CMS 4´2 UNIT TEST & PROGRAMMING PROCEDURE

(MUX 4x2 Configuration)

CONFIGURATION OF TEST BENCH

REQUIRED HARDWARE

REQUIRED SOFTWARE

TEST PROCEDURE

EYE INSPECTION

PROGRAMMING PROCEDURE

PROCESSOR TEST (Self Test-Memory-Display-NMS ports-Outdoor Unit-Card Indication-SPI-External I/O)

DISPLAY REPRESENTATION

MUX 4X2 TEST

HITLESS SWITCH TEST

PARALLEL ALARMS TEST

MASK OF THE PULSE CHECK

SUB-MUX AND DATA INTERFACE TEST

SWITCH ALARM TEST

TROUBLESHOOTING (Under Construction)

CONFIGURATION FILES

CONFIGURATION OF TEST BENCH

REQUIRED HARDWARE

The equipment needed for testing, are:

Figure . Reference rack used for the tests

REQUIRED SOFTWARE

The following software must be installed on the PC.

• WebPack Device Programmer
• SPI configurator

TEST PROCEDURE

EYE INSPECTION

Check whether all the appropriate solder straps and jumpers are in their correct position. The solder straps and jumpers location on the PCB is shown the following figures.

Figure

Figure

Also check whether the jumpers in Table 1 are in the correct position.

Table 1

PROGRAMMING PROCEDURE

For this procedure we must use the JTAG Programming Cable and the WebPack Device Programmer Software.

Perform the following steps:

1. Connect the CMS card with the reference rack.

2. Connect the JTAG Programming Cable, first to the parallel port of the PC and then to the backplane pin-header, UB_27, as shown in Table 2. The UB_27 pin-header is located at the rear side of the rack.

Table 2

3. In backplane pin-header, UB_28, we must jumper pin 1 with pin 2. The UB_28 pin-header is located at the rear side of the rack.

4. Switch ON the power in the Reference Power Supply Card 1 in the reference rack.

5. Then, run at the PC the WebPack Device Programmer Software. From the FILE menu we select OPEN 19219g620t and from the browser window we select the "CMS.cdf" file, which is located in the C:/CIU/CMS/ directory. Select from the JTAG chain the XC18V02_vq44 device. From the OPERATIONS menu we select PROGRAM. We must tick the following boxes, Erase Before Programming, Verify and Load FPGA (if it is not already selected).

6. Press the OK button. It will start the programming and verification procedure.

PROCESSOR TEST (Self Test of Memory-Display-NMS ports-Outdoor Unit-Card Indication-SPI-External I/O)

The Processor TEST will check the following sections on the Central Interface Unit (CIU):

• Static Ram
• Boot Flash Memory
• File System Flash Memory
• Main Storage Flash Memory
• Serial RS-232 interface
• 1x8 Display
• Push Buttons
• 4 Input / 4 Output interface
• Serial Peripheral Interface (SPI)
• Real Time Clock (RTC)
• Out Door Unit 1 & 2 Communication Path
• Buzzer
• HIS / CPU LEDs

Upon Power up, the system performs a full Ram test. Bypassing the initial ram test is possible while resetting the CIU card to press the EXIT button for a few seconds. The CIU card will display RAM FAIL or RAM PASS PRESS ENTER to continue the Testing.

The testing is done with the use of the program "SPI BUS TESTER" shown in the Figure below, and it can me initiated in two modes, Automatic Test Mode or Manual Test Mode.

To choose which Test Mode to perform, simply select the "DATA D7-D0" section to all zeros e.g. "00000000" for Automatic Test Mode or select Manual Test Mode for individual testing (select "DATA D7-D0" e.g. 00000001 for testing the Display) and then press the button "test" for execution.

Figure

Test Number 12 Requires A23 & B23 SORTED at the back of the backplane of the rack and also C23 & D23 respectively.

Figure

For tests 1, 6 and 10 require the Test Operator Intervention in order to complete them.

During test 1, the 1´8 LCD will spin the following characters " / - | \ " and will complete the test by displaying "HELLO!!!". For the successful completion of the test, all the pixels on the display matrix should flash ON and OFF.

For test 6, the use of the external I/O board is required. The board consists of 4 LEDs for output indication, and 4 switches for selecting input alarm activation commands. When starting the test, the 4 LEDs will turn ON and OFF one at a time, so it can test the 4 output lines. After the output test is completed, the test operator should test the 4 input lines by switching the 4 switches ON and OFF one at a time and observing the 1´8 LCD for switch indication. The test is completed successfully when all 4 LEDs turn ON and OFF and when the user switches ON and OFF the 4 switches we get a confirmation of switch activity on the display.

