b. Enter a command of
ZRO 1 = z [CR]
where "z" is the numerical value of the known input, with
appropriate polarity (in the "zero input" case, z = 0). This
command establishes the channel's ZERO OFFSET (i.e., the
"b" term of its "y = mx + b" equation).
c. To switch in the shunt resistor for a
positive
up-scale reading,
enter a SHUNT CALIBRATE—POSITIVE (SHP) command of
SHP = ON [CR]
To switch in the resistor for a
negative
reading, enter a SHUNT
CALIBRATE—NEGATIVE (SHN) command of
SHN = ON [CR]
d. Now command
FRC 1 = X [CR]
where "X" is the known EQUIVALENT INPUT produced by the
shunt, with appropriate polarity.
e. Before Channel 1 can resume normal measurement, its shunt-
calibration switch must be opened. If it has been closed for a
positive up-scale reading, command
SHP = OFF [CR]
—and if for a negative reading, command
SHN = OFF [CR]
---------- NOTE ----------
Like all 4000 Series instruments, the 4077 permits calibration of
a relatively
nonlinear
input by setting up an internal LINEARIZA-
TION TABLE of up to 15 "segments." The procedure is given in
the optional
System Instruction Manual.
E.3
App. E "Computed" and "Simulated" Calibration
To Next Page
Loading...
Need help?
General
