Fluke Calibration 8558A, Remote Programmer'S Manual

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8588A/8558A
Remote Programmer's Manual
58
Trigger Subsytem Default Settings
Trigger system default settings are shown in Table 12.
Table 12. Trigger System Default Settings
The default for the INITiate layer is INIT:CONTinuous ON [1]
(The DMM takes and displays readings continuously)
ARM:LAYer2 ARM:LAYer1 Trigger layer
:SOURce :IMMediate :IMMediate :IMMediate
:COUNt 1 1 1
:COUPling DC DC DC
:DELay:AUTO [2] ON ON ON
:DELay [2] 0 0 0
:ECOunt 1 1 1
:EXT FALLing,TTL
[3]
Falling, TTL Falling, TTL Falling, TTL
:FILTer OFF OFF OFF
:HOLDoff:AUTO [4] - - ON
:HOLDoff
[4]
- - 0
:LEVEL
[5]
0 % 0 % 0 %
:SLOPe POSitive [3] Positive Positive Positive
:TIMer 200 ns 200 ns 200 ns
1. INITiate:CONTinuous is set to OFF if
a) the Digitize function is selected
or
b) when the Product is put into remote control
2. 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.
3. 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.
4. :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.
5. 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.