Cooper Instruments & Systems DFI INFINITY Digital Force Indicator/Controller - Manual (Page 22)

1.6 mA meter excitation (S2P, S2V)
NOTES: 1) Maximum excitation for “Ratiometric” measurement is 10 Vdc.
2) Remove the “S2T” jumper when you use external sensor excitation.
6.4.1 Jumper Settings for Sensor Excitation –ac Powered Unit
Your ac-powered meter is capable of supplying either 1.5 to 11 Vdc or 24 Vdc sensor excitation. (refer to Figure 6-
2).
• For 1.5 to 11 Vdc, install S4A and C jumpers, then adjust the potentiometer (R39) for proper voltage.
• For 24 Vdc excitation, remove S4A and C jumpers and install S4B.
Figure 6-2. ac-Powered Main Board Jumper positions S3 and S4
S4 On ac-powered units, main board
S4A & S4C
Installed For 1.5 to 11 Vdc excitation
S4B Installed For 24 Vdc excitation
S3 On ac-powered units, main board
S3A
Installed Unlocks “MENU” button for programming
S3B Omit
S3C Installed Unlocks lockout menu
NOTE: S3B (the middle jumper) should NOT be installed. This jumper is only used when recalibrating the meter
(e.g. an annual, careful performance by the calibration lab). When this jumper is installed, calibration coefficients
can be changed via digital communications.
6.4.2 Jumper Settings for Sensor Excitation – dc Powered Unit
Your dc-powered meter is capable of supplying either 1.25 to 12 Vdc or 24 Vdc sensor excitation. (Refer to Figure
6.3)
• For 1.25 to 12 Vdc excitation, install SA and S4A jumpers, then adjust the potentiometer (R34) for proper
voltage.
• For 24 Vdc, remove the S4A jumper s and install S1B.
CF 67 17 M1291/N/0403 11279ML-02 Rev. A