Tektronix 2445B - Triggering Performance Specifications

Performance Characteristics
Table 6-1 (cont)
Characteristics
Vertical Signal Delay
Chopped Mode Switching Rate
Performance Requirements
At least 30 ns of the sweep is displayed before
the triggering event is displayed at any SEC/DIV
=*10 ns/div. At 5 ns/div, at least 10 ns of the
sweep is displayed before the triggering event.
With displayed SEC/DIV in the 20 MS to 2
M
s/div
range, the switching rate is 2.5 MHz ±0.2%.
Otherwise, the switching rate is 1 MHz ±0.2%.
The display cycle rate equals the chop switching
rate divided by the number of channels
displayed. The chop switching rate is modulated
slightly to minimize waveform breaks with
repetitive signals,
TRIGGERING
Minimum P-P Signal Amplitude for
Stable Triggering from Channel 1 or
Channel 2 Source
2465B and 2455B
DC Coupled
NOISE REJ Coupled
AC Coupled
0.35 division from dc to 50 MHz; increasing to
1.0 division at 300 MHz and 1.5 divisions at
500 MHz.
<1.2 divisions from dc to 50 MHz; increasing
to 3 divisions at 300 MHz and 4.5 divisions at
500 MHz.
0.35 division from 60 Hz to 50 MHz; increasing
to 1.0 division at 300 MHz and 1.5 divisions at
500 MHz. Attenuates signals below 60 Hz.
HF REJ Coupled | 0.5 division from dc to 30 kHz.
LF REJ Coupled 0.5 division from 80 kHz to 50 MHz; increasing
to 1.0 division at 300 MHz and 1.5 divisions at
500 MHz.
2445B
DC Coupled 0.35 division from dc to 50 MHz; increasing to
1.5 divisions at 250 MHz.
NOISE REJ Coupled *s1.2 divisions from dc to 50 MHz; increasing
to 4.5 divisions at 250 MHz.
2465B/2455B/2445B Operators
6-7