Rear Panel - Tektronix 2205 Service Manual

Operating Information—2205 Service
GH 2— Trigger signal is obtained from the
CH 2 DR Y input. The CH 2 INVERT switch
also inverts the polarity of the internal
Channel 2 trigger signal when the Channel 2
display is inverted.
EXT—Selects external trigger source. The
actual form these triggers take is selected
by the second SOURCE switch.
LINE—Routes a sample of the ac-pow er-
line signal to the trigger circuit.
EXTMO—Divides the external signal applied
to the EXT INPUT
factor of ten before applying it to the trigger
circuit.
EXT—Routes an external signal applied to
the EXT INPUT
or
circuit.
EXT=Z—Routes the signal applied to the
EXT INPUT OR Z connector to the Z-Axis
am plifier rather than the trigger circuit.
28) EXT INPUT OR Z Connector—Provides for
connection of external signals either to the
trigger circuit for external triggering or to the
Zr*Axis am plifier for intensity modulation of the
crt display.

REAR PANEL

Refer to Figure 2-3 for item s 29 through 31.
(29) Fuse Holder—Contains the ac-pow er-source
fuse. See the rear-panel nomenclature for
fuse rating and line-voltage range.
Z connector by a
or
Z connector to the trigger
(30) Detachable-Power-Cord
v- '/ vldes the connection point for the ac-power
source to the instrument.
(3 t) Line Voltage Selector Switch—Selects the
line voltage operating range of either 115 Vac
or 230 Vac.
Receptacle—Pro-