5

®

AFE1124

TYPICAL PERFORMANCE CURVES

At Output of HDSL Pulse Transformer

The curves shown below are measured at the line output of the HDSL transformer. Typical at 25

°C, AV

CURVE 1. Upper Bound of Power Spectral Density Measured at Output of HDSL Transformer.

1K

–20

–40

–60

–80

–100

–120

10K

100K

POWER SPECTRAL DENSITY LIMIT

Frequency (Hz)

1M

10M

–38dBm/Hz for T1

–40dBm/Hz for E1

196kHz

292kHz

–80dB/decade

T1

–120dBm/Hz

for E1

–118dBm/Hz

for T1

E1

CURVE 3. Input Impedance of rxLINE and rxHYB.

0.4T

B = 1.07

C = 1.00

D = 0.93

0.4T

–0.6T

–1.2T

A = 0.01

E = 0.03

G = –0.16

14T

H = –0.05

50T

F = –0.01

A = 0.01

F = –0.01

0.5T

1.25T

CURVE 2. Transmitted Pulse Template Measured at HDSL Transformer Output.

100

200

150

100

50

0

300

500

INPUT IMPEDANCE vs BIT RATE

Bit Rate (kbps)

700

900

1300

1100

T1 = 784kbps,

32k

Ω

E1 = 1168kbps,

21k

Ω