Extech Instruments PRC70, User Manual

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Page 6 PRC70-EN-V2.1 12/11
5.2 Keys
Figure 3 lists the calibrator’s function keys and Table 4 explains their use.
Figure 3 – Calibrator Function Keys
Table 4 – Function Key Descriptions
No. Name Function
1~5 Source value set key Increment source set point
6~10 Source value set key Decrement source set point
11 Measurement ON key Switch measurement functions ON or OFF
12 Source ON key Switch source function ON or OFF
13 Power key Switch the power ON or OFF
14 Backlight Switch the backlight ON or OFF
15 Measurement FUNC Key Select measurement function
16 Source FUNC Key Select source function
17
TEMP Key
Switch room temperature monitoring function ON or OFF
In TC source or measurement mode, switch the RJ compensation ON/OFF
18 ZERO Key Set the source value to zero-point; In pulse source function, set the pulse number.
19 Measurement RANGE Key Select measurement range; Measurement mA and percentage shifting.
20 Source RANGE Key Select source range; Source mA and percentage shifting.
21 AVG Key Measuring average value
22
25/100% key
In mA source function, select 25% or 100% manual step output mode.
In pulse number, frequency or switch source, set the frequency value.
23 HOLD Key Freeze measured value
24
START Key
Source auto-pulse number, switch ON mA auto-stepping or sweeping function.
Convert sourced TC temperature and mV, and sourced RTD temperature and Ohms.
25 LOOP Key 24v Loop circuit power: Convert the measured TC temperature and the mV, the
measured RTD temperature and the Ohms.
26
Key
In DCmA source mode, select auto-wave; In frequency/pulse source mode, set
amplitude