Fluke 74X Series, Руководство по калибровке

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74X Series
Calibration Manual
20
Simulate Transmitter Function
Proceed as follows to verify the Simulate Transmitter function (accessed through DC
Current Source function):
1. Connect the UUT, HP3458A, and 5500A as shown in Figure 8. The 5500A is used as
a stable dc voltage source. Its value is not critical, and another dc source such as a
battery can be substituted.
2. Set the 3458A [NPLC] to 30, and the function to [DC Current].
3. Set the UUT to the [mA Source] function, then select Simulate Transmitter .
4. Set the UUT source value to 4 mA.
5. Set the 5500A to output 4V dc.
6. Observe that the reading on the 3458A is within the range shown in Table 10.
7. Change the UUT source value to 22 mA and check the results again in Table 10.
8. Set the 5500A to [STANDBY], and press
c
twice on the UUT to turn the Source
function off. This saves battery life.
TC
mA mA V V
RTD
RTD
SOURCE 300V
MAX 30V
MAX
30V
MAX
30V
MAX
MEAS
CAT
FLUKE 74X
Ω
SENSE INPUT
HI
LO
GUARD
HI
LO
HP3458
20V PK
MAX
HI
LO
TC
TRIG
OUT
1000V
RMS
MAX
20V
RMS
MAX
1V PK
MAX
20V PK
MAX
NORMAL AUX SCOPE
V, ,
RTD
A, -SENSE,
AUX V
200V PK
MAX
FLUKE 5500A CALIBRATOR
gb09f.eps
Figure 8. Simulate Transmitter Verification Connections
Table 10. Simulate Transmitter Verification Points
Range Output Minimum 1 & 2 Year Maximum 1 & 2 Year
22 mA 4 mA 3.9926 4.0074
22 mA 22 mA 21.9890 22.0110