Horizontal Controls - Tektronix 2215A Operator's Instruction Manual

15
16
17
BW
LIMIT -When pressed in, this button switch
limits the bandwidth of the vertical amplifier and the
A Trigger system to approximately 10 MHz. Button
must be pressed a second time to release it and
regain full 60 MHz bandwidth operation. Provides a
method for reducing interference from high-fre-
quency signals when viewing low-frequency
signals.
INVERT
Switch-Inverts the Channel 2 display when
button is pressed in. Button must be pressed in a sec-
ond time to release it and regain a noninverted
display.
GND Connector-Provides direct connection to the
instrument chassis ground.
SERIAL and Mod Slots- The SERIAL slot is im-
printed with the instrument's serial number. The Mod
slot contains the option number that is installed in the
instrument.
HORIZONTAL
Preparation for Use- 221 SA Operators
18
A and B SEC/DIV Switches-Used to select the
sweep speeds for the A and B Sweep generators in a
1-2-5 sequence. To obtain calibrated sweep speeds,
the A and B SEC/DIV Variable control must be in the
calibrated detent (fully clockwise).
A SEC/DIV-The calibrated sweep speed is
shown between the two black lines on the clear
plastic skirt. This switch also selects the delay time
for delayed-sweep operation when used in con-
junction with the B DELAY TIME POSITION
control.
B
SEC/DIV- The
B Sweep speed
is
set by pulling
out the DLY'D SWEEP knob and rotating it clock-
wise to a setting opposite the white line scribed on
the knob. The B Sweep circuit is used only for de-
layed-sweep operation.
19
SEC/ DIV Variable Control-Provides continuously
variable, uncalibrated A Sweep speeds to at least 2.5
times slower than the calibrated setting. It extends the
slowest sweep speed to at least 1.25 s per division.
20
Refer to Figure 2-5 for location of items 18 through 24.
X10 Magnifier Switch-To increase displayed sweep
speed by a factor of 10, pull out the SEC/DIV Variable
knob. The fastest sweep speed can be extended to
5 ns per division. Push in the SEC/DIV Variable knob
to regain the X1 sweep speed.
2215A
60MHz OSCILLOSCOPE
HORIZONTAL
11:::::r:::::J
4732-05
Figure 2-5. Horizontal controls.
2-5