HT instruments HT8051 - Manual (Page 12)

HT8051
EN - 11
4.3.4. DC Current generation
CAUTION
 The maximum output DC current generated on passive circuits is 24mA
 With set value  0.004mA the display blink intermittently to indicate no
signal generation when the instrument is not connected to external device
Fig. 6: DC current generation
1. Press the MODE key and select the measuring mode SOUR mA. The symbol “SOUR”
is shown on the display
2. Define a measuring range between 0-20mA and 4-20mA (see § 4.2.7).
3. Use the adjuster knob (see § 4.2.6), the 0-100% key (see § 4.2.2) or the 25%/
key
(see § 4.2.3) to set the desired value of output current. The maximum value available is
24mA. Please consider that -25% = 0mA, 0% = 4mA, 100% = 20mA and 125% =
24mA. The display shows the value of current. If necessary, use the
key (see §
4.2.5) to generate DC current with automatic ramp.
4. Insert the green cable into the input terminal Loop and the black cable into the input
terminal mV/V
5. Position the green lead and the black lead respectively in the points with positive and
negative potential of the external device which must be supplied (see Fig. 6)
6. To generate a negative current value, turn the measuring leads in the opposite
direction with respect to the connection in Fig. 6