Auto step/ramp, Quick reference bar graph, Model 535 operating instructions – Practical Instrument Electronics 535 User Manual
Page 3: Figure 1
Model 535 Operating Instructions
82 E. Main Street Suite 3.14 · Webster, NY 14580
Tel: 585-872-9350 · Fax: 585-872-2638
[email protected] · http://www.piecal.com/
Practical Instrument Electronics, Inc. Copyright ã 2011. All rights reserved.
535-9002 Rev G 7/13/11
3-8
Auto Step/Ramp
Press the EZ-Stepä pushbutton for more than one second to activate auto step/ramp mode. The Model 535 will automatically step by
the selected EZ-Stepä size and time. Press the EZ-Stepä pushbutton again to deactivate auto step/ramp mode.
The EZ-Stepä direction is indicated on the display (
or
). Press the EZ-Dialä knob to change the step direction. The step
direction can be changed while automatically stepping/ramping.
Stepping and auto step/ramp limits are defined by the EZ-Checkä HI and LO settings. The step direction changes when a limit is
reached.
Figure 1 will show how the Step/Ramp Parameters are used to configure automatic stepping/ramping.
Figure 1
0
4
8
12
16
20
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
time
mA
Note: The Model 535’s ability to detect overload/undervoltage conditions may be limited by the rate of change in the output when
using automatic stepping/ramping. Turn auto step/ramp off while connecting or disconnecting the Model 535.
Quick Reference Bar Graph
The Quick Reference Bar Graph indicates the input and output level on the Model 535 in % of 4-20/10-50 mA with 1% resolution.
ramp
time
soak time
step size = (EZ-Step HI – EZ-Step LO)
¸
# of steps
step time = ramp time
¸
# of
t