User manual

Publication No. 980935 Rev. M 3152B User Manual
Astronics Test Systems Programming Reference 5-67
2. The number of bytes in a complete sequence table must divide by 8. The 3152B has no control over
data sent to its sequence table during data transfer. Therefore, wrong data and/or an incorrect number
of bytes will cause erroneous sequence partitioning to occur.
3. The least significant bit is the only bit used in the advance mode byte. This bit affects the operation of
the sequence only when Mixed Step Advance mode is active. With the LSB bit set to “0”, the sequence
generator advances to the next step automatically. With the LSB bit set to “1”, the sequence generator
advances to the next step only when a valid trigger signal is sensed at the trigger input.
4. The SYNC state bit is valid only when the sync type is BIT
Figure 5-5, 64-bit Sequence Table Download Format
Parameters
Name
Type
Description
<binary_block>
Binary
Block of binary data that contains information on the
sequence table.
SEQuence:ADVance {AUTOmatic|STEP|MIXed}(?)
HS Syntax:
1300A<0|2|3>
Description
This command
select
s the sequence advance mode which is the way in which the instrument advances
through a sequence.
Parameters
Name
Type
Default
Description
AUTOmatic
Discrete
AUTO
Specifies continuous advance where the generator
steps continuously to the end of the sequence table and
repeats the sequence from the start. For example, if a
sequence is made of three segments 1, 2 and 3, the
sequence will generate an infinite number of
1,2,3,1,2,3,1,2,3…waveforms
. Each
sequence step can
be programmed with its own
number of repeats.
STEP
Discrete
In step
ped
advance mode, the sequence is advanced to
the next waveform only when a valid trigger is received.
The output of the 3152B generates the first segment
continuously until a trigger signal advances the