Li M I Ts - Aeroflex 3900 Series Operation Manual

L im it s
3900 Test Systems contain a var iet y of Conf igur ation Tiles to allow the user to defin e and enable
upper and l ower limit pass/f ail par ameter s. T he displ ay is conf igure d to col or- code mete r r esults t o
easily identi fy w hethe r o r no t measur ement s are wi thin an expe cted r ange.
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RE D indicat es a me asuremen t ha s exceeded the defi ned up per limit va lue.
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G RE EN indica tes a measure m ent i s wi thin define d upp er a nd low er limit values.
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BL UE indi ca tes a measur ement i s below t he de fined low er l imit va lue.
U p pe r L i m i t s
The UP PE R LIMIT fun ct ion sets a maximum accep table rea ding for a spe cific me asuremen t. When
a mea su red level exceeds the enable d U PP ER LI MI T, the Meter B ar and readi ng ba ckgroun d on the
Measure m ent T iles t urns RE D.
When read ings w ithi n enab led U pper and Low er limits t he Met er Bar and rea ding b ackgroun d on
the Measure me nt T iles t urns GR EE N.
An Upp er L imit val ue must be g reat er than the va lue d efined in t he L ower Limit fi eld, even if th e
Low er Limit i s not enable d.
For exampl e, if the T/R Inband P owe r Uppe r and Lowe r Limit values on the RF Li mi ts C onf igura tion
Tile are both 0.0 dBm (def ault values) , t o set T/R I nband Pow er Upp er L imit val ue t o -7 5 dB m:
1. Set T/ R Inband Low er Limit Value to a valu e less t han -75 dBm, for example -10 0 dB m.
2. Set T/ R Inband Up per Limit Value to -75 dBm.
T est Set Oper ati on
Fig . 3- 25 Ana log D uplex - L imits E nabled
S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
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