Performance C heck/Calibration— Type 1L40
9. Check Attenuation Range of IF G A IN
Control
a. The equipment setup for this step is given in step 8.
b. W ith the G A IN control fully counterclockwise, adjust
the Signal Generator VARIABLE Attenuator control for a dis
play amplitude of 6 cm. Note the Attenuator reading in
dBm.
c. Increase the Signal Generator attenuation 50 dB. Turn
the G A IN control fully clockwise.
d. CHECK— Signal amplitude must equal or exceed 6 cm.
(Range > 50 dB.) If the range does not meet this requirement,
recheck the adjustment of the IF am plifier response (step 3).
10. Check Amplitude of the Signal at the TO
RECORDER output jack
REQUIREMENT— W ith the analyzer in LIN mode, the output
across a 600 L2 load must equal or exceed 2 mV of signal
per centimeter of display amplitude.
a. Set up the equipment as shown in Fig. 5-18.
b. Plug the test phone plug, with a 600 f i load resistor
across the terminals, into the TO RECORDER jack. Connect
a IX probe from the test oscilloscope across the 600 S2
resistor.
c. W ith the VERTICAL DISPLAY switch in the LIN position
and 200MHz signal applied to the RF INPUT connector,
Adjust the G A IN control a n d /o r the Signal Generator out
put for a display amplitude of 6 cm.
d. CHECK— Signal amplitude across the 600 Q lood resis
tor at the TO RECORDER connector should measure between
12 mV and 20 mV.
e. Remove the test oscilloscope probe and the test phone
plug.
NOTES
Summary of Contents for 1L40
Page 30: ...Fig 3 1 Type 1L40 Block Diagram CO K ISO 2 5 0 MHz 75 MHz Circuit Description Type 1L40 ...
Page 40: ...NOTES ...
Page 54: ...NOTES ...
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Page 117: ...I ...
Page 119: ...T Y P E I L 4 0 S F t C T R U M A N A U V t R A ...
Page 120: ...L R O G 8 R F P H A S E L O C K D I A G R A M A ...
Page 124: ... 75V T Y P L I L A Q S P f c C T R U M A N A L Y Z t R ...
Page 126: ... T y p t S P E C T R u M A N A U V 2 f e R A ...
Page 127: ...4 A P H A S t L O C K C I R C U I T ...
Page 128: ...iv r AMPUH19 1 rRon J9A 4 T Y P E L 4 0 S P E C T R U M A N A L Y Z C R A I ...
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Page 134: ... IS MHZ IP lO M Hx OSCILLATOR r T Y P E IL 4 0 SPECTRUM ANALYZED ...
Page 135: ... lL I z 5 a or lJ ui Ul X i u tt O a i d id u it l h 5 12 2 a or PO S 3 J3 ...
Page 139: ...DETECTORS i 4 1066 OUTPUT AMPLIPIER ...
Page 140: ...FIG 1 FRONT REAR TYPE 1L40 SPECTRUM ANALYZER ...
Page 141: ...FIG 2 IF CHASSIS PHASE LOCK AS 6 1 ...
Page 142: ...F CHASSIS PHASE LOCK ASSEMBLIES TYPE 1L40 SPECTRUM ANALYZER ...
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