Technical data

Specifications 1
N1911A/1912A P-Series Power Meters Service Guide 15
System Specifications and Characteristics
The video bandwidth in the meter can be set to High, Medium, Low and
Off. The video bandwidths stated in the table below are not the 3 dB
bandwidths, as the video bandwidths are corrected for optimal flatness
(except the Off filter). Refer to Figure 1- 2 for information on the flatness
response. The Off video bandwidth setting provides the warranted rise time
and fall time specification and is the recommended setting for minimizing
overshoot on pulse signals.
For option 107 (10 m cable), add 5 ns to the rise time and fall time specifications.
10
Specified as 10 % to 90 % for rise time and 90 % to 10 % for fall time on a 0 dBm pulse.
11
Specified as the overshoot relative to the settled pulse top power.
Dynamic response - rise time, fall time, and overshoot versus video bandwidth settings
Video bandwidth setting
Parameter Low: 5MHz Medium: 15 MHz High: 30 MHz Off
< 500 MHz > 500 MHz
Rise time/fall
time
10
< 56 ns < 25 ns < 13 ns < 36 ns < 13 ns
Overshoot
11
< 5 % < 5 %