TB 9-6625-2263-24
or
(4) Press READING RATE
pushbutton to select 10/SEC rate.
(5) Set calibrator for a 190 mV output. Adjust DC BUFFER R253 100 mV (fig. 1)
for TI indication between 189.998 and 190.002 mV dc (R).
(6) Press S1 (fig. 2) to select cal digit mode.
DIGITAL PBC
ASSEMBLY
DIGITAL CONTROLLER BOARD
S1
Figure 2. Cal digit switch S1 location.
(7) Set calibrator for a 1.9 V output. Adjust DC BUFFER R251 1V (fig. 1) for TI
indication between 1.89999 4 and 1.90000 6 VD (R).
(8) Press S1 (fig. 2) to return to normal mode.
(9) Press S1 (fig. 2) to select cal digit mode.
(10) Set calibrator to STANDBY and disconnect calibrator from TI.
(11) Short TI V/ INPUT HI and LO. Adjust A/D ANALOG R513 A/D ZERO (fig. 1)
for TI indication between 0.0000 2 and +0.0000 2 VD (R).
(12) Remove short and connect calibrator OUTPUT HI and LO to TI V/
INPUT
HI and LO.
(13) Set calibrator for a 8.1 V output. Adjust A/D ANALOG R522 8 BIT (fig. 1) for
TI indication between 8.0999 8 and 8.1000 2 VD (R).
(14) Set calibrator for a +8.1 V output. Adjust A/D ANALOG R504 NEG REF (fig. 1)
for TI indication between 8.0999 8 and 8.1000 2 VD (R).
(15) Set calibrator for a 4.1 V output. Adjust A/D ANALOG R521 4 BIT (fig. 1) for TI
indication between 4.0999 8 and 4.1000 2 VD (R).
(16) Set calibrator for a 2.1 V output. Adjust A/D ANALOG R520 2 BIT (fig. 1) for TI
indication between 2.0999 8 and 2.1000 2 VD (R).
(17) Set calibrator for a 1.1 V output. Adjust A/D ANALOG R519 1 BIT (fig. 1) for TI
indication between 1.0999 8 and 1.1000 2 VD (R).
7
