Fluke 744 Fluke 744 Users Manual - Page 56

Using Source Mode, Sourcing Electrical Parameters - test leads

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744 Users Manual Using Source Mode The operating mode (i.e., MEASURE, SOURCE) is shown in a reverse-video bar on the display. If the calibrator is not in SOURCE mode, press M until SOURCE is shown. You must be in SOURCE mode to change any of the SOURCE parameters. Sourcing Electrical Parameters To select an electrical sourcing function, proceed as follows: 1. Connect the test leads as shown in Figure 16, depending on the source function. 2. Press M for current, v for dc voltage, h for frequency, or q for resistance. 3. Enter the desired output value, then press e. For example, to source 5.0 V dc, press v 5 . 0 e. 46 Note If you are sourcing frequency, respond to the display prompt to select a zero-symmetric sine or positive square wave. The amplitude you specify is p-p amplitude. 4. To change the output value enter a new value and press e. Note If you are sourcing current, wait for the g symbol to go out before you use the output. 5. To set the output value to 0 in the present source function, press c. 6. To turn off sourcing completely, press c twice. Note Use the source current function to drive a current loop. This is different than the loop power function in which the calibrator is powering a process instrument. To source loop power, use the Loop Power function accessible from Setup mode.

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744
Users Manual
46
Using Source Mode
The operating mode (i.e., MEASURE, SOURCE) is
shown in a reverse-video bar on the display. If the
calibrator is not in SOURCE mode, press
M
until
SOURCE is shown. You must be in SOURCE mode
to change any of the SOURCE parameters.
Sourcing Electrical Parameters
To select an electrical sourcing function, proceed as
follows:
1.
Connect the test leads as shown in Figure 16,
depending on the source function.
2.
Press
M
for current,
v
for dc voltage,
h
for frequency, or
q
for resistance.
3.
Enter the desired output value, then press
e
. For example, to source 5.0 V dc, press
v
5
.
0
e
.
Note
If you are sourcing frequency, respond to the
display prompt to select a zero-symmetric
sine or positive square wave. The amplitude
you specify is p-p amplitude.
4.
To change the output value enter a new value
and press
e
.
Note
If you are sourcing current, wait for the
g
symbol to go out before you use the output.
5.
To set the output value to 0 in the present source
function, press
c
.
6.
To turn off sourcing completely, press
c
twice.
Note
Use the source current function to drive a
current loop. This is different than the loop
power function in which the calibrator is
powering a process instrument. To source
loop power, use the
Loop Power
function
accessible from Setup mode.