2
Modem/DSU Commands
2-201
6800-A2-GB31-20
January 1997
Table 2-4
Signal Profile for 2024A Modem
Receive Level
(-dBm)
Freq. Shift
FM
Hz
Phase Jitter
FM
Deg
Background Noise
FM
dB
0–11
0
<
10
0
<=
18
0
>=
24
12–20
1
<
10
1
>=
11
1
>=
20
21–30
2
>=
10
2
>=
16
2
<=
22
3
>=
10
3
>=
18
3
<=
21
4
>=
10
4
>=
21
4
<=
20
5
>=
10
5
>=
24
5
<=
18
6
>=
10
6
>=
29
6
<=
17
7
>=
10
7
>=
31
7
<=
16
8
>=
10
8
>=
33
8
<=
15
9
>=
10
9
>=
37
9
<=
14
Table 2-5
Signal Profile for 2048A and C Modems
Receive Level
(-dBm)
Freq. Shift
FM
Hz
Phase Jitter
FM
Deg
Background Noise
FM
dB
0–11
0
<
10
0
<=
8
0
>=
40
12–20
1
<
10
1
<=
10
1
>=
33
21–30
2
>=
10
2
<=
12
2
>=
27
3
>=
10
3
<=
15
3
>=
24
4
>=
10
4
<=
18
4
<=
37
5
>=
10
5
<=
21
5
<=
30
6
>=
10
6
<=
25
6
<=
26
7
>=
10
7
>=
12
7
<=
24
8
>=
10
8
>=
15
8
<=
23
9
>=
10
9
>=
17
9
<=
21