Specification—2465B/2467B Service
Table 1-2 (cont)
Characteristics
Performance Requirements
DEFINITIONS
A Trigger Level Error = (A Trigger Level Readout Error)/SR
A
.
B Trigger Level Error = (B Trigger Level Readout Error)/SR
B
.
t
r
= rise time, reference trigger signal.
tr
T = rise time, delta trigger signal.
SR
A
= slew rate at trigger point, A Sweep trigger signal in div/sec.
SR
B
= slew rate at trigger point, B Sweep trigger signal in div/sec.
SR
REF
= slew rate at trigger point, reference trigger signal in div/sec.
SR
DELT
= slew rate at trigger point, delta trigger signal in div/sec.
TJE = trigger jitter error.
For delay or delta time, disregarding noise in the signal, this term contributes<1 LSD if the slew rate is greater than
0.03 vertical div/ns or if the slew rate is greater than 30000 vertical div/horizontal div.
Trigger Jitter = [(Reference Trigger Signal Jitter)
2
+ (Delta TriggerSignal Jitter)
2
+ (A Sweep Trigger Signal Jitter)
2
]
1
'
2
.
Reference Trigger Signal Jitter = (e
n
+ e
nRE(r
)/SR
REF
.
= 0 for Frequency mode.
e
n
= scope noise in div.
= 0.05 div for HF REJ trigger coupling.
= 0.1 div for DC trigger coupling, 5 mV to 5 V sensitivity.
= 0.15 div for DC trigger coupling, 2 mV sensitivity.
e
n
= reference signal rms noise in div.
Delta Trigger Signal Jitter = (e
ns
+ e
nDELT
)/SR
DELT
.
= 0 for Frequency or Delay mode.
e
n
= delta signal rms noise in div.
A Trigger Signal Sweep Jitter = (e
ns
+ e
nA
)/SR
A
.
e
n
= A sweep trigger signal rms noise in div.
When the Word Recognizer supplies a trigger in synchronous mode, the trigger jitter of the associated trigger signal
is <1 ns; in asynchronous mode, the associated trigger signal jitter is <20 ns.
N = number of averages during measurement interval.
= see Table
1 -3
for Delay or Delta Time.
= (measured frequency) x (measurement interval) for Frequency or Period.
Measurement Interval = 0.5 s or two periods of measured signal, whichever is greater.
1-18
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