Basic accuracy
1
= ± [(k * Random Uncertainty) + Systematic Uncertainty + Timebase Uncertainty]
Measurement Function
1-σ Random Uncertainty
Systematic Uncertainty
Timebase
Uncertainty2
Frequency
3
Period (parts error)
1.4* (T
SS
2
+ T
E
2
)
1/2
R
E
* gate
If R
E
≥ 2: 10 ps / gate (max), 2 ps / gate (typ)
4
If R
E
< 2 or REC mode (R
E
= 1): 100 ps / gate
●
Option 106 & 115:
Frequency
3
Period (parts error)
1.4* (T
SS
2
+ T
E
2
)
1/2
R
E
* gate
If R
E
≥ 2: 10 ps / gate (max), 2 ps / gate (typ)
4
If R
E
< 2 : 100 ps / gate
●
Frequency Ratio A/B (typ)
5
(parts error)
1.4* Random Uncertainty
of the worst case Freq input
Uncertainty of Frequency A plus Uncertainty
of Frequency B
Single Period
(parts error)
17
1.4* (T
SS
2
+ T
E
2
)
1/2
Period Measurement
T
accuracy
Period Measurement
●
Time Interval (TI)
17
, Width
17
, or
Rise/Fall Time
7,
17
(parts error)
1.4* (T
SS
2
+ T
E
2
)
1/2
|TI Measurement|
Linearity
6
+ Offset
8
|TI Measurement|
Linearity = T
accuracy
Offset (typ) = T
LTE
+ skew + T
accuracy
●
Duty
5, 9, 10, 17
(fraction of cycle error)
2* (T
SS
2
+ T
E
2
)
1/2
* Frequency (T
LTE
+ 2*T
accuracy
)*Frequency
Phase
5, 9, 17
(Degrees error) 2* (T
SS
2
+ T
E
2
)
1/2
* Frequency *
360º
(T
LTE
+skew+2*T
accuracy
)*Frequency*360º
Totalize
11
(counts error) ± 1 count
11
Volts pk to pk
12
(typ)
5 V range
DC, 100 Hz - 1 kHz: 0.15% of reading + 0.15%
of range
1 kHz - 1 MHz: 2% of reading + 1% of range
1 MHz - 200 MHz: 5% of reading + 1% of range
+ 0.3 * (Freq/250 MHz) * reading
Accuracy Specications
Denitions
Random Uncertainty
The RSS of all random or Type-A measurement errors expressed as the total RMS or 1-σ measurement uncer-
tainty. Random uncertainty will reduce as 1/√N when averaging N measurement results for up to a maximum
of approximately 13-digits or 100 fs.
Systematic Uncertainty
The 95% condence residual constant or Type-B measurement uncertainty relative to an external calibration reference.
Generally, systematic uncertainties can be minimized or removed for a xed instrument setup by performing relative
measurements to eliminate the systematic components.
Timebase Uncertainty
The 95% condence systematic uncertainty contribution from the selected timebase reference. Use the appropriate
uncertainty for the installed timebase or when using an external frequency reference substitute the specied uncertainty
for your external frequency reference.
16 | Keysight | 53200A Series RF/Universal Frequency Counter/Timers - Data Sheet