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Figurc 5-22. PreselectorDrivertest point and adiustmentlocations.

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m. Repeatparts k and I to compensate

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u. Adjust

-829

MHz tF Offset Ri049 (Figure5-22)

for int€rac_

tion.

to peakthe 3.5 GHzresponse.

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n. lncrease FREQUENCY

v. ChangeFREQRANGE

to the 12GHz marker,

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then peak the 12 GHz point with Shaper #1

R1OS4

FREQUENCY

to 3.0-7.1 GHz, set the

adjustment(Figure5-22).

to 5.0GHz to observethe marker,then

peak the 5.0 GHz signatwith the +829 MHz tF Offset

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o. Set FREeUENCY

R1045adjustment.

to centerthe 17 GHz marker,

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then peak the signat with Shaper #2, R1056 adjust_

w. ChangeFREQRANGE

ment.

to 15-21 GHz. Set th€

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FREQUENCYto 15GHz,then peakthe t5GHz signal

p. Recheckthe 6,9, 12,and17 GHzpointsto verify

with Rl064.

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that th€y all peak at the sameposition

or tne rront_panet

x. Tune the 19 GHz markerto c€nter screenthen

MANUALPEAKINGcontrol. lf they do not, repeatparts

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peak the 19 GHz signalwith Shaper#3 R1061adjust-

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ment(Figure5-22).

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q. Change the FREQ RANGE to

1.7_5.5 GHz

y. Tuneto the 21 GHz markerthen peak the signal

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(Band 2). Center the 5.5 GHz marker,then peak the

with shaper #4 n1063adjustment.

signatwiththe MANUALPEAKcontrol.

z. Recheckthe 15, 19, and 21 GHzpointsto verify

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r. change FREQ RANGEto 5.4_19.0 GHz (Band

that they all peak at the samepositionof the MANUAL

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4). Centerthe 5.5 GHz with the CENTERFREQUiNCY

PEAKcontrol.

control. AdjustInputOffsetR10gl, to peakthe signat.

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:. Repeatparts q and r untit the signatamptitude

aa. ChangeFREQRANGEto 3.0-7.1 GHz,center

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peaks,on both bands, occur at the same positionof the

a 5.0 GHz signalon screen;then peak the signalwith

MANUALPEAKcontrot.

the +829 MHz lF, Rl045 adjustment.

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t. Set MANUAL pEAK control so the index mark

ab. Changeto the 1.7-5.5 GHz band, center a

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alignswith the front panelmark. ChangeFREQRANGE

3.5 GHz markeron screen,thenpeakthe 9.5GHz sig-

tO 1.7_5.5

GHZ,ANdSEt

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-829

thE CENTERFREQUENCY

nalwiththe

MHztF,Rl049 adjustment.

centerthe 3.5 GHz comb marker.

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