Model 3770
DC STRAIN GAGE PANEL METER
3
Controls
Analog Symmetry, + CAL, - CAL, TARE
S Y M
Symmetry -
Adjust the negative gain slope for symmetrical analog adjustment and display
reading with reference to the positive span value. 20 Turn potentiometer, with approx. ± 2%
full scale authority
+ C A L
Positive Calibration –
Activates the SHUNT Positive by switching in the external or internal
shunt calibration resistor across the Cal Sense and + Sense leads of the bridge.
- C A L
Negative Calibration –
Activates the SHUNT Negative by switching in the external or
internal shunt calibration resistor across the Cal Sense and - Sense leads of the bridge.
TARE
TARE -
Push / Push switch. When enabled, offsets the present sensor signal input to "Zero".
When activated, a green LED light will illuminate. During activation process, LED will light
Yellow. If disabled, or out of range, LED will be RED. TARE maybe remotely activated via
rear J1 connections. Front panel TARE can be disabled via J1 Pin 5connected to Logic
Common, Pin 6. Maximum TARE capability is approx. 60% of full scale reading.
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