Tektronix 1705A instruction manual Performance Check, Short-Form Procedure

Checks and Adjustments

11.SMA Male-to-bnc Female Adapter

Two required (supplied with the Tektronix Comb Generator). For example: Tektronix Part No. 015-1018-00.

12.SMB Female-to-bnc Female Adapter

For example: Coaxial Components Corporation Part No. 2525-4.

Performance Check

The Short-Form Procedure is intended for those who are familiar with the complete Performance Check procedure. Step numbers and sub-step designa- tions correlate directly to the steps in the Performance Check Procedure; this makes it possible to use the Short-Form Procedure as a table of contents.

Short-Form Procedure

1.Preliminary Setup

a.Connect autotransformer.

b.Connect markers from Comb Generator.

2.Check Power Supply Operation

d.CHECK - for stable operation over the prescribed voltage range.

3.Check LNB Power Supply

c.CHECK - that the rear-panel, red indicator lamp is lighted and that the DVM reads +18 V ±0.9 V.

e. CHECK - that the red indicator lamp extinguishes and then comes back on when the short is removed.

4.Check 70 MHz Linearity

c. CHECK - for 10 frequency markers from beginning to end of sweep.

d. CHECK - that each marker is within one minor Division of a major graticule Division.

5.Check 70 MHz SPAN/DIV and Readout

d. CHECK - for one mark every 5 major Divisions, ±1 major Division. k. CHECK - that readout reads 45, ±1 count.

m. CHECK - that the marker is on screen.

1705A Spectrum Monitor 5- 3