BIRD THRULINE 4020 series, Инструкция, Страница: 23 / 74

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Chapter 3 Operating Instructions
This chapter describes operator controls and indicators on the Bird 4421 RF
Power Meter. For remote operation using a GPIB or RS-232 controller, refer to
t h e in st r u ct ion s in Ch a pt er 4 or Ch a pt er 5 r espect ively.
Push Button Functions
Figure 7
Push Buttons
LISTEN TALK LOCAL LOCKOUT
FWD
AUTO
LO BAT
REMOTE
MODEL 4421 RF POWER METER
AUTO
RANGE
UP
DOWN
SWR RFL FWD MIN MAX dBm LIGHT ON / OFF
MW nW
KW µW
W mW
dBm FWD
RFL
SWR
Push Button Description
FWD, RFL
P r ess t o m ea su r e for wa r d or r eflect ed RF power . F WD or
RF L in dica t or a n d cu r r en t u n it of m ea su r e t u r n on .
SWR
P r ess t o m ea su r e st a n din g wa ve r a t io. SWR in dica t or
t u r n s on . Va lu e displa yed will be bet ween 1.0 a n d 199.9
MIN, MAX
U sed a ft er pr essin g F WD, RF L, SWR, or dBm . Displa ys
the minimum (maximum) measured value of the previous
fu n ct ion a s lon g a s MIN (MAX) is h eld down .
dBm Used after pressing FWD or RFL. dBm indicator turns on.
P ower is displa yed in dBm u n it s.
U sed a ft er pr essin g SWR. Ret u r n loss is displa yed.
LIGHT
on , t h e ligh t a u t om a t ica lly sh u t s off a ft er 30 m in u t es.
AUTO P r ess t o a u t om a t ica lly set t h e sca le. AU TO t u r n s on .
UP, DOWN Press to select the next higher (lower) scale. If the scale is
t oo h igh for t h e power sen sor , a n er r or will be displa yed.
U sed wh ile AU TO in dica t or is on . St ops a u t om a t ic
sca lin g. AU TO in dica t or t u r n s off.
ON/OFF
P r ess t o t u r n t h e power m et er on or off. Th is swit ch will
n ot wor k if t h e m a st er power swit ch on t h e r ea r pa n el is
OFF.
Th e displa y fla sh es for a bou t 30 secon ds wh en t h e u n it is
fir st t u r n ed on .