MFJ -121B Manual

MFJ -l 2l BD u a|R adi oContro | le dC|o ckwith Au to .Back|igh t
Theu ni tw or ksonr eceivi ngthe tim er ad io sig n a l.Th e tim esig na li sgener ated
UV ,f* US Atomic Ctoct itrictr is located in Colorado. The
Atomic Clock is
op"*r"o by the US Depafiment of commerce's Nationai Institute of
standards
"ia
i*n*f"ry.
To enhance eood receotion' avoid phci4g {he unit n9ar
ielevision seri ;;GiTrleces
cgmouten. or etectric devices as tnae
GGilEiFill
ioicrfcre the receotion of tedio signal'
The dual radio controlled wall clock features:
I
Dual clock: two clocks in one unit, each can be operated independently
lGMTtimez onewit hDavLie htSa vingTim e (DST)se le cta b le to oFF
r
Radio confiolled (ww'\rB) with automatic daylight saving time adjustment
I
Auto-Backlight. in" aisptay will be lighted for 8 hours continuously after
this function is activated.
r
Battery-lowindicator,
I
Big display sho\r6 tune in hour, minute, second
r nn4l*.display
format user selectable.
I
Mounted on wall or standing on desktop (with built-in easel stand).
When the battery power (for the auto-backlight) is low, the light will become
dim or there witi Ue no backlight. If this is the case, please replace
the batteries
(for the auto-backlight) with new ones.
Time radio sisnal recePtion
ffie
the time sigrral automatically, place the AUTO-
RECEPTION SWITCH at "ON" position
IMPORTANT
NOTE:
If the AUTo-RECEPTION
SWITCH is place at "oFF" position, the unit will
not start to receive time sigral automatically (manual reccption
is still
available).
The unit will search for time radio signals automatically after baJtertes
are
iniiul.O, if the AUTO-RECEPTION
SwnCg is placed ut :9N" position
Uri.i. Uln.ry installation. The radio signal mark on the right of the upper and
tower Oisptay will start pulsing to show the receiving status' lf time signal ls
received inddecoded suicessfulty,
the time will be updated automatically'
Remark: During signal reception, if the time is set manually, reception will
be terminated.
Since the unit works on receiving the time radio signal, there may be locations
that the sigral is weak and lannot be properly received. Under such
circumstancE, the radio sigrral mark will disappear to indicate reception failed'
Try to rotate the unit or plice it in other to941o1 to achieve better reception and
re-start reception by pressing the sET BUTTON once. If frnally, radio signal
camot be reieived,iime of Uottr Clock 1 and clock 2 should be set manually'
IMPORTANT NOTE:
Press the sET BUTTON of CONTROL PANEL I will only start the manual
reception of Clock l. To start the manual reception,of !gt9]ff
t *d
'
Clock 2, please press the SET BUTION at both CONTROL PANEL
I and
CONTROL PANEL 2.
Select the anoroPriate til4e zone
ffi
at CONTROL PANEL I and CONTROL
PANEL 2 to select the appropriate time zone for Clock I and Clock 2
respectively (Clock I and bto-ct Z can be set to a different time zone).
otherwise the unit may not be showing the conect time If your desire time
zone is not on the dispiay map you must set the time manually. See
"manual
time setting" instruction below.
Davlisht savine time adiustment
ffiing
time automatically after successful time
signal reception, if t6" fjSf ON OFF SW1TCH is placed at "ON'.position.
When the time is shown as daylight saving time, the daylight saving time mark
will be shown.
To deactivate this function, place the DsT ON OFF SWiTcH at "oFF"
position, and the unit will not be adjusted to daylight saving time automatically'
if you selected the GMT time zone the DST Switch should be placed at OFF.
Note:
Please place ttre DST ON OFF SWITCH at both CoNTROL PANEL I and
CONTROL PANEL 2 at the appropriate position.
Select the l2-Hour snd 24-Hour disolav fo.fr,nat.
L I and CONTROL PANEL
2 to select the display format of the time (clock I and clock 2 can be set to a
different display format).
Set the time manuallv
To set the ttme of Clock I ;
press and hold the sET BUTTON (at CONTROL PANEL l) for about 2
seconds The time digit wrll start to flash
Press the A or V BUTTON to set the tune. Each push of the A or V
BUTION wrll advance the minute by one, while the hour will be updated when
,.00" minute is run through. Press and hold the A or v BUTTON and the digits
will fast advance.
After setting, press the SET BUTTON once to end the setting mode, or the unlt
will quit the sening mode automatically after the unit is idle for about 30
seconds.
To set the nme of Clock 2:
Press and hold the sET BUTION (at CONTROL PANEL 2) for about 2
seconds. The time digit will start to flash.
The setting metirod is the same as Clock l.
The Auto-Backlieht
when the Autosacklight function is activated, the display will be lighted fbr E
hours continuously. TJ set the starting time of activating the Auto-Backlight,
place the ALryO LIGHT SWITCH
"i
"SET" position. The hour and minute
digits at Clock I will flash.
priss the A or V BUT1ON to set the starting time. Each push of the A or V
BUTTON will advance the minute by one, while ttre hour will be updated when
"00" minute is run through. Press and hold the A or V BUTTON and the digits
will fast advance.
After setting, place the Alrro
LIGHT SWTICH at "oN" position to activate
the function, or place at "oFF' position to quit the setting mode (without
acttvating the function).
clocK 2
BATTERY COMPARTMENT
FOR CLOCK
CONTROL PANTL I (f uK LLULr\ r.'
Batterv installation and replacement
ffiinses,
plecas of AA batteries (or equivalent) for running the clock and
2 pieces of AA batteries for the Auto-backlight function. There are two battery
compartrnents, located at the back of the unit. The left one is the banery
comparEnent for the clock and the right one is the battery compartment for the
auto-backlight.
Please use alkaline baneries. To install the batteries, slide open the battery
cover and insert the bafferies by following the polarity marked. After battery
installation (for the clock), please press the RESE-I BUTTON once to initialize
the unit. Now close the banery coven and the unit is ready for use.
MPORTA}TT NOTES:
l.
The two separated banery compartrnents allow the clock to run even
without the battenes for auto-backlight.
2.
If the banenes for auto.backlight run out of power (or not installed), the
backlight funcrion will stop (no backlight). Under such case, the clock
will still work as usual and keep the time accurate
when the battery power (for running the clock) is low, the "Battery-Low"
indicator will be flashing to remind the user. If this is the case, please replace
the batteries (for the clock) with new ones.
CoNTROLPANEL
I (FOR CLOCK 1)
BATTERY COMPARTMENT FOR
CONTROL PANEL ? (FOR CLOCK 2)