Table of Contents
Advertisement
C
ALTERNATE PROCEDURE FOR GAINS OUTSIDE OF TABLE 5.1 RANGE
14 Use this procedure if the gain value calculated in step 5 is not
contained within Table 5.1.
15 Insert the result of step 5 into the following formula:
Rgain (ohms) =
Example: Rgain (ohms) = 60,000
16 Obtain the nearest standard 1% resistor value that is closest
to the step 15 result.
Example: 11,857 ohms = 11,800 ohms
17 Open up the Indicator case by removing the four screws which
hold the rear cover in place. (see Figure 3.2)
18 Solder the resistor obtained in step 16 into the Indicator main
circuit board R4 or R5 location. (The main circuit board is the
one with the two 9-position DIP switches located on the board.)
19 Open up all other gain resistors by opening up S1-1 through
S1-7 switches (open is up, closed is down) and also open up
solder switches "B" and "C" and remove push-on jumpers S7
and S8 all on the main circuit board.
20 Select the decimal point location (if desired) by using the
push-on jumpers "Q" through "T" on the display circuit board.
Also select the dummy zero (if desired) by installing the push-
on jumper "U" on the display circuit board.
21 Close the Indicator case by installing the four screws removed in
step 17.
22 Connect your device to the Indicator terminals.
23 Adjust the ZERO and SPAN pots on the Indicator as
necessary to obtain the exact reading you desire.
USTOMIZED
(step 5 result - 4)
S
P
CALING
60,000
(9.06 - 4)
ROCEDURE
= 11,857 ohms
5
17
Advertisement
Table of Contents