Figure . External I/O board

In test 10 when the respective button is held pressed (Enter, Exit, Up, Down), then on the 1´8 LCD the respective word (Enter, Exit, Up, Down) should be displayed. The test operator should verify whether the button has been pressed and then released in order to successfully complete the test.

In order for Test 6 to continue, the operator needs to PRESS ENTER

In order for Test 10 to continue, the operator needs to PRESS SIMULTANIOUS ENTER & EXIT.

DISPLAY REPRESENTATION

When testing has finished operator MUST OPEN 19219g620t Jumper J1E.

MUX 4X2 TEST

For this procedure we must connect the serial cable, first to the serial port of the PC and then to the NMS 1 port to the CMS card on the rack. The test procedure is split into the following steps.

1. Run the SPI Configurator Software on the PC. Select COM 1 (or COM 2) from the Port Selection menu. Press the LOAD ACTIONS button, click OPEN 19219g620t and on the browser window select the C:/CIU/CMS_Mux4x2/liu_mux4x2.txt file. After the file is loaded, the following should occur: The leds LDM, LDI2, LDI3, LDI4, LDI5 of the PCB, must be switch ON.

2. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/CMS_Mux4x2/loop_framer_a_b.txt file. The green led LDM must be switch OFF but the red leds shall remain ON.

3. Set the following settings on the BER meter:

Then connect the 4X2 75-Ohm system as follows:

Figure

If the system under test is a 4X2 120-Ohm system, the connection should be as follows:

Figure .

The connections within the D25 Female connector and with the BER tester in the case of the 120-Ohm system, are shown in the following table:

The pin assignment on the D25 Male connector on the front panel of the system, is:

After all the connections as shown above have been made, the green led must remain OFF and the red leds must be switched OFF.

At the BERmeter we must see NO ERRORS.

The BER Measurement takes place for about 1 min.

4. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/CMS_Mux4x2/powerdown_1_Mux4x2.txt file. The leds LDI2 and LDI3 must be switched ON and leds LDI4 and LDI5 must remain OFF.

5. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/ CMS_Mux4x2/powerdown_2_Mux4x2.txt file. The leds LDI2 and LDI3 must be switched OFF and leds LDI4 and LDI5 must be ON.

6. Press the LOAD ACTIONS button, click OPEN 19219g620t , and from the browser window select the C:/CIU/CMS_Mux4x2/liu_mux4x2.txt file. The leds LDI(2,3,4,5) must be turned OFF.

7. To test point TPM1 (Figure 2) measure with the multimeter, +2.5V + 0.2V.

8. To test point TP1D (Figure 2) measure with the multimeter, +5.0V + 0.25V

9. To test point TPM12 (Figure 2) measure with the oscilloscope, +2.5 V with ripple 0.5V P-P. Set the oscilloscope to 1V/div and 100 S/div accuracy for better observation of the ripple.

10. To test point TPM3 (Figure 2) measure with frequency meter, 8.192 MHz, from 8191590 Hz to 8192410 Hz.

11. To test point TPM2 (Figure 2) measure with frequency meter, 8,448 MHz, from 8195000 Hz to 8701000 Hz, range

HITLESS SWITCH TEST

1. Press the LOAD ACTIONS button, click OPEN 19219g620t , and from the browser window select the C:/CIU/CMS_Mux4x2/rx_path_mux4x2.txt file. We must read in SPI Configurator window the following value [00].

2. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/CMS_Mux4x2/switch_b_mux4x2.txt file.

3. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/CMS_Mux4x2/rx_path_mux4x2.txt file. We must read in SPI Configurator window the following value [02].

PARALLEL ALARMS TEST

1. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/CMS_Mux4x2/parallel_1_mux4x2.txt file. We must read in SPI Configurator window the following value [FF].

2. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/CMS_Mux4x2/parallel_2_mux4x2.txt file.

3. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/CMS_Mux4x2/parallel_1.txt file. We must read in SPI Configurator window the following value [00].

MASK OF THE PULSE CHECK

Change the Test Pattern on the BERmeter from PRBS-15 to pattern "1000". Then make the connections as shown in the following figures, depending on whether the system under test is 75-Ohm or 120-Ohm. For the connection to the Oscilloscope we must use a 75-Ohm termination module. The shape of the pulse must already be stored in the memory of the Oscilloscope, and its characteristics are shown in the figure that follows.

