Constant Transmit

The Constant Transmit (tx) test transmits a continuous stream of packets on the specified channel at the specified rate and channel width at the maximum power allowed for that combination in the configured regulatory domain. This is the test that will be required for most regulatory compliance screening. Transmission occurs on both antennas for 2x2 radios (Sona IF573) and on a single antenna for 1x1 radios. 1x1 radios with antenna diversity (2 antennas) transmit on the configured antenna only.

See the following table for rate descriptions and valid specifiers used with the -r parameter:

Rate Type Specifier
Legacy (802.11b) 1, 2, 5, 11
Legacy (802.11a/g) 6,9,12,18,24,36,48,54
HT (802.11n) h0-h7 (1x1 radios), h0-h15 (2x2 radios (Sona IF573))
VHT (802.11ac) v0-v9
HE (802.11ax) e0-e11

Note: Ensure that Test Mode has been configured for 2.4G/5G or 6G as required if testing with a Sona IF573 radio

Continuous Transmit on channel 1 (20 MHz), legacy rate 5.5Mbps

lru :>tx -c 1 -b 20 -r 5

Continuous Transmit on channel 36 (20 MHz), HT (802.11n) rate MCS7

lru :>tx -c 36 -b 20 -r h7

Continuous Transmit on channel 38 (40 MHz), VHT (802.11ac) rate MCS4

lru :>tx -c 36 -b 40 -r v4

Note: When transmitting using a 40/80 channel width specify the 20 Mhz control channel and bandwith, and LRU will determine the appropriate secondary channel(s) to use.

Continuous Transmit on 6GHz channel 1 (20 MHz), HE (802.11ax) rate MCS0 (Sona IF573 only)

lru :>tx -c 1 -b 20 -r e0

Note: This assumes that Test Mode has been configured for 6G. It is also possible to set the test mode directly on the test command line with the -m parameter. The test mode setting will persist to future tests as long as the lru is running regardless of how it was configured:

lru :>tx -c 1 -m 6g -b 20 -r e0

Constant Transmit - OFDMA (Partial RU)

The Sona IF573 supports partial RU OFDMA transmissions. These transmissions are supported by the lru by additionally specifying RU size and index with --ru <size>-<index>.

See the following table for valid partial RU sizes and index values for each supported channel width:

20MHz Channel Width

RU Size RU Index Range
26 1-9
52 1-4
106 1-2
242, 484, 996 1

40MHz Channel Width

RU Size RU Index Range
26 1-18
52 1-8
106 1-4
242 1-2
484, 996 1

80MHz Channel Width

RU Size RU Index Range
26 1-37
52 1-16
106 1-8
242 1-4
484 1-2
996 1

Continuous Transmit on 6GHz channel 1 (20 MHz), HE (802.11ax) rate MCS0 with OFDMA partial RU size 26 at index 1 (Sona IF573 only)

lru :>tx -c 1 -m 6g -b 20 -r e0 --ru 26-1

Carrier Wave

The Carrier Wave (cw) test transmits an unmodulated signal at the center frequency of the specified channel. This test is generally not required for regulatory compliance screening, but may be requested in some jurisdictions. This test requires only the channel and channel width.

Carrier Wave on channel 1 (20MHz)

lru :>cw -c 1 -b 20

Carrier Wave on channel 38 (40MHz)

lru :>cw -c 36 -b 40