c. Connect the output of the MARKER OUTPUT connector
on the Type 184 through a 50 n coaxial cable and 50 n
termination resistor to the vertical Input connector of the
vertical plug-in unit (Type L) in the test oscilloscope.
d. Set the Type 184 and test oscilloscope controls as
follows:
Type
184
MARKER SELECTOR
TRIGGER SELECTOR
MARKER AMPLI FIER
H.F. SELECTOR
Test oscil loscope
Crt controls
Horizontal Display
Time Base A Controls
Time/Cm
Variable
Trigger Mode
Trigger Slope
Stability
Triggering Level
Vertical Plug-In Unit !Type L l
.1 p.S
1 p.S
OFF
OFF
Adjust for well focused
display of nominal
brightness
Time Base A
.1 p.SEC
Calibrated
AC
+ Ext
Preset
Midrange
Volts/Cm
.5
Variable
Input Coupling
Vertical Position
Calibrated
DC
Centered
e. Adjust the Triggering Level control when necessary for
a stable display as each step in Table 5-1 is followed.
f. Check the marker timing in accordance with Table 5-1 .
4.
Check MARKER OUTPUT Amplitude
a. Requirement-Marker amplitude must be greater than
1 volt into
50
ohms.
b. Repeat the steps of Table 5-1 , pushing only one MARK
ER SELECTOR button at a time. Check the amplitude of
the time markers.
5.
Check Output of MARKER AMPLIFIER
a. Requirements-Positive or negative-going markers with
1 4 interva ls of 1 p's to 5 s in 1 -5-1 0 sequence, 25-V minimum
amplitude into 1 kn.
h.
Connect a BNC to binding post adapter to the MARKER
AMPLI FIER OUTPUT connector. Attach a 1 kn 1/2 watt, 1 %
®I
Performance Check-Type
184
resistor across the dual binding post adapter. Connect a
clip lead to BNC adapter to the dual binding post adapter
(red lead to the red binding post). Connect a 50 n coaxial
cable between the clip lead to BNC adapter and the Input
connector of the vertical plug-in unit in the test oscilloscope.
(Fig. 6-1 3 in Calibration section.)
c.
Set the vertical deflection factor (Volts/Cm switch) to
1 0.
d. Set the Trigger Slope switch of the test oscilloscope to
+ Int and the Time/Cm switch as listed in Table 5-2.
e. Switch the MARKER AMPLI FIER switch to (+) position
and check the amplitude of the MARKER AMPLIFIER output
signal for each setting listed in Table 5-2.
f. Change the MARKER AMPLIFIER switch to the (-) posi
tion and the test oscilloscope Trigger Slope to (- Int) position.
g. Check the amplitude of the MARKER AMPLIFIER output
signal for a minimum -25 volt signal.
h. Remove the adapters and cables from the Type 1 84 and
test osci lloscope.
TABLE
5-2
Type 1 84
Test
Oscilloscope
MARKER SELECTOR
Time/Cm
1 p.S
1 0 p.SEC
5 p.S
1 0 p.SEC
1 0 p.S
.1 mSEC
50 p.S
.1 mSEC
.1 mS
1 mSEC
.5 mS
1 mSEC
1 mS
10 mSEC
5 mS
10 mSEC
10 mS
1 00 mSEC
50 mS
1 00 mSEC
.1 S
1 SEC
.5 S
1 SEC
1 S
1 SEC
5 S
1 SEC
6.
Check Amplitude and Timing of the TRIGGER
OUTPUT
a. Requirement-Positive-going pulses in 1 -1 0 sequence,
amplitude ;::::0.4 V into
50
n or ;::::2.5 V into open circuit.
b. Apply the signal from the TRIGGER OUTPUT connector
through a 50 n coaxial ca ble and 50 n termination to the
vertical Input connector of the vertical plug-in unit (Type L).
c. Set the Volts/Cm switch on the vertical unit to .2.
d. Check the trigger timing and amplitude as listed in
Table 5-3.
5-3
Содержание 184
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Страница 6: ...NOTES ...
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Страница 65: ...Mechanical Parts List Type 1 84 8 5 ...
Страница 68: ...Mechanical Parts List Type 1 84 8 8 BOARDS REAR ...
Страница 76: ...NOTES ...
Страница 86: ... 50mS ...
Страница 94: ...TYPE 184 TENT SN 2200 PARTS LIST CORRECTION CHANGE TO B534 Incandescent 10 V 40 IIA Ml2 031 667 ...