TECPEL CL-327A Manual page 22

proportional to the preset resistance R between the output terminals, and thus producing the equivalent
resistance R =V/I. Consequently, the calibrator sources the signal correctly only for such devices that
employ this method of measurement.
 The allowable range of the resistance measuring current I that the calibrator receives from a resistance
measuring device under calibration is rated as 0.1 mA to 3 mA. To ensure accuracy, the resistance
measuring current I from the device under calibration shall be strictly confined within the range. For further
details, see Chapter 14, "Specification".
 Any resistance signal being sourced does not include the resistance component of the lead cables for
source. The whole resistance, when measured at the ends of the lead cables for source, is given by
adding the resistance of the lead cables (approximately 0.1Ω on a round-trip basis) to the sourced
resistance signal. For source of precise resistance signals, use three-wire or four-wire connection.(See
figure 10)
 If capacitance between the terminals of a device under calibration is greater than 0.1ųF, the calibrator may
fail to source correct resistance signals.
Step 1: Using the〔OHM〕key, select Ohm function. Using the 〔RANGE〕key, select the desired range. The
selected function and the default range source value and unit shall be shown in
the main districts part of the LCD.
Step 2 :Set the output value digit by digit using each pair of〔〕
keys.
Each pair of 〔 〕 / 〔 〕 keys corresponds to each digit of the LCD
reading. Each press of the 〔〕 / 〔 〕 key increases or decreases
/〔〕
the
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