Figure

In the case of the 75-Ohm system, repeat the same procedure for all of 4 channels to verify that the mask pulse is according to G.703 specs. After finishing the test, change the test pattern back to PRBS-15.

Figure

In the case of the 120-Ohm system the test cable assembly, which connects the system with the BER tester, is shown in the following figure. Tests should be repeated for all the system tributaries. Note that the way the (+) or (-) inputs of each tributary is connected to the BER tester or to the 120-Ohm termination module, is not significant.

Figure .

Use the pin assignment on the D25 Male connector given earlier, in order to construct the test cable assembly, if not already constructed.

SUB-MUX AND DATA INTERFACE TEST

First of all we must make the following settings to the Datacom Analyser.

Before we start the procedure we must connect the serial cable, first to the serial port of the PC and then to the NMS1 port of the CMS. The test procedure is split into the following steps.

Run on the PC, the SPI Configurator Software. Select COM 1 (or COM 2) from Port Selection menu. Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the C:/CIU/CMS_Mux4x2/Submux_mux4x2.txt file.

2.) Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the

C:/CIU/CMS_Mux4x2/loop_framer_a_b.txt file.

3.) Then connect the External Distribution Board, first to the AUX connector of the CMS card and then the D-type connector (D9 or D25) to the Datacom Analyser. The connections are shown in the following figure.

Figure .

To the Datacom Analyser we must see NO ERRORS.

The BER Measurement takes place for about 1 min.

SWITCH ALARM TEST

1.) Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the

C:/CIU/CMS_Mux4x2/submux_tx_path.txt file. We must read in SPI Configurator window the following value [14].

2.)Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the

C:/CIU/CMS_Mux4x2/submux_rx_path.txt file. We must read in SPI Configurator window the following value [00].

3.) Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the

C:/CIU/CMS_Mux4x2/submux_switch_path.txt file. When the file loads, the Datacom Analyser may have errors for a while. We reset the instrument and after that we must have the indication NO ERRORS

4.) Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the

C:/CIU/CMS_Mux4x2/submux_tx_path.txt file. We must read in SPI Configurator window the following value [98].

5.) Press the LOAD ACTIONS button, click OPEN 19219g620t and from the browser window select the

C:/CIU/CMS/submux_rx_path.txt file. We must read in SPI Configurator window the following value [02].

TROUBLESHOOTING (Under Construction)

According to the nature of the problem during the programming and test procedure look the below instructions.

Programming Procedure - Troubleshooting

In case that the CMS card is not programming follow the below steps (assuming that the software is already installed and we already select the appropriate file).

a.     Check if the power of rack is ON.

b.     Check if the JTAG cable is connected properly with the rack

c.     Check if, in UB_28 pin-header there is a jumper to pin 1 with pin 2.

d.     Check if the voltage in Test Point TPM1 is +2.5V +0.2V.

If all the above hardware settings are correct we must perform the following actions in the WebPack Device Programmer software.

From the pull down menus, go to OUTPUT menu and select CABLE RESET.

Then try to program again the device.

Go to the OUTPUT menu and select CABLE SETUP. Check if it is selected the parallel cable selection.

If there is still a problem then close the software and run it again.

If the there is still a problem then let the PCB out of test for further inspection.

CONFIGURATION FILES

The following text files are use for the test procedure. These files are located in C:/CIU/CMS directory.

Liu_Mux4x2.txt

Write at address : 10, 02 14

Write at address : 10, 03 04

Write at address : 11, 14 18

Write at address : 11, 15 18

Write at address : 11, 16 00

Write at address : 11, 17 00

Write at address : 12, 14 18

Write at address : 12, 15 18

Write at address : 12, 16 00

Write at address : 12, 17 00

Loop_Framer_a_b.txt

Write at address : 0A, 08 20

Write at address : 0C, 08 20

Powerdown_1_Mux4x2.txt

Write at address : 11, 14 58

Write at address : 12, 14 18

Powerdown_2_Mux4x2.txt

Write at address : 11, 14 18

Write at address : 12, 14 58

Rx_path_mux4x2.txt

Read at address : 10, 07

Switch_b_path_mux4x2.txt

Write at address : 10, 02 98

Parallel_1_Mux4x2.txt

Read at address : 10, FF

Parallel_2_Mux4x2.txt

Write at address: 0A, 24 00

Write at address: 0C, 24 00

Submux_Mux4x2.txt

Write at address: 10, 02 14

Submux_tx_path_mux4x2.txt

Read at address: 10, 02

Submux_rx_path_mux4x2.txt

Read at address: 10, 07

Submux_switch_path_Mux4x2.txt

Write at address: 10, 02 98