Tektronix 1705A, Instruction Manual

Page: 8 / 223

Table of Contents
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 graticule 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .