Operating Instructions (Cont) - Tektronix 7B70 Time Base Instruction Manual

Operating Instructions-7B70 (SN B205000 and Up)
. .
TRIGGERING
AC LF REJ LINE
TRIGGERING
NORM AC HFREJ
CONTROLS
DISPLAY MODE
SWEEP
CONTROLS
TRIGGERING
CONTROL
DISPLAY
SELECTOR
Fig. 2-2. Front-Panel controls and connectors.
SOURCE Series of push-button switches to
select the trigger source. Selected
source is indicated by lighted but-
ton.
INT: Trigger signal obtained inter-
nally from a vertical unit.
LINE: Trigger signal obtained in-
ternally from a sample of the
line voltage applied to this in-
EXT TRIG IN or
strument. EXT VOLTS IN
EXT: Trigger signal obtained from
an external signal applied to the
EXT TRIG IN connector.
EXT t 10: Trigger signal obtained
from an external signal applied
to the EXT TRIG IN connector
as in the EXT position. In this
position the external signal is
attenuated 10 times before it is
applied to the trigger circuit.
Input connector for external trigger
signal or amplifier input signal.
Scans by ArtekMedia
O 2006