Farnell TOPS 3D - Page 16

12
9. Reconnect load across + 17V terminals, depress + 17V push
buttons and adjust P6 (cal + 17V) until current meter reads
the
same
as
reference
meter tO
within
1
digit.
10. Connect the load in series with reference to the ammeter +6V
terminals and adjust for a ioad current of 3.90 amps.
11. Depress + 6V push button and adjust P4 (cal l +6V) until
TOPS 3D current meter reads the same as the reference
meter to within 1 digit.
12. Remove load and ammeter.
The display board and control board are now calibrated.