a.
Make sure the EEPROM Write Protect function is still enabled.
b.
Apply a value of stable input loading to the source transducer of Channel
No. x. Observe the displayed data value for the channel.
c.
Refer to your customized System 10 Data Sheet and choose a channel
within the current scan range but not currently used by your system. Its
present “TYPE” and “LOCATION” values are not important. We will call
this “Channel No. y.”
d.
Arrange for a “live” display of the data reported by Channel No. y, prefer-
ably on the same display page that displays Channel No. x (see Section
10, Step b, above).
e.
Enter from the keyboard a command of
CLC y = 2(CHN x) [CR]
where “y” is the number of the unused channel selected in Step c and “x”
is the number of the real channel calibrated in Section 10.
Channel No. y’s display should now report a value exactly twice that of
Channel No. x, and with the same precision as was specified for Channel
No. x in Section 10, Step f, above.
f.
Change the input to Channel No. x, and the reading of Channel No. y
should change accordingly.
g.
To change the calculation offset constant from “0” (assumed in the above
command) to “1,” type
CLC y = 2.0(CHN x) + 1.0 [CR]
The reading of Channel No. y should now equal twice the reading of Chan-
nel No. x, plus one. Note that the offset (or “b”) term of the CALCULATE
expression is to be entered with the precision desired for the final “calcu-
lated data” reading. In this case, since this term was entered as “1.0,” res-
olution will be to the nearest tenth of a unit.
Note also that we changed the decimal-point location of the “gain” (or
“m”) coefficient of the CALCULATE expression from “2” to “2.0” in order to
match the resolution of the offset term. It is always recommended that
within a given
CLC
statement the gain coefficient and the offset term be
expressed to the same resolution, as indicated by the decimal-point loca-
tion. This will help prevent erroneous off-scale results. It is also recom-
mended that you set up all of your
CLC
’s to the same decimal-place
resolution. Mixing
CLC
resolutions will tend to slow down the system
scan speed.
h.
You may wish at this time to set up and display a second “real-world” data
channel (call it “Channel No. z”), in order to try out some of the CLC func-
tions that operate on two channels—for example,
CLC y = 2.0(CHN x + CHN z) [CR]
or
CLC y = (CHN x)(CHN z)/2.0 + 1.0 [CR]
A - 17
S
ETUP OF
C
ROSS
-C
HANNEL
C
ALCULATIONS
“O
N THE
A
IR
” (A-S
IZED
)
Summary of Contents for System 10
Page 31: ...GETTING YOUR SYSTEM 10 ON THE AIR SB 2 FOR A SIZED MAINFRAMES...
Page 67: ...GETTING YOUR SYSTEM 10 ON THE AIR SB 2 FOR B SIZED MAINFRAMES...
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