Instruction manual
266 Chapter 12
Specifications and Supplemental Performance Characteristics
Basic Measurement Characteristics
NOTE Time settings Ts, Tt, Tp, Tr and Tm indicated in Table 12-2 are the values taken when the
instrument makes a measurement without receiving any external request (such as user
actions through the front panel keys, keyboard, or mouse) and without performing
non-measurement tasks (such as printout and network connection handling) while the
measurement results display is off.
Table 12-2 Values of Ts, Tt, Tp, Tr and Tm (Typical)
Time [ms]
Ts Measurement condition setup
time
•If the test signal level has changed
*1
crossing -12.95 dBm
or -22.95 dBm since the last measurement cycle: 300 ms
•If the test signal level has changed
*2
without crossing
-12.95 dBm or -22.95 dBm or if there is no level change in
the test signal: see table below.
Tt Trigger delay time
0.0 ms to 1000.0 ms
*3
Tp Measurement point delay time
0.0 ms to 1000.0 ms
*4
Tr Rdc measurement time
2.0 ms
*5
Tm Measurement data acquirement
time
6.9 ms
*6
*1. For example, this can be a level change from -15 dBm to -10 dBm.
*2. For example, this can be a level change from -20 dBm to -15 dBm.
*3. To set this, use the :TRIG:DEL command.
*4. To set this, use the :TRIG:SEQ2:DEL command.
*5. This applies when the offset cancel function is turned off. Add 2 [ms] when the offset cancel
function is turned on.
*6. This applies when the averaging factor is 1. Add 3.9 [ms] for every increase of the averaging
factor by 1.
Table 12-3 Values of Ts (Typical)
Change in test signal frequency
since last measurement cycle
Ts [ms]
No change 0
Increase Change in frequency
crossing 1.73995 GHz
*1
*1. For example, this can be a frequency change from 1.7 GHz to 1.8 GHz.
3.4 + 1 × (f - fp) / 1E9
*2
*2. f: Test signal frequency [Hz] currently in effect, fp: Test signal frequency [Hz] in the
last measurement
Change in frequency
without crossing 1.73995 GHz
*3
*3. For example, this can be a frequency change from 1.8 GHz to 1.9 GHz.
1 × (f - fp) / 1E9
*2
Decrease Change in frequency
crossing 1.73995 GHz
*4
*4. For example, this can be a frequency change from 1.8 GHz to 1.7 GHz.
1.7 + 2 × (fp - f) / 1E9
*2
Change in frequency without
crossing 1.73995 GHz
*5
*5. For example, this can be a frequency change from 1.7 GHz to 1.6 GHz.
2 × (fp - f) / 1E9
*2