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Model 5308A
Operation
T;
9H-3-6
'SET' TRIG LEVELS.
Three position switch
presets the trigger level to the indicated vol-
tage (-.13V,
.0V, +.15V) when
the LEVEL
control on the front panel is in the SET posi-
tion. With a 10:1 divider probe connected to
the CHAN
A or CHAN B
connector on the
front panel, the -.13V position is used when
checking
ECL
logie circuits
and the +.15V
position is used when checking TTL logic cir-
cuits. The .OV position is used when measur-
ing a symmetrical waveform
such as a sine
Wave.
TRIG LEVELS A and B. Connectors provide
for measurement of Channel A or Channel B
trigger levels by a monitoring
DVM.
The
trigger level voltage is measured at the mid-
point of the hysteresis band.
GATE
OUT.
Provides
a TTL
level signal
(LOW)
while the 5300B
main
gate is open.
Used
for
time
interval
measurements
to
intensity
modulate
an
oscilloscope
to indi-
cate the interval being measured.
4. TIME
BASE
OUT.
This connector provides
two different outputs, selectable by the posi-
tion of the FUNCTION
switch, as follows:
a.
In the TOT A, LI
Band TOT A, AA B
positions of the FUNCTION
switch, the
TIME
BASE
OUT
connector
provides a
scaled
(divided)
output
of
the
input
signal frequency
applied to Channel
A.
The output is scaled by a factor of from 10
to 10% as set on the TIME BASE control.
b.
In the PER B and TIME A- B positions of
the FUNCTION
switch, the TIME
BASE
OUT
connector provides a scaled output
of the
internal
10 MHz
oscillator
fre-
quency. The output is scaled by a factor of
from 10 to 10% as set on the TIME BASE
control. The period of this output is indi-
cated by the black lettering on the TIME
BASE
control.
The same
output is pro-
vided when the FUNCTION
switch is in
TOT
A, LF B or TOT
A, AA B posi-
tion and the SEP-CHK-COM B switch is
in the CHK position.
F igure 9H-3-3.
Rear Panel Control and Connectors
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