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1705A Spectrum Monitor
vii
Figure 3-8: Considerations for custom installation of an instrument 3--8....................
Figure 4-1: 1705A L--Band comb display showing the areas each of the six sweep shaper
variable resistors adjust 4--8.............................................
Figure 4-2: Output duty cycle of the pulse width modulator used in the +18 V Power Supply 4--13
Figure 4-3: Pinout of the CRT Socket 4--19...........................................
Figure 5-1: Initial equipment connections 5--6........................................
Figure 5-2: Check time mark graticule alignment 5--8..................................
Figure 5-3: Output of the SG503 connected directly to the 1705A 70 MHz INPUT 5--9.......
Figure 5-4: Equipment connections for L--Band checkout 5--12...........................
Figure 5-5: Aligning L--Band time markers with the g raticule lines 5--13....................
Figure 5-6: Using the UHF Signal Generator to check L--Band Span/Division, Readout, Gain,
and Flatness 5--14.....................................................
Figure 5-7: Adjustment locations 5--19...............................................
Figure 5-8: DAC check waveforms used to check Focus, Astigmatism, Geometry, and setting
of the Trace Rotation 5--20..............................................
Figure 5-9: Location of the shorting strap used when adjusting sweep length 5--21............
Figure 6-1: Using the 1705A menus 6--4............................................
Figure 6-2: 1705A Test menu, displayed when Test is the Main menu selection 6--5..........
Figure 6-3: 1705A CRT display when the NOVRAM Test has been successfully completed 6--6
Figure 6-4: 1705A power up error message 6--7.......................................
Figure 6-5: DAC check waveform 6--8.............................................
Figure 6-6: Circuit board assembly locations 6--9.....................................
Figure 6-7: Multiple pin connectors used in the 1705A Spectrum Monitor 6--11..............
Figure 6-8: Bezel securing screws 6--20..............................................
Figure 6-9: Screws securing the rear panel 6--22.......................................
Figure 6-10: Screws securing the front panel board (A2) in place 6--23.....................
Figure 6-11: Screws holding the Main board (A3) and the Tuners (A5 and A6) in place 6--24....
Figure 6-12: Removing the Power Supply board 6--26...................................
Figure 6-13: Mounting screws for the LNB Power Supply circuit board, A4 6--26.............
Figure 6-14: Repackaging a 1705A instrument 6--27....................................