Lecroy WSXS-I2CBUS TD WSXS-I2CBUS TD trigger and decoder extension Compatible with LeCroy WaveSurfer® oscilloscopes. WSXS-I2CBUS TD Benutzerhandbuch
Produktcode
WSXS-I2CBUS TD
Operator's Manual
919586 RevA
103
MIL-STD-1553 Decode Setup Detail
For general information about using controls shown on the main Serial Decode dialog, refer to Accessing The D
and TD Supported Protocol Toolsets (on page 13).
and TD Supported Protocol Toolsets (on page 13).
MIL-STD-1553
B
ASIC AND
L
EVELS
R
IGHT
-H
AND
D
IALOGS
Access the Serial Decode dialog by touching Analysis → Serial Decode on the menu bar.
Touch the corresponding Setup... button for your decode. The Decode Setup... along with corresponding right-
hand dialogs are shown.
hand dialogs are shown.
MIL-STD-1553 Basic Right-Hand Dialog
The Basic right-hand dialog provides detailed controls and setup conditions as follows:
Table Mode - Choosing Word or Transfer shows/hides different columns from the table display. Word
displays the Status column on your table display; Transfer shows Resp, Data, IMG, and Status columns on
your table display.
displays the Status column on your table display; Transfer shows Resp, Data, IMG, and Status columns on
your table display.
Viewing Mode - Select to view the protocol data in Binary or Hexadecimal mode.
Response Time - Provide From and To time lengths as desired.
Inter Message Gap - Enter a Minimum threshold value for this parameter.
MIL-STD-1553 Level Right-Hand Dialog
The Level right-hand dialog provides detailed controls and setup conditions as follows:
Adjust levels using Absolute or Percent Types. While High and Low values can be modified, preset levels are
initially set to cross small amplitude signals.
initially set to cross small amplitude signals.
PLEASE NOTE THE FOLLOWING:
Choose voltage or percentage level values carefully. High and Low values you provide are applied across
all amplitudes.
all amplitudes.
While MIL-1553 messages can contain varied amplitudes, they are still decoded.
Take an example where a transaction contains a 20 V amplitude on the bus controller word and 2 V on
the reply words of the remote terminal; a ratio of 2:10.
the reply words of the remote terminal; a ratio of 2:10.
The gain then has to be adjusted to decode the lowest amplitude words (2 V) with a gain of, say, 1 V/div.
While the high amplitude words (20 V) are overflow, they are still decoded.