Rainbow Electronics DS3170 - Manual (Page 227)

DS3170 DS3/E3 Single-Chip Transceiver
227 of 233
17.4 CLAD Jitter Characteristics
PARAMETER MIN TYP MAX UNITS
Intrinsic Jitter (UI
P-P
) 0.04 UI
P-P
Intrinsic Jitter (UI
RMS
) 0.01 UI
RMS
Peak Jitter Transfer 1.75 dB
17.5 LIU Interface AC Characteristics
17.5.1 Waveform Templates
Table 17-7. DS3 Waveform Template
TIME (IN UNIT INTERVALS) NORMALIZED AMPLITUDE EQUATION
UPPER CURVE
-0.85 £ T £ -0.68 0.03
-0.68 £ T £ +0.36 0.5 {1 + sin[( p / 2)(1 + T / 0.34)]} + 0.03
0.36 £ T £ 1.4 0.08 + 0.407e -1.84(T - 0.36)
LOWER CURVE
-0.85 £ T £ -0.36 -0.03
-0.36 £ T £ +0.36 0.5 {1 + sin[( p / 2)(1 + T / 0.18)]} - 0.03
0.36 £ T £ 1.4 -0.03
Governing Specifications: ANSI T1.102 and Bellcore GR-499 .
Table 17-8. DS3 Waveform Test Parameters and Limits
PARAMETER SPECIFICATION
Rate 44.736Mbps ( ±20ppm)
Line Code B3ZS
Transmission Medium Coaxial cable (AT&T 734A or equivalent)
Test Measurement Point At the end of 0 to 450ft of coaxial cable
Test Termination 75 W (±1%) resistive
Pulse Amplitude Between 0.36V and 0.85V
Pulse Shape
An isolated pulse (preceded by two zeros and
followed by one or more zeros) falls within the
curves listed in
Figure 17-11 .
Unframed All-Ones Power Level
at 22.368MHz
Between -1.8dBm and +5.7dBm
Unframed All-Ones Power Level
at 44.736MHz At least 20dB less than the power measured at
22.368MHz
Pulse Imbalance of Isolated Pulses
Ratio of positive and negative pulses must be
between 0.90 and 1.10.