Fre Qu E Nc Y Re Fe Re Nc E T Il E - Aeroflex 3900 Series Operation Manual

F r eq u en cy R ef er e n ce T ile
The F requ ency Re fer ence Til e locks th e Test Set to t he int ernal fre quency sta ndard or t o an e xt ern al
signal fro m the Ext Re f I /O connect ion.
When exter nal is sele cted an ext erna l sour ce must be connect ed t o t he E xt R ef I/ O Con nector on the
Rea r P anel.
R e f er e n ce ( I n t e r n al / E x t e rna l )
The Ref eren c e (I nter nal / E xtern al) drop -dow n menu def ines t he r efer ence sou rce a s inte rnal or
exter nal. If ext ernal is sele cted a n ext ernal source must be conn ected to t he E x t R ef I/O
Con nector on the R ear Panel . Incor rect R efe rence set ting r esults in e rro r message show n belo w.
T est Set U til it y Ti les
Fi g. 4- 31 UT ILS Fr equency Ref erence Tile
Fig. 4- 32 R ef erence Un locked E rr or Me ssa ge
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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