Data Sheet #: TM054

Page 21 of 36 Rev: 02

Date: 11/07/08

Performance Specifications continued

Wander Transfer – Wander transfer is the degree to which input wander is attenuated (or amplified) from input to output of a clock.

The GR-1244 requirements for wander transfer limits are shown below.

Integration time,

Stratum 3E TDEV (nanoseconds)

N/A

0.05

≤

N/A

0.1

≤

3.16 x

1.44

≤

1.86 x

τ

10

≤

1.86 x

τ

300

≤

32.2 x

1000 <

τ

N/A

Jitter Attenuation vs. Input Frequency

-80.0

-70.0

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

0.001

0.01

0.1

1

INPUT Jitter frequency (Hz)

0.1

1

10

100

1000

10000

0.01

0.1

1

10

100

1000

10000

Integration Time (sec)

GR-1244-CORE, Fig5-6, Wander Transfer

3E Wander Transfer TDEV

The SM3E, when configured for the appropriate Stratum 3E bandwidth frequency, meets the Stratum 3E requirements,

Jitter Generation – Jitter generation is the process whereby jitter appears at the output of a clock in the absence of input jitter.

The device jitter generation performance is as shown below:

Jitter

19.44 MHz

77.76 MHz

Broadband

8 ps Typical

8 ps Typical

(10 Hz - 2 MHz)

SONET Band

(12 kHz -2MHz)

(12 kHz -20MHz)

1.5 ps Typical

0.8 ps Typical

Jitter Transfer – Jitter transfer is the degree to which input jitter is attenuated (or amplified) from input to output of a clock. It is

a function of the selected bandwidth. The SM3E jitter transfer characteristics are shown below: