Performance
Tests
F. Using the Range
Down
function,
set
the
amplitude
of
the 3314A to l.OOOVp-p.
G. Set the
Attenuator
to OdE.
H.
Record the
Marker
Amplitude displayed on the
CRT
in the
appropriate
section of
Table
4-9 located in
the
Performance
Test Record,
Model 3314A
*NOTE
This attenuator must have current certifica-
tion data at frequencies
oj
10kHz, 50kHz,
IMHz, 20MHz, and attenuations
of
lOdB
and 20dB.
Procedures:
A.
Preset
the 3314A.
I
From
the readmg taken m step
H,
subtract
the
In-
sertion
loss
Error
of the
Attenuator
Add
that
quantity
to
the Attenuator's settmg and enter the result under
"Ac-
tual
Attenuation"
in Table 4-9. (See
Performance
Test
Record for an example.)
J. Set the
Attenuator
to 40dE.
B. Set
the
3314A as follows:
Frequency .
-. ,
..
- . " .
Amplitude
, ,
,._
Range
Hold
, , . , , . , , , ,
....
, , , , .
10kHz
10Vp-p
--,.
On
K. Set
the
amplitude
of
the 3314A to
1O.OOVp-p.
1.
Repeat step E.
M. Using the Range
Down
function,
set
the
amplitude
of
the
3314A to
l00mVp-p.
N. Set the
Attenuator
to OdB,
O.
Repeat
steps H&I.
P, Set the
Attenuator
to 60dE.
Q.
Set
the
amplitude
of
the
3314A
to
1O.OOVp-p.
R. Repeat step E.
S. Using
the
Range
Down
function, set
the
amplitude
of
the 3314A to 1O.OmVp-p.
T. Set the
Attenuator
to OdB.
U.
Repeat
steps H &
I.
V, Set the 3314A to the remaming frequencies shown
in Table
4-9. Repeat steps E
through
U for each setting,
4-17.
VERNIER
ATTENUATOR
FLATNESS
This test checks
the
flatness
of
the
3314A Vernier
At-
tenuator.
Specification:
C, Set
the
Attenuator
to lOdB
attenuation.
D.
Connect
the
3314A to
the
Attenuator
and
Spec-
trum
Analyzer as
shown
in Figure 4-17.
E.
Set the Spectrum Analyzer as follows:
I.
Press
"INSTR
PRESET"_
2.
Enter
Center
Frequency
(3314A Frequency Set-
ting).
3. Set the Frequency Span to 2x
Center
Frequency,
4. Enable
"COUNTER".
5. Press
"MKR
-
CF"
.
6. Disable
COUNTER.
7. Press
"MANUAL".
8. Press
"CLEAR
A".
9. Press
"MKR-REF
LVL".
10, Set
"dB/DIV"
to
IdB,
II,
Press"
REF 1 VL"
and
adj ust to approximately
1dB below full scale,
12 Set Video
Bandwidth
to 10Hz
13. Press
"OFFSET".
20Hz
to
50kHz
50kHz to
IMHz
1
MHz
to
20MHz
Equipment
Required:
Spectrum
Analyzer
VHF
Attenuator"
4-20
±O.03dB
±O.16dB
±O.7dB
14. Press
"ENTER
OFFSET".
IS. Press
"SAVE
(off)",
"4
(cal)".
F.
Using the
Modify
knob,
set the
amplitude
of
the
3314A to 3.16Vp-p.
G, Set the
Attenuator
to OdE.
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