5500A
Operator Manual
4-38
6. The Control Display now shows the amplitude of your temperature output. For
example, 123.456°C (below).
123.456 ~C
7. Press E. The calibrator clears your entry from the Control Display and copies
it into the Output Display (below is typical).
STBY
123.456 ~C
8. Press O to activate the calibrator output.
Four softkey labels appear on the Control Display. Press the OUTPUT softkey to toggle
the rtd selection, displaying the rtd setup menu and four softkey positions.
Note
The temperature you entered above will be cleared to 0
°
C (32
°
F) if you
change between tc (thermocouple) and rtd (resistance temperature
detector), or change the type of rtd. If this occurs, select OUTPUT rtd, the
desired rtd TYPE, and then reenter the temperature following steps 4 to 8.
COMP
off
off
2 wire
4 wire
Output at 5500A
TYPE
pt385
ni120
OUTPUT
rtd
rtd
tc
pt385
NORMAL terminal
pt3926
• Output at 5500A NORMAL terminal. Displays the location of the output
terminals (always NORMAL) for rtd connections.
• TYPE (RTD Type) Selects the rtd curve pt385 (curve, α = 0.00385 ohms/ohm/°C),
pt3926 (curve, α = 0.003926 ohms/ohm/°C), or ni120 (empirical curve).
• OUTPUT (Temperature Output Device) Selects the temperature device:
thermocouple (tc) or resistance temperature detector (rtd). Select rtd.
• COMP (Compensation) Applies 4-wire compensation, 2-wire compensation or
turns compensation off. Compensation refers to methods of connecting the 5500A to
the UUT to cancel out test lead resistance. See “Four-wire versus Two-wire
Connections” earlier in this chapter for more information. For the 3-lead connection
(Figure 4-9) select COMP off.
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