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6.2.1.3 SETUP THE FRAME COUNTER:
The Frame Count commands (Figure 14) are used to configure the Frame Counter and are part of the PCM SETUP menu
(Figure 14). The Frame Counter is a binary counter that increments or decrements by one count in each frame.
5.4.10
EXAMPLES OF TDM PCM FORMATS
6.2.2.1 EXAMPLE #1
Output a simple pattern to evaluate a link with a 75% symmetry characteristic
(3 ones for each zero......111011101110.....).
PCM SETUP
Sync Pattern = 0xEEEE 0xEEEE; this is the data value (in HEX)
Bits per Word = 16
Words per Frame = 8
MSB / LSB first = MSB (If set to LSB the bit stream is reversed)
EDIT PCM
1 - LOAD IMM, EEEE; output the desired pattern:
set pc02=load imm
set pv02=0xEEEE
2 – REPEAT 7; fill out the PCM stream with all '1110' values
6.2.2.2 EXAMPLE #2
Output a simple frame of 16 words defined as follows:
PCM SETUP
Sync Pattern = FAF3 3400
Bits per Word = 16;
Words per Frame = 16; for 256 bits / frame
MSB / LSB first = MSB; desired direction
EDIT PCM
1 – PC01 = LOAD FSP;
2 – PC02 = LOAD FSP;
3 – LOAD IMM, 0000; General pattern will be all zeroes
4 – REPEAT 7; 8 total words of zero
5 – LOAD IMM, 1248; Unique value 1248 in word # 11
6 – LOAD IMM, 0000
7 – REPEAT 4; 5 words (12 through 16) containing 0000
6.2.2.3 EXAMPLE #3
Generate a PCM frame of 4096 words and include the Frame Counter.
PCM SETUP
Sync Pattern = FAF3 3400; using 32 bit Sync Pattern
rd
210 South 3
Street, North Wales, PA 19454
Tel: 215.699.2060 Fax: 215.699.2061
PV01 – 0xFAF3
PV02 – 0x3400
24
09.21.2017
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POGEE
ABS
NC
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