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Specifications and Supplemental Performance Characteristics
Basic Measurement Characteristics
Table 12-1
Value T1 through T (Typical)
Name
T1
Trigger pulse width
T2
Trigger response
time of
Ready_for_Trig
T3
Trigger response
time of INDEX and
EOM
*1
Meas. Time'
T4
Meas. data
T5
calculation time
Ready_for_Trig
setting time
T6
T7
Trigger wait time
*1.1-point measurement, Trigger delay=0, point delay=0
Test condition for "Typical data"
The measurement time of 4287A is scattered to some extent by an overhead of the internal
operation system and other conditions, so it is difficult to define the specification of
handler interface timing. Thus, for your reference, we provide "typical" data on it in Table
13-1 by defining the following test condition.
NOTE
1. The instrument's operating system sometimes suffers interruptions during measurement,
and we sometimes observe an extremely large overhead in handler interface timings. The
table excludes such special cases, thus you can sometimes see timing over the max. value
data shown in the table. If you make a handshake using the READY_FOR_TRIGGER
signal of the handler interface, your test system can continue to work correctly regardless
of such an irregular measurement time drift.
262
Test Condition
Screen Setting
Display
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1-point meas.
Off
Ls-Q meas.
1-point meas.
On
Ls-Q meas.
List Meas. 3-point
On
meas. Ls-Q meas.
-
-
Definition for "typical" data:
Median : Median value of running one minute of measurement data
Max. : Max. value of running one minute of measurement data
Rdc
Compa
Min.
Meas.
rator
2 μs
-
-
-
-
-
-
-
-
Off
-
-
On
-
-
-
Off
-
-
On
-
-
-
-
On
On
-
On
On
-
0
-
0
Timing
Median
Max
-
-
0.3ms
0.5ms
0.4ms
0.6ms
5.7ms
5.9ms
7.5ms
7.7ms
0.3ms
0.4ms
0.4ms
0.4ms
0.1ms
0.3ms
9.8ms
10.2ms
9.8ms
10.2ms
-
Chapter 12
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