continous mode for FCC certification with CYW4343W

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bastienD
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First question asked Welcome!

Hello,

We are doing some FCC certification with a CYW4343W (embedded in Murata chipset  LBEE5KL1DX) . The laboratory, which is doing SAR measurement, experiences an issue (see capture_oscillo) : it seems the continous transmission is not really continous.

Here below are commands used to configure the chipset wifi :

  • wl down
  • wl mpc 0
  • wl phy_watchdog 0
  • wl glacial_timer 0x7FFFFFFF
  • wl country ALL
  • wl band b
  • wl 2g_rate -r 1
  • wl chanspec 13/20
  • wl scansuppress 1
  • wl up
  • wl phy_forecal 1
  • wl phy_txpwrctrl 1
  • wl txpwr1 -1
  • wl txpwr1 -o -d 17
  • wl pkteng_start 00:11:22:33:44:55 tx 40 1024 0

Can you help us to understand the issue please?

Thanks,

BR

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1 Solution
raks_99
Moderator
Moderator
Moderator
First question asked 250 replies posted 250 sign-ins

Hi bastein,

Do you mean the packet transmission has a gap(delay in between) or you want the spectrum to be continuous? 

start packet engine tx usage: wl pkteng_start <xx:xx:xx:xx:xx:xx> <tx|txwithack> [(async)|sync |sync_unblk] [ipg] [len] [nframes] [src]

Here the 'ipg' stand for interpacket gap in µs. This can be reduced if you want less gap between each packet transmission.

Can you try this sequence of commands out, without the glacial timer-

wl down
wl mpc 0
wl phy_txpwrctrl 0
wl country DE/0 (or any other country supported in clm)
wl phy_watchdog 0
wl band b
wl chanspec 1/20
wl nrate -m 7
wl up
wl phy_forcecal 1
wl phy_activecal
wl scansuppress 1
wl txchain 1
wl txpwr1 -o -d 7
wl pkteng_start 00:11:22:33:44:55 tx 100 1024 0

Thanks and Best Regards,

Rakshith

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1 Reply
raks_99
Moderator
Moderator
Moderator
First question asked 250 replies posted 250 sign-ins

Hi bastein,

Do you mean the packet transmission has a gap(delay in between) or you want the spectrum to be continuous? 

start packet engine tx usage: wl pkteng_start <xx:xx:xx:xx:xx:xx> <tx|txwithack> [(async)|sync |sync_unblk] [ipg] [len] [nframes] [src]

Here the 'ipg' stand for interpacket gap in µs. This can be reduced if you want less gap between each packet transmission.

Can you try this sequence of commands out, without the glacial timer-

wl down
wl mpc 0
wl phy_txpwrctrl 0
wl country DE/0 (or any other country supported in clm)
wl phy_watchdog 0
wl band b
wl chanspec 1/20
wl nrate -m 7
wl up
wl phy_forcecal 1
wl phy_activecal
wl scansuppress 1
wl txchain 1
wl txpwr1 -o -d 7
wl pkteng_start 00:11:22:33:44:55 tx 100 1024 0

Thanks and Best Regards,

Rakshith

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