G.2.4 Ref Input Test
Pur
pose
Verify functionality
of
reference input, reference band-pass filter and reference detector.
Limit
10MHz±5%
nia
1
Vp-pmin
2)
Specification
Parameter
Accepted frequency
Rejected frequency
Signallevel
Setup
and
Procedure
1)
Connect 0.8 Vp-p, 10 MHz sine to Reference Input. Set
Model395
to 10
MHz sine wave output and monitor frequency
of
MAIN OUT.
Verify frequency at
MAIN OUT tûr each reference input frequency in
LIlt:
table below:
Ref Input Frequency Min.
10.5 MHz ± 0.1% 10,489,500
Hz
9.5 MHz ±0.1% 9,490,500 Hz
15 MHz ± 1% 9,999,700 Hz
5 MHz ± 1% 9,999,700 Hz
G.2.S Trigger Input Level/Slope Test
Max.
10,510,500
Hz
9,509,500 Hz
10,000,300
Hz
10,000,300 Hz
Limit
±300mV
Purpose
Verify the aceuraey and functionality
of
the trigger input circuits.
Specification
Parameter
Trigger level
Setup
and
Procedure
1) Set the Model 395
to
gated mode, 1
MHz
square wave; trigger source
external, positive slope. Apply
20
Vp-p, 1 kHz triangle
wave
to Trigger
Input. Triangle signal should have no de offset and be accurate to 0.3%.
2) Set slope and level controls as indicated in the table below. Measure the
frequency
of
the Main output. Make sure to use
agate
time
on
the counter
that
will
pro
vide a
stable
reading to the accuracy
required,
since
the
measurement is being made on a gated signal.
Level/Slope Program
+8V, +slope
OV,
+slope
-8V, +slope
-8V,-slope
G.2.6 Sync Output Test
Min.
90kHz
490kHz
890kHz
90kHz
Max.
110kHz
510kHz
910kHz
110kHz
Pur
pose
Limit
<lns
>2.0 V into
son
<004
V into
son
Verify waveform quality and level
of
the sync output.
Specification
Parameter
Rise/fall time
High level
Lowlevel
G-2 Performance Verification andAlignment Procedures
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