TESTO 6681 Instruction Manual page 37

 Analog outputs 1 and 2 adjusted

A precise multimeter (minimum resolution of 6.5 digits, accuracy of
µ
100 A, e.g. Agilent 34401A) is available.
If only a simple multimeter is available, the analog outputs
may not be adjusted.

The service flap is open.
1 Connect the inputs of the multimeter with the contacts (2) and (3) for
channel 1 or with contacts (7) and (8) for channel 2.
2 Transfer the reference analog value measured with the multimeter to
the P2A software (see volume 2, chapter 3) or enter it via the user
menu (see chapter 1.4.6.9).
3
Disconnect connections between multimeter and contacts of the
testo 6681 and close service flap.
 Adjusting analog output 3 (optional)
If the optional third analog output is to be adjusted, a cable
connection to measure the analog value must be installed.
Do this by proceeding as follows:
1 Open transmitter (see chapter 1.3.2).
2 Connect measuring cable to the terminals of the third analog output
and guide through the cable coupling and out of the transmitter.
3 Reassemble upper part of transmitter (see chapter 1.3.2.6).
4
Connect cable ends to the inputs of the multimeter.
5
Transfer the reference analog value measured with the multimeter to
the P2A software (see volume 2, chapter 3) or enter it via the user
menu (see chapter 1.4.6.9).
6
Remove the upper part of the transmitter, detach the cable
connections for the adjustment of the 3rd analog output and
reassemble the transmitter.
testo 6681
- 1.3 Commissioning 37