Trigger Subsytem Default Settings - Fluke Calibration 8588A Remote Programmer's Manual

8588A/8558A
Remote Programmer's Manual

Trigger Subsytem Default Settings

Trigger system default settings are shown in Table 12.
:SOURce
:COUNt
:COUPling
:DELay:AUTO
:DELay
:ECOunt
:EXT FALLing,TTL
:FILTer
:HOLDoff:AUTO
:HOLDoff
:LEVEL
:SLOPe POSitive
:TIMer
1. INITiate:CONTinuous is set to OFF if
2.
3.
4.
5.
58
Table 12. Trigger System Default Settings
The default for the INITiate layer is INIT:CONTinuous ON
(The DMM takes and displays readings continuously)
[2]
[2]
[3]
[4]
[4]
[5]
[3]
a) the Digitize function is selected
or
b) when the Product is put into remote control
The:DELay:AUTO ON setting in the ARM2 and ARM1 layers is zero seconds. in the
trigger layer, :Delay:AUTO ON provides a dynamic delay to allow settling after a configuration
change to ensure a valid measurement is obtained. The actual delay depends on the change to
function, range or signal coupling path. The Delay is zero once the settling period has expired. Set
:DELay to 0 and :DELay:AUTO OFF if the time between receipt of a trigger and start of acquisition
is critical. When the setting is TRIGger:DELay:AUTO OFF, it is the users responsibility to wait an
appropriate period between an instrument configuration change and issuing a trigger. Alternatively,
:DELay can be set to an appropriate non-zero value but that delay period will be implemented after
every trigger event.
When :SOURce is :EXTernal, the type of edge can be rising or falling, TTL or Bipolar. These two
parameters are common for all three event layers. If a parameter is changed in one layer, the
change also applies in the other two event layers.
:HOLDoff is a Trigger layer only setting. :HOLDoff:AUTO ON pauses the trigger cycle until the
acquisition is complete. TRIGger:HOLDoff:AUTO OFF causes the trigger cycle to pause for the
:HOLDoff value setting which can be between 0.000 000 0 and 100 seconds. The setting
resolution of HOLDoff is 100 ns up to 1 ms and 1 ms from 1 ms up to 100 seconds.
When :SOURce is :INTernal, :LEVel sets the point (level) on the input waveform the trigger event
will occur. If :LEVel is changed in one layer, the change also applies in the other two event layers.
:LEVel may be set between -200 % and +200 % of Range.
ARM:LAYer2
:IMMediate :IMMediate
1 1
DC DC
ON ON
0 0
1 1
Falling, TTL Falling, TTL
OFF OFF
- -
- -
0 % 0 %
Positive Positive
200 ns 200 ns
[1]
ARM:LAYer1 Trigger layer
:IMMediate
1
DC
ON
0
1
Falling, TTL
OFF
ON
0
0 %
Positive
200 ns