Practical Instrument Electronics 521 - Manual (Page 2)

Model 520/521
Operating Instructions
Model 520/521 Configuration
Model 520/521 Configuration Menu
Auto Off
ON (default)/OFF
If Auto Off is ON, the unit will turn off after 30 minutes to save battery life, if there is no user activity. If
Auto Off is OFF the unit will stay on until it is turned off from the keypad. This is typically useful for
manual loading or continuous use.
Display
Units °C (default)/°F
Pressing the EZ-Dial Knob to toggles between °C or °F
T/C
{T/C type}
Model 520: The T/C type is fixed as
ordered from the factory and cannot be
changed.
{T/C type} is one of:
B, E, J, K, N, R, S, T, or mV
Model 521: To change T/C type, press
the EZ-Dial Knob. Turn the EZ-Dial
Knob to scroll through the list of available
types. Press again to save and return to
the configuration menu.
{T/C type} is any of:
B, E, J, K, N, R, S, T, or mV
EZ-Dial™ Knob
Turning the EZ-Dial Knob to adjust the output up or down. Fine adjustments can be made by turning the
EZ-Dial Knob. Coarse adjustments can be made by pressing and turning the EZ-Dial™. New values can
be stored into the HI and LO EZ-Check™ positions by pressing down on the EZ-Dial Knob until “STORED”
is indicated on the display.
EZ-Check™ Switch
The EZ-Check™ Switch has three positions: HI, DIAL, and LO. Its position is shown at the left edge of the
display with “HI” and “LO” indicators. The output is adjustable in all three positions. The EZ-Check™
Switch allows user-selected values to be stored in the HI and LO positions when used in combination with
the EZ-Dial Knob.
To store new EZ-Check™ value(s):
1. Dial the display to match the desired stored outputs for the HI or LO positions.
2. Press down on the EZ-Dial Knob until the confirmation message “STORED” appears.
3. Recall the values by moving the switch between HI, DIAL, and LO.
Operational description: When returning to previously set EZ-Check™ positions, the DIAL position always
recalls the last output value it was dialed to. The HI and LO positions will recall the last STORED value,
NOT the last output value it was last dialed to.
Hint: For faster calibrations, the product has been designed so the position of the switch can be felt. This
tactile feature allows continuous monitoring of the device being calibrated without looking back at the
Model 520/521 display. This is also useful in poor lighting or under difficult operating conditions.
841 Holt Road #1 • Webster, NY 14580 Tel: 585-872-9350 • Fax: 585-872-2638 [email protected] • http://www.piecal.com/
Practical Instrument Electronics, Inc. Copyright  2003. All rights reserved. 520/521-9002 2/25/04 2-4