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Performance Tests
F. Using the Range Down function, set the amplitude
of the 3314A to 1.000Vp-p.
G. Set the Attenuator to OdB.
H. Record the Marker Amplitude displayed on the
CRT in the appropriate section of Table 4-9 located in
the Performance Test Record.
I. From the reading taken in step H, subtract the In-
sertion Loss Error of the Attenuator. Add that quantity
to the Attenuator's setting and enter the result under ''Ac-
tual Attenuation" in Table 4-9. (See Performance Test
Record for an example.)
J. Set the Attenuator to 40dB.
K. Set the amplitude of the 3314A to 10.00Vp-p.
L. Repeat step E.
M. Using
the
Range
Down
function,
set
the
amplitude of the 3314A to 100mVp-p.
N. Set the Attenuator to OdB.
O. Repeat steps H&I.
P. Set the Attenuator
to 60dB.
Q. Set
the
amplitude
of
the
3314A
to
10.00Vp-p.
R. Repeat step E.
S. Using the Range Down function, set the amplitude
of the 3314A to 10.0mVp-p.
T. Set the Attenuator to OdB.
U. Repeat steps H & I.
V. Set the 3314A to the remaining 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:
20Hz to 50kHz
+ 0.03dB
SOkHz to IMHz
+0.16dB
IMHz to 20MHz
+0.7dB
Equipment Required:
Spectrum Analyzer
VHF Attenuator*
4-20
Model 3314A
*NOTE
This attenuator must have current certifica-
tion data at frequencies of 10kHz, 50kHz,
IMHz,
20MHz,
and attenuations of 10dB
and 20dB.
Procedures:
А. Preset the 3314A.
B. Set the 3314A as follows:
Frequency ...........................
10kHz
Amplitude
..........................
10Ур-р
Range Hold ............................. On
C. Set the Attenuator to 10dB 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:
1. 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 "МКЕ—СЕ".
6. Disable COUNTER.
7. Press "MANUAL".
8. Press "CLEAR A".
9. Press "MKR
-- КЕЕ ТМ".
10. Set "dB/DIV" to 1dB.
11, Press "REF ТМ" and adjust to approximately
1dB below full scale.
|
12. Set Video Bandwidth to 10Hz.
13. Press "OFFSET".
14. Press *ENTER OFFSET",
15. Press "SAVE (off), "4 (ca''.
F. Using the Modify knob, set the amplitude of the
3314A to 3.16Vp-p.
G. Set the Attenuator
to OdB.
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