Tektronix 2430 - Page 16

REV APR 1988
1-6
dA stable trigger is one that results in a uniform,regular display triggered on the selected slope. The trigger point must not switch
between opposite slopes on the waveform, and the display must not"roll" across the screen on successive acquisitions. The
TRIG'DLED stays constantly lit when the SEC/DIVsetting is 2 ms or faster, but may flash when the SEC/DiVsetting is 10 ms
or slower.
Minimum poP Signal Amplitude for Stable
Triggering from Channel 1, Channel 2, or AD[)d
A Trigger
DC Coupled
0.35 division from DC to 50 MHz, increasing to 1.0 division at
150 MHz; 1.5 divisions at 150 MHz in ADD mode.
NOISE REJ Coupled 1.2 divisions or less from DC to 50 MHz, increasing to 3 divisions
at 150 MHz; 4.5 divisions at 150 MHz in ADD mode.
AC Coupled 0.35 division from 60 Hz to 50 MHz; increasing to 1.0 division at
150 MHz, 1.5 divisions at 150 MHz in ADD mode. Attenuates sig-
nals below 60 Hz.
HF REJ Coupled
0.50 division
from
DC to 30 kHz.
Attenuates signals above
30 kHz.
LF REJ Coupled 0.50 division from 80 kHz to 50 MHz; increasing to 1.0 division at
150 MHz; 1.5 divisions at 150 MHz in ADD mode. Attenuates siq-
nal below 80 kHz.
B Trigger Multiply all A Trigger specifications by two.
A-B Selected
Multiply all A Trigger specifications by two.
Minimum pop Signal Amplitude for Stable Triggering
from EXT TRIG 1 or EXT TRIG 2 Source
A Trigger
EXT Gain = 1
DC Coupled 17.5 mV from DC to 50 MHz, increasing to 50 mV at 150 MHz.
NOISE REJ Coupled 60 mV or less from DC to 50 MHz; increasing to 150 mV at 150
MHz.
AC Coupled
17.5 mV from 60 Hz to 50 MHz; increasing to 50 mV at 150 MHz.
Attenuates signals below 60 Hz.
HF REJ Coupled 25 mV from DC to 30 kHz.
LF REJ Coupled 25 mV from 80 kHz to 50 MHz; increasing to 50 mV at 150 MHz.
EXT Gain =
-.;..5
Amplitudes are five times those specified for Ext Gain = 1.
B Trigger
Multiply all A Trigger amplitude specifications by two.
A-B Selected
Multiply all A Trigger amplitude specifications by two.
Maximum Pop Signal Rejected by NOISE REJ
Coupling Signals within the Vertical Bandwidth
Channel 1 or Channel 2 Source
0.4 division or greater for VOLTS/DIV settings of 10 mV and
higher.
Maximum noise rejected is reduced at 2 mV per division and
5 mV per division.
EXT TRIG 1 or EXT TRIG 2 Source
20 mV or greater when Ext Trig Gain = 1. 100 mV or greater
when Ext Trig Gain = -.;..5.
TRIGGERING-A AND B
PerformanceRequirements
Characteristics
Table 1-1 (cont)
Specification-2430 Service