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Failed to configure litepoint with PSDU length >=2305 for 11b rates, why?

Question asked by crazy1982 on Oct 11, 2017
Latest reply on Oct 13, 2017 by crazy1982

Failed to configure Litepoint (IQXEL 160) with PSDU length >=2305Bytes for any 11b data rates:

Configuration and error details:

<<SNIP>>

(4.072) (2017-10-11 12:28:1.2432) =WIFI; CONF:WAVE:STAN B Set the standard for WiFi packet generation to B

(4.072) (2017-10-11 12:28:1.2435) =WIFI; CONF:WAVE:PSDU:DATA:TYPE RANDOM Set the PSDU type to RANDOM

(4.072) (2017-10-11 12:28:1.2436) =WIFI; CONF:WAVE:PSDU:NBYTES 2305 Set the PSDU length to 2305 bytes

(4.072) (2017-10-11 12:28:1.2437) =WIFI; CONF:WAVE:GAP 0.000020 Set the duration of idle time between packets to 0.000020 seconds

(4.073) (2017-10-11 12:28:1.2439) =WIFI; CONF:WAVE:SCR 12 Set the scrambler init number to 12

(4.073) (2017-10-11 12:28:1.2440) =WIFI; CONF:WAVE:PSDU:CRC ON Set the CRC to ON

(4.073) (2017-10-11 12:28:1.2442) =WIFI; CONF:WAVE:NETX 0 Set the number of extra TX antennas to 0

(4.073) (2017-10-11 12:28:1.2443) =WIFI; CONF:WAVE:PSDU:MACH ON Set the MAC header to ON

(4.073) (2017-10-11 12:28:1.2445) =WIFI; CONF:WAVE:PSDU:MACH:FCON:TYPE DATA Set the MAC frame type to DATA

(4.073) (2017-10-11 12:28:1.2446) =WIFI; CONF:WAVE:PSDU:MACH:FCON:USER 0802 Set the MAC frame type to 0802

(4.073) (2017-10-11 12:28:1.2448) =WIFI; CONF:WAVE:PSDU:MACH:ADDR1 112233445566 Set the reciever address (in MAC header) to 112233445566

(4.074) (2017-10-11 12:28:1.2450) =WIFI; CONF:WAVE:PSDU:MACH:ADDR2 FEDCBA987654 Set the transmitter address (in MAC header) to FEDCBA987654

(4.074) (2017-10-11 12:28:1.2451) =WIFI; CONF:WAVE:PSDU:MACH:ADDR3 FEDCBA987654 Set the BSSID address (in MAC header) to FEDCBA987654

(4.074) (2017-10-11 12:28:1.2452) =WIFI; CONF:WAVE:DSSS:DRAT RATE11 Set DSSS data rate to RATE11

(4.074) (2017-10-11 12:28:1.2454) =WIFI; CONF:WAVE:DSSS:PRE LONG Set DSSS preamble LONG

(4.074) (2017-10-11 12:28:1.2455) =VSG1; FREQ:LOOF 0 Set the LO offset to 0 Hz

(4.074) (2017-10-11 12:28:1.2456) =VSG1; SRAT 160000000 Set the sample rate to 160.0 MHz

(4.074) (2017-10-11 12:28:1.2458) =VSG1; FREQ 2442000000 Set the VSG center frequency to 2442.0 MHz

(4.075) (2017-10-11 12:28:1.2459) =VSG1; POW:LEV 0 Set the VSG power level to 0 dBm

(4.075) (2017-10-11 12:28:1.2461) =VSG1; WAVE:EXEC OFF, WSEG1 Turn wave off

(4.075) (2017-10-11 12:28:1.2462) =VSG1; POW:STAT OFF Turn VSG1 power off

(4.075) (2017-10-11 12:28:1.2463) =VSG1; WAVE:DEL:ALL Delete all waves in wave list.

(4.075) (2017-10-11 12:28:1.2465) =VSG1; WLIS:CAT:DEL:ALL Delete all wave segments.

(4.075) (2017-10-11 12:28:1.2466) =WIFI; WAVE:GEN:MMEM '/user/wlanlite_radio_test.iqvsg', 'Wlanlite radio test wavefile. RESERVED. DO NOT OVERWRITE' Generate wave file /user/wlanlite_radio_test.iqvsg

(4.075) (2017-10-11 12:28:1.2467) =SYS; *WAI Wait for write to file system to finish

(4.076) (2017-10-11 12:28:1.2469) =VSG1; WAVE:LOAD '/user/wlanlite_radio_test.iqvsg' Load waveform file /user/wlanlite_radio_test.iqvsg from IQxel file system to the VSG

(4.076) (2017-10-11 12:28:1.2470) =VSG1; WLIS:WSEG1:DATA '/user/wlanlite_radio_test.iqvsg' Load waveform file /user/wlanlite_radio_test.iqvsg into WLIS (wavelist).

(4.076) (2017-10-11 12:28:1.2472) =VSG1; WLIS:COUN 100 Play wavelist '100' times.

(4.076) (2017-10-11 12:28:1.2473) =VSG1; WLIS:WSEG1:NEXT 0 Sets the following wave segment index.

(4.076) (2017-10-11 12:28:1.2474) =VSG1; WLIS:WSEG1:LENG 0 Sets the WSEG1 wave segment length.

(4.076) (2017-10-11 12:28:1.2476) =VSG1; WLIS:WSEG1:STAR 0 Sets the WSEG1 wave segment satrting point.

(4.076) (2017-10-11 12:28:1.2477) =VSG1; WLIST:COUN:ENABLE WSEG1 Enable counter for WSEG1.

(4.077) (2017-10-11 12:28:1.2479) =VSG1; WLIST:WSEG1:SAVE Save the WSEG1 wave segment.

(4.077) (2017-10-11 12:28:1.2480) =VSG1; POW:STAT ON Turn VSG1 power on

(4.077) (2017-10-11 12:28:1.2481) =VSG1; WAVE:EXEC ON, WSEG1 Turn wave on

(4.077) (2017-10-11 12:28:1.2483) =SYS; *WAI; *STB? Wait and get the status byte

(4.108) (2017-10-11 12:28:1.2796) =SYST:ERR:ALL? Get error messages

(4.110) (2017-10-11 12:28:1.2810) =Litepoint error messages: -200,"Execution error; 01:01:002D0019; WIFI; CHAN1; WAVE:GEN:MMEM '/user/wlanli...; Wave generation failed. Invalid PSDU specified: 1"

(4.110) (2017-10-11 12:28:1.2811) -Error setting up the Litepoint: Status Byte = '68'

<<SNIP>>

NOTE: As per IEEE spec, we should able to configure PSDU Length up to 4095Bytes for 11b data rates

 

Did anybody see this problem? Any suggestions/solutions?

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