beautypg.com

Step and pulse transients, 5 step and pulse transients – AMETEK Lx Series II Programming Manual User Manual

Page 136

background image

Programming Manual

Lx \ Ls Series II

132

If there are no further pulses, the immediate value remains in effect. In List mode, the functions
return to their immediate value at the completion of the list.

You can mix FIXed, STEP, PULSe, and LIST modes among most functions. When a trigger is
received, each function will react in a manner defined by its mode. However, this is subject to the
following limitation to ensure the proper output voltage in all cases:

The ac voltage, waveform shape, and voltage slew functions cannot be set to Step or Pulse mode
if one of them is set to List mode.

IMMediate level

FIXED mode

Triggers ignored,
output always set to
immediate command
levels.

TRIGered level

IMMediate level

STEP mode

At trigger, the triggered
level becomes the new
immediate level.

TRIGered level

IMMediate level

PULSE mode

At trigger, the triggered
level is active during the
pulse width portion of
the pulse waveform.

IMMediate level

LIST mode

Trigger

Applied

List

Complete

step0

step 1

step 2

At trigger, the list starts.
When list completes,
output returns to
immediate level.

Figure 6-1: Model of transient system.

6.5

Step and Pulse Transients

Proceed as follows to setup step and pulse transients:

1. Set the functions that you do not want to generate transients to FIXed mode. A convenient

way to do this is with the *RST command. Then set the mode of the function that will generate
the transient to STEP or PULSe as required. For example, to enable the voltage function to
generate a single triggered output voltage change, use:

*RST

VOLTage:MODE STEP