Tektronix 1705A Performance Check

Checks and Adjustments
1705A Spectrum Monitor 5-3
11. SMA Male-to-bnc Female Adapter
Tworequired (supplied with the Tektronix Comb Generator).
For example: TektronixPart No. 015-1018-00.
12. SMB Female-to-bnc Female Adapt er
For example: Coaxial Components CorporationP artNo. 2525-4.
Performance Check
The Short-Form Procedureis intendedfor those who are familiar with the
complete PerformanceCheck procedure. Step numbers and sub-step designa-
tions correlatedirectly to the steps in the Performance Check Procedure; this
makes it possible to use the Short-Form Procedure as a tableof contents.
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 voltagerange.
3. Check LNB Power Supply
c. CHECK --that the rear-panel, red indicator lam p is lighted and that the
DVM reads +18V ±0.9 V.
e. CHECK --that the red indicator lamp extinguishes andthen comes back
on when the short is removed.
4. Check 70 MHz Linearity
c. CHECK --for 10 frequency markersfrom beginning to end of sweep.
d. CHECK --that each marker is with in one minor Division of a major
graticuleDivision.
5. Check 70 MHz SPAN/DIVand Readout
d. CHECK --for one mark every 5 major Divisions, ±1major Division.
k. CHECK --that readout reads 45, ±1 count.
m. CHECK --that the marker is on s creen.
Short-Form Procedure