BUS:B<x>:MIL1553B:STATus:BIT:BCR
16 — busy
TRIGger
:A:BUS:B<x>:MIL1553B:STATus:BIT:BUSY
17 — subsystem flag
TRIGge
r:A:BUS:B<x>:MIL1553B:STATus:BIT:SUBSF
18 — DBCA (dynamic b us control acceptance)
TRIGg
er:A:BUS:B<x>:MIL1553B:STATus:BIT:DBCA
19 — terminal flag
TRIG
ger:A:BUS:B<x>:MIL1553B:STATus:BIT:TF
Examples
:TRIGger:A:BUS:B1:MIL1553B:CONDition STATus sets the word type to
trigger on to
STATus.
:TRIGger:A:BUS:B1:MIL1553B:CONDition? might return DATA.
TRIGger:A:BUS:B<x>:MIL1553B:DATa:PARity
When the MIL-STD-1553 bus trigger condition is set to DATa, this command
specifies the data parity bit to be used in the trigger. Returned values are 0,1,or
X (don’t care).
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
Trigger
2-838 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual