FCC ID:K6630393X20
IC: 511B-30393X20
Alignment
Vertex Standard Co.,Ltd. 2
AlignmentPreparation&Precautions
A dummy load and inline wattmeter must be connected to the main antenna jack in all
procedures that call for transmission, except where specified otherwise. Correct alignment is
notpossiblewithanantenna.Aftercompletingonestep,readthefollowingsteptodetermine
whether the same test equipment will be required.
If not, remove the test equipment (except
dummyloadandwattmeter,ifconnected)beforeproceeding.
Correctalignmentrequiresthattheambienttemperaturebethesameasthatofthetransceiver
andtestequipment,andthatthistemperaturebeheldconstantbetween68°Fand86°F(20°C
and 30
°C). When the transceiver is brought into the shop from hot or cold air it should be
allowedsometimeforthermalequalizationwiththeenvironmentbeforealignment.Ifpossible,
alignments should be made with oscillator shieldsand circuit boards firmly affixed in place.
Also,thetestequipmentmustbethoroughly
warmedupbeforebeginning.
Note: Signal levels in dB referred to in this procedure are based on 0 dBμ = 0.5μV(closed
circuit).
Notice: Do not change the adjustment item except those written in the following adjustment
procedures.
EnteringtheAlignmentmode
Press and hold in the [H/L], [S] and [CLR] keys while turn the transceiver on to enter the
alignmentmode.
PLLSection
PLLReferenceFrequencyAdjustment
Connectthewattmeter,dummyload,andfrequencycountertotheantennajack.
Pressthe[S]or[T]keytoselectthedisplayto“REF”.
Press the [SQL] key, then press the [H/L] key to enable adjustment of the PLL Reference
Frequency.
Press
thePTTkeytotransmitthetransceiver,ifnecessary,pressthe[S]or[T]keytoadjust
thefrequencysothecounterfrequencyis156.800MHz(±100Hz).
Pressandholdthe[H/L]keyfor2secondstosavethenewsetting.
Pressthe[CLR
]keytoexitfromthisalignmentitem.
ReceiverSection
SquelchGainAdjustment
Referring to the “Receiver Section Alignment Setup” on the next page, connect the RF
SignalGeneratortotheantennajack,andconnecttheDCvoltmetertoTP1032.
Pressthe[S]or[T]keytoselectthedisplayto“GAIN”.
Pressthe[SQL]
keytoenableadjustmentoftheSquelchGainlevel.
Pressthe[S]or[T]keytoselectasmallcharacteroflowerrightcornerofthedisplayto
“C”.
SettheRFSignalGeneratoroutputlevel0dBμV(withastandardFMmodulation:±3.0kHz
deviation@1kHz)at156.800MHz.
Pressthe[H/L]key,thenpress the[S]or[T]keysothattheDCvoltmeterreadingis0.3V
(±0.05V).
Pressandholdthe[H/L]keyfor2secondstosavethenewsettingat
thebandcenter.
Press the [S] key to change the “C” character to “H” at the lower right corner of the
display.
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