Tektronix 2230 Operator's Manual

General lnformation-2230 Operators
Table 1-1 (cont)
Characteristics
Performance Requirements
TRIGGERING SYSTEM
A Trigger Sensitivity
P-P AUTO and NORM
10 MHz
60 MHz 100 MHz
Internal
0.35 div 1.0 div 1.5 div
External
40 mV 120 mV
150 mV
External trigger signal from a 50 fl source driving a 50 fl coaxial
cable terminated in 50 fl at the input connector.
HF REJ Coupling
Reduces trigger signal amplitude at high frequencies by about
20 dB with rolloff beginning at 40 kHz ± 15 kHz.
Should not trigger with a one-division peak-to-peak 250 kHz sig-
nal when HF REJ is ON.
P-P AUTO Lowest Usable Frequency
20 Hz with 1 division internal or 100 mV external.
TV LINE
Internal
0.35 div.
External
35 mV p-p.
TV FIELD
;,, 1 division of composite sync.
B Trigger Sensitivity (Internal Only) 10 MHz 60 MHz 100 MHz
0.35 div 1.0 div 1.5 div
EXT INPUT
Maximum Input Voltage
&
400 V (de + peak ac) or 800 V ac p-p at 10 kHz or less.
--
See Figure 1-1 for maximum input voltage vs frequency derating
curve.
Input Resistance
1 Mfl ±2%.
Input Capacitance
20 pF ± 2.5 pF.
AC Coupled Lower Cutoff Frequency
10 Hz or less at -3 dB.
LEVEL Control Range
A Trigger (NORM)
INT
May be set at any voltage level of the trace that can be displayed.
EXT,DC
At least ± 1.6 V, 3.2 V p-p.
EXT, DC+10
At least ± 16 V, 32 V p-p.
B Trigger (Internal) May be set at any point of the trace that can be displayed.
VAR HOLDOFF Control
Increases NON STORE A Sweep holdoff time by at least a factor
(NON STORE Holdoff)
of 10.
STORE holdoff is a function of microprocessor activity and the
pretrigger acquisition.
The VAR HOLDOFF control maintains
some control over the STORE holdoff by preventing a new trigger
from being accepted by the storage circuitry until the next (or
current, if one is in progress) NON STORE holdoff has completed.
Acquisition Window Trigger Point
PRETRIG
Seven-eighths of the waveform acquisition window is prior to the
trigger (other trigger points are selectable via the MENU).
POST TRIG One-eighth of the waveform acquisition window is prior to the
trigger (other trigger points are selectable via the MENU).
1-7

Tektronix 2230 Specifications

General

Brand	Tektronix
Model	2230
Category	Test Equipment
Language	English