Rear Panel - Tektronix 2235A Instruction Manual

Operating Instructions- 2235A Instruction
Vertical
Table 2-1
MODE Trlgger Source
occurs in triggerable after delay mode. The fully
clockwise position of the B TRIGGER LEVEL Control
selects the runs after delay mode of operation for the
B Trigger circuitry. Out of the cw position, B Sweep is
triggerable after the delay time.
VERT MODE
CH 1
CH 2
BOTH and ADD
BOTH and CHOP
BOTH and ALT
@
VAR HOLDOFF Control-Varies the holdoff time
over a 10 to 1 range. Variable Holdoff starts at the
Trigger Source
CH 1 O R X input signal.
CH 2 O R Y input signal.
Algebraic sum of CH 1 O R X
and CH 2 O R Y input signals.
Algebraic sum of CH 1 O R X
and CH 2 O R Y input signals.
Alternates between Channel 1
and Channel 2 on every other
sweep (i.e., CH 1 O R X input
signal triggers the sweep that
displays Channel 1, and CH 2
O R Y input signal triggers the
sweep that displays Channel 2.
end of the A Sweep. This control improves the ability
to trigger on aperiodic signals (such as complex
digital waveforms).
REAR PANEL
Refer to Figure 2-7 for location of item 35.
@
EXT Z-AXIS Connector
-
Provides a means of
connecting external signals to the Z-Axis amplifier
to intensity modulate the crt. Applied signals do not
affect display waveshape. Signals with fast rise
LF REJ -Attenuates low-frequency triggering
times and fall times provide the best intensity
signal components below 40 kHz of the trigger
change, and a 5 V p-p signal will produce notice-
signal.
able modulation. The Z-axis signals must be time-
related to the display to obtain a stable presentation
A LINE SOURCE-Routes a sample of the ac
on the crt.
power source waveform to the A Trigger circuit.
@
A EXT COUPL Switch-Selects the method of
coupling the external signal applied to the EXT
INPUT connector to the A Trigger circuit.
AC
-
Input signal is capacitively coupled, and
blocks the dc component of the signal.
DC-Couples dc and all frequency com-
ponents of the external trigger signal.
DCI10 -Attenuates the external signal by a
factor of 10. Couples dc and all frequency com-
ponents of the external trigger signal.
@
EXT INPUT Connector
-
Provides for connection of
external signals to the A Trigger circuit.
@
B TRIGGER SLOPE Switch-Selects either the
positive slope (button out) or the negative slope
(button in) of the B Trigger signal (internal source
only) that starts the B sweep.
@
6 TRIGGER LEVEL Control
-
Selects the ampli-
tude point on the B Trigger signal where triggering
WARNING
FOR CONTINUED FIRE PROTECTION
REPUCE ONLY W I T H SPECIFIED
TYPE A N 0 RATED FUSE. OISCONNECT
POWER INPUT BEFORE REPLACING FUSE.
0 0 NOT REMOVE
COVER. REFER
SERVICING TO
OWLIFIEO
PERSONNIL
POWER
M A X W A m S 15
M A X VA 1 3 0
FREO 48 4 4 0 8 2
WARNING
HIGH LEAKAGE CURRENT.
TO AVOID ELECTRIC
SHOCK. THE POWER
CORD PROTECTIVE
GROUNDING CONDUCTOR
M U S T BE CONNECTED
TO GROUNO.
E X 1 Z AXIS INPUT
1 0 K O . POSITIVE GOING
INPUT OECREASES
INTENSITY
5 VOLT P-P CAUSES
NOTICEABLE
MOOULATION AT
NORMAL INTENSITY.
5 3 0 V PEAK
TEKTRONIX INC BEAYERTON OR G O N
U
S A
/ l i
Figure 2-7. Rear-panel connector.
Scans by
ARTEK MEDU =>