Racal Instruments 1994 Service Manual page 27

Universaltimer/counters
Table of Contents

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Table
1.1 -
1994
Specifications (Cont'd)
Resolution:
Accuracy:
(± 2
x
LSD)
±
1.4
x
Trigger Error x Period
Gate
Time
(see
note
2)
± Resolution ±
Timebase
Error x Period
TIME
INTERVAL
MEASUREMENT
1
Input
Configuration:
Separate:
Input
A
start/Input
B
stop,
Input
B
start/Input
A
stop
(via
Special
Function
21)
Common:
Input
A
start/Input
A
stop
Time
Range:
c
-2
ns
to
8
x
10
a
s
(i.e.,
stop signal
can occur up
to
2
ns
before the
start
signal)
Trigger
Slopes:
Start, positive or
negative
Stop, positive or
negative
LSD
Displayed:
1
ns (100 ps using
averaging)
Resolution:
+
LSD
+
1
ns
rms
±
start trigger error ±
stop trigger
error
(see
note
2)
Accuracy:
1
i
± resolution +
timebase
error
x
TI + trigger level
timing
error (see
note
2)
+
trigger level setting error
(see
note
2)
+
2
ns
(i.e.,
differential
channel delay
error
-
see note
2)
TOTALIZE
A
BY
B
f
Input
Channel:
Input
A
(100
MHz
max.
frequency)
Maximum
Rate:
10°
events/s
Range:
1
to
10
18 -1
Pulse Width:
5
ns
min.
at trigger points
1-9

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