Operating Instructions

45

 

 

 

70 MHZ

 

 

95

MHZ

 

 

 

 

 

 

 

MHZ

 

55

60

65

70

75

80

85

90

 

 

50

 

 

 

 

 

 

 

 

 

 

 

 

Tek

+ f

REF

-10

-20

-30

-40

-50

-60

-70

L

O

G

1000 1100 1200 1300 1400 1500 1600 1700 1800

900

 

1900

MHZ

L-BAND

MHZ

Figure 2-6: Frequency relationship to horizontal graticule scale; center frequency corresponds to the center of the horizontal scale

Center Frequency Readout

The 1705A is equipped with alphanumeric readout for the CENTER FREQUEN- CY. This readout works in conjunction with a cursor. In FULL SPAN/DIV, the cursor is actually a bright-up zone on the trace. See Figure 2-7. Actual position of the readout on the crt can be positioned to a location where it will not interfere with the measurements being made.

1705A Spectrum Monitor

2- 11

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Tektronix 1705A instruction manual Center Frequency Readout, 70 MHZ, Mhz