Tektronix 455, Instruction Manual, Page: 20 / 246

Specifications—455/A2/B2
TABLE 1-5
Electrical (B2 Horizontal Module)
Characteristic
Performance Requirement Supplemental Information
TRIGGERING
Sensitivity
(See Fig. 1-2) In EXT -r 10, m ultiply requirements
by 10.
AC Coupled
0.4 div internal or 50 mV external from
60 Hz to 10 MHz increasing to 1.5 div
internal or 250 mV external at 50 MHz.
LF REJ Coupled
0.4 div internal or 100 mV external from
50 kHz to 10 MHz (increasing to 1.5 div
internal or 250 mV external at 50 MHz.
Attenuates signals below about 50 kHz.
HF REJ Coupled 0.4 div internal or 100 m V external from
60 Hz to 50 kHz. Attenuates signals below
about 60 Hz and above about 50 kHz.
DC Coupled
0.4 div internal or 50 mV external from
dc to 10 MHz increasing to 1.5 div in­
ternal or 250 mV external at 50 MHz.
Trigger Jitter (A t 50 MHz and
5 ns/div)
0°C to +40° C
0.5 ns or less.
—15°C to +55°C
1.0 ns or less.
REV. A. O C 1975
1-7
Fig. 1-2. Trigger coupling and sensitivity.