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Creating a Test Plan - SRRC 5G ​

The SRRC 5G option is used for China SRRC (State Radio Monitoring Center) type approval testing of micro-power products in the 5 GHz band. When creating a test plan, select the Type (technology) first: RLAN / Proprietary. Each type is described separately below.

RLAN ​

SRRC_5G_RLAN_overview

  • Title: Test plan name, entered by the user, e.g., RLAN / WiFi-5G.

  • Type: Technical category, select RLAN here.

  • Num of Chains: Number of transmit chains (antennas) the product has.

  • Band: Operating bands supported by the product, multi-select: 1 / 2 / 4 and the cross-band combination 1+2. Band 1+2 refers to the entire 5150 ~ 5350 MHz range: if the product supports 160MHz bandwidth, the channel at 5250MHz spans both Band 1 and 2; if the product does not support 160MHz bandwidth, Band 1+2 does not need to be selected.

  • Mode: Modes supported by the product (required): 802.11a / n / ac / ax / be. After checking a mode, select the corresponding Bandwidth (20 / 40 / 80 / 160 MHz) and TX Type (SISO / MIMO).

  • RU Config: RU (Resource Unit) configurations supported by 802.11ax / be devices. The Full RU of each bandwidth is required; select the other RU configurations according to the product's actual support. Displayed after 802.11ax / be is checked.

  • Carrier Wave: Whether the product supports carrier wave transmission. The SRRC carrier frequency tolerance may only be tested in carrier wave mode, so only Yes can be selected here.

  • Switch Box: Whether to use a Switch Box. If a Switch Box has not been purchased, select No, and the product will be directly connected to the spectrum analyzer for testing.

  • Antenna Gain:

    • Title: Antenna number, named sequentially by default as 1, 2, 3, 4..., or manually input other names according to customer requirements.

    • Gain: Gain of each antenna in the corresponding band (Band).

    • Cable Loss: Cable loss of the RF cable from the product's antenna port to the Switch Box (RF port of the switch) or the SA (spectrum analyzer). How to Create Common Cable Loss.

    • Switch Box Port: Port number of the switch connected to the product's antenna.

    • Item: Test items for each antenna; the numbers correspond as follows:

      • (S5001) EIRP

      • (S5002) E.I.R.PSD

      • (S5003) Operating Frequency Range

      • (S5004) Occupied Bandwidth

      • (S5005) Frequency Error (carrier frequency tolerance)

      • (S5006) Conducted Spurious Emission

      • (S5008) Adaptivity (Channel Access Mechanism)

      The software preselects the default test items according to the technical characteristics. Note: In some cases, test parameters are mutually referenced between items; it is recommended to create the test plan with the default items.

Proprietary ​

SRRC_5G_Proprietary_overview

  • Type: Technical category, Proprietary (custom product).

  • Band: Same as RLAN.

  • Mode: Custom mode table:

    • Title: Mode number; other names can be manually input according to customer requirements.

    • Nominal BW: Sets the nominal bandwidth occupied by the signal on the spectrum.

    • TX Type: Transmission type, SISO / MIMO.

    • LCH / MCH / HCH: Low / middle / high channel frequency settings (MHz).

    • CSP: Channel Spacing.

    • Action: Used to add / delete mode configuration rows.

  • Carrier Wave: Whether the product supports carrier wave transmission. The SRRC carrier frequency tolerance may only be tested in carrier wave mode, so only Yes can be selected here.

Switch Box / Antenna Gain are the same as RLAN and are not repeated here.

Advanced Setting and Special Eut Settings ​

SRRC_5G_advanced

The following settings can generally be kept at their default values. Adjust them only when the test results are abnormal or there are special test requirements.

  • VSG ALC State: Power ALC (Automatic Level Control) state of the vector signal generator (ON / OFF). When ALC is ON, the signal generator automatically adjusts the output level to compensate for output power drift caused by temperature changes, signal attenuation and other factors; when OFF, it no longer adjusts actively. Used for the Adaptivity test.

  • Channel Config: Channel configuration, Default or Custom (manually customized channels).

  • Hide Image Elements: Select the elements to hide in report images (e.g., the Ant antenna marker).

  • Check Margin: Test margin check. Select an Item and fill in Value(dB); when the margin between the test result and the limit is smaller than the set value, the system will flag it.

  • RU POS Show: How the RU position is displayed in the report: POS / POS Number / POS And POS Number.

  • RU Priority: RU test priority: Full RU First or Sequence (in the order RU26 → RU52 → RU106...).

  • Special Setting: Special settings. Options prefixed with [D] are debug options and do not need to be checked for normal testing:

    • [D] Virtual Data / [D] Random Data / [D] Ignore Eut Confirm / [D] Random Status: Debug options.

    • DC One Mode: Only one duty cycle is tested per mode.

    • Meas MCH: Whether to measure the middle channel. By default SRRC only measures the LCH and HCH; if the customer has a special requirement to measure the MCH, simply check this option.

  • Version: Select the regulation version: Current / Latest. The default value can be changed on the Setting page.

  • Min Power: Sets the minimum power (dBm); 0 means automatic.

  • Data Rate: Data rate, multi-select: Low (low rate) / High (high rate).

  • ADA Delay: Delay (ms) for the Adaptivity test. The default value can be changed on the Setting page.

Corresponding software option: SRRC 5G