Checks and Adjustments

6.Check Resolution Filter

b.CHECK - that the marker width 0.6 Divisions down from the top is 3 Divisions, ±1 Division.

e.CHECK - that the marker width 0.6 Divisions down from the top of the signal is ≤2 minor Divisions.

f.CHECK - that the 10 kHz marker amplitude matches the highest point of the 300 kHz marker amplitude within 1 minor Division.

7.Check 70 MHz Gain and Flatness

e.CHECK - for a marker amplitude change of 2 Divisions, ±2 minor Divisions when switching the leveled sine wave generator Amplitude Multiplier between .01 and 0.1 (a 20 dB change).

i. CHECK - that the tip of the marker is on the crt center line, ±1 minor Division (vertically).

8.Check Video Filter

d. CHECK - that the baseline noise amplitude drops approximately 50% when the VIDEO FILTER is ON.

9.Check Sweep Speed

b. CHECK - for a solid trace with almost no flicker.

d. CHECK - for approximately 3 to 4 sweeps per second.

Alternate Method

e. CHECK - for a ramp duration of 20 ms ±10 ms.

h.CHECK - for a ramp duration of 200 ms ±100 ms.

10.Check L-Band Linearity

e.CHECK - for 10 frequency markers.

f.CHECK - that each marker is within 1 minor Division of a major graticule line.

11.Check L-Band SPAN/DIV and Readout

d.CHECK - for 1 marker every 5 Divisions, ±1 Division.

i.CHECK - for 1 marker every 5 Divisions, ±1 Division.

o.CHECK - that the marker is intensified. q. CHECK - that the marker is on screen.

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1705A Spectrum Monitor

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Tektronix instruction manual 1705A Spectrum Monitor