Ericsson LBI-39001 Návod k obsluze stáhnout pdf (Strana 22)

3.1.3.2.4. Frame Format

This procedure describes how to set the frame format on the DS1 signal for DG-A or DG-B.

1. Verify that the display on ACU(DS1) indicates either ND4E or LINE.

If ND4E is indicated, go to step 2.

If LINE is indicated, go to step 4.

2. Press the right or left arrow key to indicate LINE.

3. Verify that the display on ACU(DS1) indicates LINE, and go to step 4.

4. Press the ENTR key.

5. Verify that the display on ACU(DS1) indicates CLK.

6. Note: DG-A is Digroup A and DG-B is Digroup B.

Press the right arrow key to indicate DG-A or press the right arrow key twice to indicate DG-B, and press the ENTR

key.

7. Verify that the display on ACU(DS1) indicates FRAM, and press the ENTR key.

8. Verify that the display on ACU(DS1) indicates SF or ESF.

9. Note: Super Frame (SF) mode or Extended Super Frame (ESF) mode is selected as the frame format on the DS1

signal. In the SF mode, 1 multi-frame consists of 12 frames. In the ESF mode, 1 multi-frame consists of 24 frames.

The factory default setting is SF.

Select SF or ESF by using the right or left arrow key and press the ENTR key.

10. For Digroup A, DG-A is indicated. For Digroup-B, DG B is indicated.

Verify that the display on ACU(DS1) indicates DG-A or DG-B, and press the ENTR key.

11. Verify that the display on ACU(DS1) indicates CODE.

12. Return to LINE using the RTN key.

13. The procedure is completed.

3.1.3.2.5. Line Coding

This procedure describes how to set the line code on the DS1 signal for DG-A or DG-B.

1. Verify that the display on ACU(DS1) indicates either ND4E or LINE.

If ND4E is indicated, go to step 2.

If LINE is indicated, go to step 4.

2. Press the right or left arrow key to indicate LINE.

3. Verify that the display on ACU(DS1) indicates LINE, and go to step 4.

4. Press the ENTR key.

5. Verify that the display on ACU(DS1) indicates CLK.

6. Note: DG-A is Digroup A and DG-B is Digroup B.

Press the right arrow key to indicate DG-A or DG-B, and press the ENTR key.

7. Verify that the display on ACU(DS1) indicates FRAM.

8. Press the right arrow key to indicate CODE, and press the ENTR key.

9. Verify that the display on ACU(DS1) indicates ZCS or B8ZS.

10. Note: Zero Code Suppression (ZCS) or Bipolar with 8 Zeroes Substitution (B8ZS) is selected as the line code on the

DS1 signal. ZCS suppresses all zeroes by transforming the seventh bit of a channel to 1 when all of the 8-bit data

assigned to each channel have changed to zero. B8ZS changes all consecutive zeroes of 8-bit data to the pattern and

restores the pattern to all consecutive zeroes of 8-bit data at the receiving side. The factory default setting is ZCS.

Select ZCS or B8ZS by using the left or right arrow key and press the ENTR key.

11. Note: For Digroup A, DG-A is indicated. For Digroup B, DG-B is indicated.

Verify that the display on ACU(DS1) indicates DG-A or DG-B, and press the ENTR key.

12. Verify that the display on ACU(DS1) indicates EQL.

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