Racal Instruments 2461 User Manual page 168

User Manual 2461 Type C
Ratio 1/2
Function
Displays the ratio of the frequency at INPUT 1 to the frequency at INPUT 2, i.e.
Frequency1/Frequency2 (1 divided by 2).
Ratio Range
Frequency 1 and frequency 2 can each be in the range 6 x 10
LSD
For 6-10 digits selected:
10
(Rounded to nearest decade) (Subject to Notes (i) and (ii))
Frequency2 x GateTime
For 3-5 digits selected:
As above; or Ratio X 10
lesser value.
Resolution
(
± LSD ±
1 4 . x Channel
GateTime
Accuracy
±Resolution (higher frequency applied to INPUT 1)
Time Interval (Separate or Common)
Time Range
Common Mode
Separate Mode
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-(D+2)
(where D = Number of digits selected) whichever gives the
)
2 Trigger Error
x Ratio
5ns to 8 x 10
0ns to 8 x 10
-4
Hz to 100MHz.
(subject to Notes (i) & (ii))
5
s
5
s
A-9