Motorola I580 service manual Bit Error Rate BER Test, Pass

FIELD LEVEL TEST MODES AND PROCEDURES: Bit Error Rate (BER) Test

8.7Bit Error Rate (BER) Test

Use this test on a unit having any of the following symptoms: resets (RAAAA Type), No Service failures.

Set up the R-2660 for iDEN BER Test, and connect the unit to the RF IN/OUT connector.

Connect the battery eliminator to the unit. Remove the antenna. Set power supply between 5.0 and 12.0 Vdc.

Notes:

1.Confirm the reset log has errors.

2.Place the unit into Test Mode for this test.

3.Watch the unit for resetting during this procedure.

4.Verify the R-2660 has been calibrated and cable continuity is good.

5.In the United States, the Main board can only be replaced and programmed at the factory or iDEN Radio Support Center.

6.The Power, MPX, and MOD test parameters are for factory use only and should not be adjusted by field service personnel (see page 7-2 for default values).

Power up the unit. Enter Test Mode.

Do the following:

1.Press the Menu key, and then the Edit option key.

2.Press the Change option key, and scroll down to 800BER1.

3.Press Select to select the test.

4.Press the Back key, and then press Menu.

The monitor frequency is 806.0125 (Carr#1) for BER1.

Press Start

on unit. Press TX ON. The

RX BER that appears on the display Fail should be 0.0% at -70 dBm. Verify that

the TX BER on the R-2660

is < 0.07%.

Pass

Replace the

Main board, and

repeat the test.

	Note: Ensure that the maximum cable
Lower	loss does not exceed 2 dB.
Gen: to -109 dBm
and check the RX BER in the		Fail
			Replace the
display. The BER should be less than 10%
			Main board, and
when at Gen: -109 dBm. (Freq
			repeat the test.
Error should be less
than 200 Hz.)

Pass

Repeat the

above test using

800BER2, 800BER3,

800BER4; 900BER1, 900BER2,

and 900BER3 in Test Mode.

The monitor frequency is 813.5125		Fail		Replace the
(Carr#601) for 800BER2, 820.9875 (Carr#1199)				Main board, and
for 800BER3, and 824.9875 for 800BER4.				repeat the test.
The monitor frequency is 896.01875 for
900BER1, 898.51875 for
Pass
900BER2 and
900.98125 for	Note: Change offset on R2660 to +39 MHz for 900
900BER3.	MHz (900BER1, 900BER2, and 900BER3).
			Unit passed test. Look for system, cover-
			age, accessory, or software problems.

66 68P80401P05