Tektronix 1705A instruction manual Long Form Procedure

Checks and Adjustments

s. CHECK - that the readout still reads 1000, ±10.

u.CHECK - that the marker is on screen.

v.CHECK - that the readout still reads 1000, ±10.

x.CHECK - that the marker is on screen.

12.Check L-Band Gain and Flatness

e.CHECK - that the marker is on the same crt center line (vertically),

±0.5 Division.

g.CHECK - that the marker is on the same crt line (vertically), ±0.5 Division.

j.CHECK - that the marker tip is on the -10 reference line, ±0.5 Division. Note: Make sure that the baseline is on the -70 graticule reference line.

13.Check Positioning Range

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

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

g.CHECK - for more than 1 Division of amplitude change.

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

Long Form Procedure

1.Preliminary Setup

a.Connect the 1705A ac power cord to the variable autotransformer. Turn power on and set the autotransformer to the local nominal mains voltage (110 V or 220 V). Allow 15 minutes for warm-up time before continu- ing.

b.Set up the 1705A as shown in Table 5-1.

1705A Spectrum Monitor 5- 5

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