Tektronix 2235A Instruction Manual page 15

Specifications
-
2235A Instruction
Table 1-1 (cont)
TRIGGER SYSTEM
Characteristics
Performance Requirements
a
Performance Requirement not checked
in Service Manual.
A TRIGGER Sensitivity
P-P AUTO/TV and NORM Modes (A TRIG
BW switch in FULL position)
Internal
External
HF REJ
LF REJ
Lowest Usable Frequency in
P-P AUTO Mode
TV LINE (Sync Amplitude)
TV FIELD Mode
B TRIGGER Sensitivity (Internal Only)
EXT INPUT
Maximum Input Voltage
A
Input Resistance
Input Capacitance
AC Coupled Lower Cutoff
Offset
LEVEL Control Range
A TRIGGER (NORM)
I NT
EXT, DC
EXT, DC+ 10
B TRIGGER (Internal)
VAR HOLDOFF Control
Scans by ARTEK M E m
r>
REV APR
1990
100 MHz
1.5 div
150 mV
10 MHz
0.35 div
35 mV
60 MHz
1.0 div
120 mV
External trigger signal from a 50 R source driving a 50 R coaxial
cable terminated in 50 R at the input connector.
Reduces trigger signal amplitude at high frequencies by about
20 dB with rolloff beginning 40 kHz
+
25%
.a
Attenuates signals below 40 kHz (-3 dB point at 40 kHz
+
25%).a
20 Hz with 1.0 division internal or 100 mV external.a
Internala
0.35 div
Externala
35 m~ p-p
21 division of composite sync.a
10 MHz
0.35 div
400 V (dc
+
peak ac) or 800 V ac p-p at 10 kHz or less.a
See Figure 1-1 for derating curve.
1 MR k2%.a
20 pF k2.5 PF.~
10 Hz or less at lower -3 dB point.a
25 mV or less.
Can be set to any point of the trace that can be disp1ayed.a
At least
+
1.6 V, 3.2 V p-p.
At least
k
16 V , 32 V p-p.a
Can be set to any point of the trace that can be d i ~ p l a y e d . ~
Increases A Sweep holdoff time by at least a factor of 10.a
60 MHz
1.0 div
100 MHz
1.5 div