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Commands > Commands 0000...0999

## 0139
Filter coefficient

Input impedance and balance impedance in the analogue interface (ELU-A) are defined by a number of filter coefficients that are loaded in DSLAC. The filter coefficients are stored in the form of a table.

Table No is chosen for extension line to any of the values below.

The impedance is chosen as Rs(ohm) + Rp(ohm)//Cp(nf).

##### Valid data

Value | Input impedance | Balance impedance
Sweden
01 | 200 + 1000//100 | 0 + 900//30
Finland short
02 | 270 + 910//120 | 390 + 620//100
Finland lnog
03 | 270 + 910//120 | 270 + 1200//120
Italy
04 | 180 + 630//60 | 750//18
Spain, Australia
05 | 220 + 820//120 | 220 + 820//120
Standard
06 (default) | 600 | 600
Austria, Czech. Rep.
07 | 250 + 833//133 | 600
Denmark
08 | 300 + 1000//220 | 400 + 500//330
Norway
09 | 120 + 820//110 | 120 + 820//110
Netherlands
10 | 600 | 340 + 422//100
Belgium short
11 | 150 + 830//72 | 150 + 830//72
Belgium long
12 | 150 + 830//72 | 600
England, New Zealand
13 | 300 + 1000//220 | 370 + 620//310
Brazil
14 | 900 | 0 + 800//50
Philippines
15 | 900 | 900
China
16 | 200 + 560//100 | 200 + 560//100
17-39 Reserved for future use.
40 | 220 + 820//120 | automatic
41 | 600 | automatic
42-97 Reserved for future use.
98-99 Reserved for test.

Minimum required authority level from telephone: No

Accessible via BMS: Yes

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