DS3151/DS3152/DS3153/DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs

39 of 60

Figure 13-2. Receiver Framer Interface Timing Diagram

Table 13-D. Receiver Input Characteristics—DS3 and STS-1 Modes

PARAMETER

MIN

TYP

MAX

UNITS

Receive Sensitivity (Length of Cable)

900

1200

ft

Signal-to-Noise Ratio, Interfering Signal Test (Notes 13, 14)

10

Input Pulse Amplitude, RMON = 0 (Notes 14, 15)

1000

mVpk

Input Pulse Amplitude, RMON = 1 (Note 14, 15)

200

mVpk

Analog LOS Declare, RMON = 0 (Note 16)

-24

dB

Analog LOS Clear, RMON = 0 (Note 16)

-17

dB

Analog LOS Declare, RMON = 1 (Note 16)

-38

dB

Analog LOS Clear, RMON = 1 (Note 16)

-29

dB

Intrinsic Jitter Generation (Note 14)

0.03

Table 13-E. Receiver Input Characteristics—E3 Mode

PARAMETER

MIN

TYP

MAX

UNITS

Receive Sensitivity (Length of Cable)

900

1200

ft

Signal-to-Noise Ratio, Interfering Signal Test (Notes 13, 14)

12

Input Pulse Amplitude, RMON = 0 (Notes 14, 15)

1300

mVpk

Input Pulse Amplitude, RMON = 1 (Notes 14, 15)

260

mVpk

Analog LOS Declare, RMON = 0 (Note 16)

-24

dB

Analog LOS Clear, RMON = 0 (Note 16)

-17

dB

Analog LOS Declare, RMON = 1 (Note 16)

-38

dB

Analog LOS Clear, RMON = 1 (Note 16)

-29

dB

Intrinsic Jitter Generation (Note 14)

0.03

Note 13: An interfering signal (2

is added to the wanted signal. The combined signal is passed through 0 to 900ft of coaxial cable and presented to the DS3154

receiver. This spec indicates the lowest signal-to-noise ratio that results in a bit error ratio <10

Note 14: Not tested during production test.

Note 15: Measured on the line side (i.e., the BNC connector side) of the 1:2 receive transformer (Figure 1-1). During measurement, incoming

data traffic is unframed 2

Note 16: With respect to nominal 800mVpk signal for DS3/STS-1 and nominal 1000mVpk signal for E3.

RCLK (NORMAL)

RPOS/RDAT,

RNEG/RLCV

t6

t1

t2

t3

RCLK (INVERTED)

t7