Tektronix 7B80 Instruction Manual page 21

Trigger Holdoff Time
TABLE
2-1 (CON?.!
Electrical Character~st~cs
Minimum Holdoff Setting
I
Characteristic
5
s1Div to
1
ps1Div
/
2 times TIMEIDIV setting or less.
Performance Requirement
0.5
ps1Div to
10
ns1Div
2.0
ps or less.
I
TRIGGERING
Variable Holdoff Range
Triggering Sensitivity from Repetitive Signal (Auto.
Norm and Single Sweep Modes)
Coupling
AC
Extends holdoff time through at least
2
sweep lengths for
sweep rates of
20
msldiv or faster.
AC HF REJ
D C ~
Triggering Frequency
~ a n ~ e '
Minimum Triggering
Signal Required
30 Hz to 50 MHz
50 MHz to 400 MHz
30
kHz to
50
MHz
50 MHz to400 MHz
30 Hz to 50 kHz
Dc to 50 MHz
50 MHz to 400 MHz
Internal
0.3
div
1.5 div
0.3
div
1.5 div
0.3 div
0.3 div
1 . 5 div
External
50
mV
250 mV
- - - -
Internal Trigger Jitter
External Trigger lnput
Maximum lnput Voltage
lnput R and C
Level Range (Excluding P-P AUTO)
EXT
+
1
EXT+
10
250 V (dc plus peak ac).
1 Mi2 within
5%, 20
pF within
10%.
(Checked on
1
kHz sine wave.)
A t least
+
and
-1.5
volts.
At least
+
and -1 5 volts.
- - - - - - - - - - -
P-P AUTO Operation Sensitivity (Ac or Dc Coupling)
Low Frequency Response
Triggering Frequency
Range
200
Hz to
50
MHz
50 MHz to400 MHz
A t least 50 Hz
0.5
div
1 . 5 div
2.0 div
Minimum Triggering
Signal Required
'The triggering frequency ranges given here are limited to the
-3 dB
frequency of the oscilloscope vertical system (mainframe and amplifier
unit) when operating from an internal source.
Will not trigger on sine waves at or below 60 Hz when amplitudes are less than 8 divisions internal or 3 volts external.
'The Triggering Frequency Range for DC COUPLING applies to frequencies above 30 Hz when operating in the AUTO TRIGGERING MODE.
Internal
@
Scans
by
ArtekMedia O 2006
External