Agilent Technologies 81134A Uživatelský manuál stáhnout pdf (Strana 7)

Memory Depth

Data Format

8Kbit per channel

RZ / NRZ / R1

Data Generation

Interface

Impedance

Input Levels For Full Modulation Range

Max Input Levels

Delay Modulation Range

Modulation Frequency

dc-coupled

50 Ohm nominal

±500 mV

±2.5 V

±250 ps, ±25 ps, selectable

0 Hz - 200 MHz

Delay Control Input

Operating Temperature

Storage Temperature

Humidity

Warm Up

EMC

Power

Net Weight

Shipping Weight

Dimensions

0°C to +55°C

-40°C to +70°C

95% R.H. (0°C to +40°C)

30 Minutes

Class A

100V to 240V AC nom.; 200 VA

max.; 47 Hz to 63 Hz

14.8 kg (32.6 lbs)

19 kg (41.9 lbs)

145 mm x 426 mm x 553 mm

(5.7 in x 16.75 in x 21.75 in)

General Information

Figure 3:

Pulse Pattern and Data

Functionality

The 81133A and 81134A can gener-

ate an 8 KBit digital pattern in NRZ,

RZ and R1 mode. Furthermore, the

81133A and 81134A can provide a

hardware generated pseudo random

binary sequence (PRBS) from 2

5

- 1

to 2

31

- 1.

Jitter Emulation (Delay Control Input)

Full control over the signal quality

of pulse and data signals provides

the Delay Control Input. With an

external modulation source (e.g.

Agilent 33250A) the amount and

shape of signal jitter can be varied

for stress tests or to emulate real

world signals.

The external source for jitter modu-

lation is applied to this input. Jitter

modulation can be turned on and

off individually for each channel.

Either one of two fixed sensitivities

can be selected ± 25ps or ± 250ps

resulting in a total of 50ps or

500ps.

The amplitude of the modulated

jitter is set by the voltage level of

the signal applied to the Delay

Control Input.

The Variable Crossover Point fea-

ture provides additional control

over the signal quality.

7

-300

-200

-100

0

100

200

300

-500 -400 -300 -200 -100 0 100 200 300 400 500

Voltage at Delay Control In / mV

Modulated Delay (Jitter) / p

s

Figure 2: Modulated Delay (Jitter) vs Voltage Level at Delay-Control-

Input for ±250ps and ±25ps settings

PRBS

2

5

-1

2

6

-1

2

7

-1

2

8

-1

2

9

-1

2

10

-1

2

11

-1

2

12

-1

2

13

-1

2

14

-1

2

15

-1

2

23

-1

2

31

-1

Polynomial

X

5

+ X

4

+ X

2

+ X

1

+ 1

X

6

+ X

5

+ X

3

+ X

2

+ 1

X

7

+ X

6

+ 1

X

8

+ X

7

+ X

3

+ X

2

+ 1

X

9

+ X

5

+ 1

X

10

+ X

7

+ 1

X

11

+ X

19

+ 1

X

12

+ X

9

+ X

8

+ X

5

+ 1

X

13

+ X

12

+ X

10

+ X

9

+ 1

X

14

+ X

13

+ X

10

+ X

9

+ 1

X

15

+ X

14

+ 1

X

23

+ X

18

+ 1

X

31

+ X

28

+ 1

Comment

ITU-T V.29

CCITT 0.153 / ITU-T V.52

CCITT 0.152 / ITU-T 0.152

CCITT 0.151 / ITU-T 0.151

CCITT 0.151 / ITU-T 0.151

PRBS 2

n

-1 , n = 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 23, 31

1 2 3 4 5 6 7 8 9

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