Motorola M3097 Service Manual download pdf (Page 60)

Motorola Confidential Proprietary

Test ProceduresService Manual

49

BER Measurements

DIGITAL MEASUREMENTS

%

Amplitude

Traffic Chan

333

DVCC

To Scre en

CALL CNT L

CALL CNFG

ANLG MEAS

SPEC ANL

DIG MEAS

More

2.8995

Loopback BER

DTC Meas

BER

Arm

Disarm

Bits Read: 10140

-110.0

Slot

1

dBm

BER Bits

10000

1

Cntrl Chan

DCCH DVCC

42

Trig Type

2x Frame 128

Figure 35. Digital Measurements Screen

BER Measurement Procedure

1 Make sure the Test Set is in Active

mode.

2 Select DIG MEAS from the To

Screen menu.

3 Select the DTC Meas field to display

a list of available tests.

4 Select BER from the list.

5 Enter the number of bits to be mea

sured in the BER Bits field. (Note: the

number of bits actually read will be

calculated in whole frames.)

6 Amplitude should be set to -110 dBm.

7 Traffic Chan to 333.

8 Slot to 1.

9 DVCC to 1.

10 Cntrl Chan to 42.

11 DCCH DVCC to 128.

12 Put the mobile into test mode and en

ter the proper test commands for BER

reading.

13 Select ARM.

14 After the actual number of bits has

been transmitted and received, the

BER should be displayed.

PCS Mode Handset Commands:

1 Enter 576# (Loopback mode)

2 11333# (Loads Synthesizer Channel)

3 Display prompt “Y” (enter desired

time slot, for this test enter 1)

4 Display prompt “Y” (enter band, 0 =

800, 1 = 1900)

5 Set power level to step 2 (122#)

6 Turn on transmitt carrier (05#)

The BER measured on the communications

analyzer must be less than or equal to 2%.

BER Measurements

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 132 133

Comments to this Manuals

No comments