XRT75VL00_08 Datasheet, PDF (31/50 Pages) Exar Corporation – E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR

REV. 1.0.6
XRT75VL00
E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
recommendation is being used. Figure 17 shows the configuration to test the interference margin for DS3/
STS1. Figure 18 shows the set up for E3.
FIGURE 17. INTERFERENCE MARGIN TEST SET UP FOR DS3/STS-1
SINE WAVE
N
GENERATOR
DS3 = 22.368 MHz
STS-1 = 25.92 MHz
ATTENUATOR
Cable Simulator
DUT
XRT75VL00
Test Equipment
PATTERN
S
GENERATOR
2²³ - 1 PRBS
FIGURE 18. INTERFERENCE MARGIN TEST SET UP FOR E3.
NOISE
N
GENERATOR
ATTENUATOR 1 ATTENUATOR 2
Pattern
S
Generator
Cable Simulator
DUT
XRT75VL00
Test Equipment
29