JB Jb-L20 Скачать руководство пользователя страница 3

Second Menu page 

• 

alt: 

As  you  probably  know  the  pressure  is  never  constant  in  the  atmosphere.  There  are 

standard theore cal values that the variometer take in to account, but in reality the pressure 

at a certain al tude can be different in different moments. Here you can adjust the value of 

the al tude. As usual: Jp to select, up or down bu ons to change the value and Jp again to 

confirm.

• 

upT: 

Up Threshold (in meters per seconds or feet per seconds), this is the value for which you 

want the Jb-L20 gives you a posi ve  audio feedback. It means it will beep for thermals. Some 

people want posi ve feedback also for nega ve values: someone wants to have a thermal 

beep also for example at -0.3. If  you are  going down at -0.3 mt/sec you are in  a thermal 

indeed, because even if you are going down the air is going up. It just happens that your 

glider has a minimum sink rate lower than the thermal. However you can put the upT down 

to -0.7. Obviously to avoid conflict in case the dwT is set to a higher value it will be automa -

cally adjusted at -0.1 lower than the upT. If the upT is set to values <= 0 it will be produced a 

special audio feedback.

• 

dwT: 

Down Threshold (in meters per seconds or feet per seconds), this is the value for which 

you want the Jb-L20 gives you a nega ve audio feedback. It means you are going down.

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vol: 

the volume can be set to 100%  50% or MUTE

• 

snd: 

you can choose between

 

2 different type of sounds. 

RELAX 

has a lower frequency. 

Jb 

CLASSIC

 has higher frequency , like the Jb MINI (the previous model without display) 

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res: 

RESPONSIVENESS , how fast you want the instrument reacts to thermals and how fast 

you want V+ and V- are updated.  Responsiveness can be 

NORMAL 

or 

FAST

.

NORMAL

: Will  use a filter of 1 second for the first thermal beep feedback. Then the instrument 

will give feedback and will be responsive every 0.5 seconds  ll the end of the thermal. If the 

Jb-L20 doesn’t detect another thermal within 1 second from the last thermal the 1 second 

filter will be ac vated again. This is done to cut out temporary “shaking”. This means also that 

if you set Jb to +0.1 the first thermal will be detected a er 10 cm of varia on , but the beep 

will be produced a er 20 cm... then a er 1 second it will become responsive at 10 cm of 

difference, calcula ng varia on every half second. The values V+ and V- will be updated only 

if a certain value is confirmed for at least 1 second. If you get a +6 for less than 1 second it will 

not be recorded as V+ (max ascent, ver cal speed value). Suitable for students. 

FAST

: No filter of 1 second, furthermore another algorithm is used to let Jb-L20 be more sensi ve. 

The values V+ and V- are updated immediately. Suitable for pilots with over 100 hrs...

• 

unit: 

Al tude can be set in 

meters 

or 

feet

, and the variometer can be in  mt/sec  or  /sec

Содержание Jb-L20

Страница 1: ...stands for ver cal Volume icons 100 50 MUTE Then we have Unit can be meters or feet The al tude in rela on to the takeoff It is set to 0 when you turn on Jb L20 Then there is a chronometer that starts in the moment you turn on It can be reset by Btn DOWN The ba ery last about 15 hours when the icon starts to blink you s ll have about 1 hour of flying me remaining and The analogical bar shows the ver...

Страница 2: ... be taken in the First Menu page PWR OFF switches off the instrument just a er you confirm by pressing the Jp bu on Fly Mode takes you back to the Flying mode page LED is the back light you need to select it with the Jp bu on and then change the value to on by the bu on down or up then you need to confirm with the Jp bu on You can fly with the back light on if you like the effect of black on white but ...

Страница 3: ...edback It means you are going down vol the volume can be set to 100 50 or MUTE snd you can choose between 2 different type of sounds RELAX has a lower frequency Jb CLASSIC has higher frequency like the Jb MINI the previous model without display res RESPONSIVENESS how fast you want the instrument reacts to thermals and how fast you want V and V are updated Responsiveness can be NORMAL or FAST NORMAL...

Страница 4: ...ange the contrast of the display Already set to op mal contrast but if you want to adjust it is possible LNG language English or Chinese can be set Factory Reset if you Jp on that the instrument is reset to factory values Charging the Jb L20 Simply connect the instrument to a micro USB cable The Jb L20 will be charged in about 3 hours if the ba ery is completely flat ...

Страница 5: ...l drivers automa cally however we will not use them Instead we will reenumerate the USB that will be recognized as USB HID peripheral thus not requiring drivers Press Btn DOWN Then confirm by Jp bu on When the text on the right will appear you should read and press Jp one more me Don t be alarmed if the screen will be empty The instrument is just in USB HID mode ready to receive the update by USB J...

Страница 6: ... able HIGH LOW MUTE 2 Sound modes se able Jb CLASSIC and RELAX Durable Scratch Resistant Acrylic panel cover the LCD back light available OLD GUY MODE if set to on increases the size of the numbers in the main screen so you don t need reading glasses while you are flying All the se ng will be stored in memory and will be retained even if the ba ery is drained flat or removed Unit of measure se able ...

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