Tektronix 1705A instruction manual End of the Performance Check Procedure

Checks and Adjustments

a.Set the UHF signal generator Frequency to 1400 MHz, and Amplitude to -60 dBm.

b.CHECK - that the tip can be positioned 2 Divisions left and right of center.

c.Set the UHF signal generator Amplitude to -30 dBm.

d.Position baseline on the -60 graticule reference line.

e.CHECK - that the marker tip can be positioned 3 Divisions down from its present position.

f.CHECK - that the baseline can be positioned to the -30 graticule line.

14.Check 2 dB/DIV Gain

REQUIREMENT - Greater than 1 Division of amplitude change while changing from -50 dBm to -53 dBm.

a.Set the UHF signal generator Frequency to 1400 MHz, and Amplitude to -50 dBm.

b.Hold the VIDEO push button until 2 dB/Div appears on the crt readout.

c.Use the CENTER FREQUENCY control to locate the 1400 MHz marker.

d.Select 100 kHz SPAN/DIV. Using CENTER FREQUENCY and VERTICAL controls, check that the marker tip can be positioned on screen.

e.Return to FULL SPAN.

f.Turn the 1705A SWEEP SPEED control fully counterclockwise.

g.CHECK - for more than 1 Division of amplitude change while switching the frequency generator between -50 dBm and -53 dBm.

h.CHECK - that the noise floor can be positioned on screen.

i.Hold the VIDEO push button down again to exit the 2 dB/Div mode.

End of the Performance Check Procedure

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