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4.6 -
High Speed Output
Mode
Format
(Coat'd)
Jyte
No.
D7
D6
D5
D4
D3
D2
D1
DO
Comments
15
LP11
LP10
LP9
LP8
LT11
LT1G
LT9
LT8
Most
significant four
bits
of long calibration Start
TEC
and Stop
TEC
counters
16
LP7
LP6
LP5
LP
4
LP3
LP2
LP1
LPO
Least
significant
byte
of
long calibration Stop
TEC
counters
17
I
|
DT7
DT6
DT5
DT4
DT3
DT2
DTI
DTO
Least
significant
byte of
delay
calibration Start
TEC
counter
18
DP11 DP10
DP8
DT11
DT10
DT9
DT8
Most
significant four
bits
of delay calibration Start
TEC
and Stop
TEC
counters
19
DP7
DP6
DP5
DP4
DP3
DP2
DPI
DPO
Least
significant
byte
of
delay
calibration
Stop
TEC
counter
4. 7.2.
3
The
Event and
Time
counters are 24-bit binary
numbers
while
each
of the
TEC
counters are
12-bit binary
numbers.
The
following
symbols
will
be used
to
describe
each
of the counters:
Symbol
Description
E
Event
counter
T
Time
counter
TT
TEC
Start
counter
TP
TEC
Stop counter
ST
Short
calibration
TEC
Start
counter
SP
Short
calibration
TEC
Stop counter
LT
Long
calibration
TEC
Start
counter
LP
Long
calibration
TEC
Stop counter
DT
Delay
calibration
TEC
Start
counter
DP
Delay
calibration
TEC
Stop counter
4.
7.2.4
used:
In
order
to
calculate the
measurement,
the following
formulas
must
be
a.
FREQUENCY
= E/(corrected time)
b.
PERIOD
= (corrected time)/E
c.
TIME
INTERVAL
= corrected
delay
time
4-25
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