Practical Instrument Electronics 535 - Manual (Page 4)

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 4-8
Manual Step and Auto Step/Ramp Parameter
To Change the EZ-Stepä Size:
1. Press and hold the SOURCE/STEP SIZE button for more than ¾ of a second.
2. The display will flash “EZ-STEP SIZE”.
3. Turn the EZ-Dialä knob to select from 2 to 16 steps between the EZ-Checkä limits.
4. Turn the EZ-Dialä clockwise past 16 steps to select continuous ramp mode.
5. Press the SOURCE/STEP SIZE button again to return to the normal display.
Note: If the EZ-Step
ä option is turned off, the display will flash “EZ-STEP OFF”.
To Change the EZ-Stepä Time:
1. Press and hold the UNITS/STEP TIME button for more than ¾ of a second.
2. The display will flash “EZ-STEP TIME”.
3. Turn the EZ-Dialä knob to select from 5 to 900 second ramp time. The time per step is
calculated based on the selected EZ-Stepä size.
4. Press the SOURCE/STEP SIZE button to return to the normal display.
To Change the Soak Time:
1. Press and hold the READ/SOAK TIME button for more than ¾ of a second.
2. The display will flash “SOAK TIME”.
3. Turn the EZ-Dialä knob to select from 0 to 900 second soak time.
Note: A soak time of 0 defeats the soak period. The step time will be used instead.
4. Press the READ/SOAK TIME button again to return to the normal display.
To Change the EZ-Step TM Direction:
1. Press and release the EZ-Dialä knob without turning.
2. The display will change to show the EZ-Stepä direction selected ( or ).
Modes of Operation
Read Milliamp
Connect the Model 535 in series with the process loop to
monitor current. Observe correct polarity. Current
limiting above 24 mA (52 mA if 10-50 range is selected)
is indicated by a flashing “CURRENT LIMITED” display.