CALIBRATION
(cant)
The
following
operations result in an amplitude calibration
of
the
new
function:
-FUNCTION
key
or
"FU''',
"FU2"
or
"FU3"
-RECALL 0
through
5 if a
new
function
is recalled
-ARB
entry
(no measurement) or
exit
You
cannot
force
the
3314A
to
only measure amplitude calibration
constants
from
the
front
panel
while
calibration measurements are disabled. From the HP-IB,
"CEFUxCD"
(where x = the
number
of
the
current
function),
will
enable calibra-
tion
measurements, execute an amplitude calibration and
then
disable calibration
measurements.
Frequency Calibration
Frequency calibrations
occur
whenever
the
frequency range changes. During
calibration measurements,
the
sync
output
is
active
(output
is a
TIL
level
squarewave
at
the
calibration frequency).
8
7
6
6
4
3
2
1
30
mil
30
mil
30
mil
30
ms
30
mil
100
ms
500
mil
500
ms
< 1
6mVp-p
at the programmed frequency
<1
5mVp-p
at
the
programmed frequency
< 1SmVp-p at
100kHz
< 1
5mVp-p
lit
10kHz
< 1
6mVp-p
at 1kHz
<
16mVp-p
at
199
.9Hz
< 1
5mVp-p
lit
•
< 1
5mVp-p
at •
• The
3314A
makes 7 measurements at various fr0QU8ncles to compute the calibration constants for ranges
1
and
2.
The
following
operations result in a
frequency
calibration
of
the
new
frequency
range:
-During
frequency
entry
when
a range change occurs
-At
mode
changes
-RECALL 0
through
5
-Fixad
to
variable
symmetry
-Variable
symmetry
exit
-Preset
symmetry
(BLUE
shift
SYM)
-Preset
frequency
(BLUE
shift
FREQ)
-Sweep
entry
(no measurement) or
exit
-ARB
entry
(no measurement) or
exit
-VCO OFF
to
ON while in ranges 7 or 8
49