Downlink Channel (UARFCN)

Last Updated: August 29, 2007

This topic includes:

Supported Downlink Channels and Frequencies

The DL Channel setting specifies the downlink UTRA Absolute RF Channel Number (UARFCN). This determines at what frequency the test set's RF generator will transmit the downlink signal.

The relationship between UARFCN and downlink frequency is described in 3GPP TS 25.101 section 5.

Downlink Frequency and UARFCN, and DL Channel Range

Band

DL to UL Frequency Separation (MHz)

Center Frequency Range (MHz)

UARFCN Equation

UARFCN Range

Applicable Test Set Uplink Channel Range

I
(IMT-2000)

190

2112.4 - 2167.6

increment = 0.2

5 * (center freq in MHz)

10562 - 10838

10562 - 10838

II
(US PCS)

80

1932.4 - 1987.6

increment = 0.2

5 * (center freq in MHz)

9662 - 9938

9662 - 9938

1932.5 - 1987.5

increment = 5

5 * ((center freq in MHz) - 1850.1 MHz)

412, 437, 462, 487, 512, 537, 562, 587, 612, 637, 662, 687

412, 437, 462, 487, 512, 537, 562, 587, 612, 637, 662, 687

III
(DCS/PCS)

95

1807.4 - 1877.6

increment = 0.2

5 * ((center freq in MHz) - 1575 MHz)

1162 - 1513

1162 - 1513

IV

400

2112.4 - 2152.6

increment = 0.2

5 * ((center freq in MHz) - 1805 MHz)

1537 - 1738

1537 - 1738

2112.5 - 2152.5

increment = 5

5 * ((center freq in MHz) - 1735.1 MHz)

1887, 1912, 1937, 1962, 1987, 2012, 2037, 2062, 2087

1887, 1912, 1937, 1962, 1987, 2012, 2037, 2062, 2087

V
(US Cellular)

45

871.4 - 891.6

increment = 0.2

5 * (center freq in MHz)

4357 - 4458

4357 - 4458

871.5, 872.5, 876.5, 877.5, 882.5, 887.5

5 * ((center freq in MHz) - 670.1 MHz)

1007, 1012, 1032, 1037, 1062, 1087

1007, 1012, 1032, 1037, 1062, 1087

VI
(Japan 800)

45

877.4 - 882.6

increment = 0.2

5 * (center freq in MHz)

4387 - 4413

4387 - 4413

877.5, 882.5

5 * ((center freq in MHz) - 670.1 MHz)

1037, 1062

1037, 1062

VII
(UMTS 2600)

120

2622.4 - 2687.6

increment = 0.2

5 * ((center freq in MHz) - 2175 MHz)

2237 - 2563

2237 - 2563

2622.5 - 2687.5

increment = 5

5 * ((center freq in MHz) - 2105.1 MHz)

2587, 2612, 2637, 2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912

2587, 2612, 2637, 2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912

VIII (UMTS 900)

45

927.4 - 957.6

increment = 0.2

5 * ((center freq in MHz) - 340 MHz)

2937 - 3088

2937 - 3088

IX
(UMTS 1700)

95

1847.4 - 1877.4

increment = 0.2

5 * (center freq in MHz)

9237 - 9387

9237 - 9387

X
(UMTS Extended 1.72/2.1 GHz)

400

2112.4 - 2167.6

increment =  0.2

5 * ((center freq in MHz)-1490 MHz)

3112 - 3388

3112 - 3388

2112.5 - 2167.5

increment = 5

5 * ((center freq in MHz)-1430.1 MHz)

3412, 3437, 3462, 3487, 3512, 3537, 3562, 3587, 3612, 3637, 3662, 3687

3412, 3437, 3462, 3487, 3512, 3537, 3562, 3587, 3612, 3637, 3662, 3687

XI

(UMTS 1500 MHz)

48

1478.4 - 1498.4

increment = 0.2

5 * ((center freq in MHz)-736 MHz)

3712 - 3812

3712 - 3812

How to change the DPCH DL Channel:

The DPCH DL Channel setting sets the test set's RF Generator to a specific uplink UARFCN value. Alternatively, you can set the downlink frequency. The DPCH DL Channel setting is located on the RF Generator tab of the RF Control window.

  1. On the front panel, under SCREENS, press the Main/Call key to display the RF Control window.

  2. Select the RF Generator tab.

  3. Set the Control Mode to Auto.

  4. Set DPCH DL Channel to the desired value.

SCPI Command: TRANsceiver:CHANnel:DOWNlink:FDD

How to set the downlink frequency:

The RF Generator's Frequency setting sets the downlink frequency. Alternatively, you can set the DPCH DL Channel. The downlinik Frequency setting is located on the RF Generator tab of the RF Control window.

  1. On the front panel, under SCREENS, press the Main/Call key to display the RF Control window.

  2. Select the RF Generator tab.

  3. Set the Control Mode to Manual.

  4. Set Frequency to the desired value.

SCPI Command: RFGenerator:FREQuency:WCALibration

 

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