Agilent Technologies N4962A Guia do Utilizador descarregar pdf (Página 45)

Operation

Serial BERT 12.5 Gb/s User Guide 45

Text

Type

Description

Default

•

ε time (sec)

Displays the elapsed time of the BER

measurement, in seconds. If the error

detector is on, the el

apsed time will

increment in real time. If the error detector

is off, the elapsed time shown is from the

previous session.

• Ampl (V)

Displays the single

-ended PRBS output

amplitude, in volts. This voltage is per side,

multiply by 2 when the output is used

ifferentially.

• Freq (GHz)

Displays the internal clock frequency, in

GHz.

When using an external clock (Synth

= 0), then the Freq adjust range is

increased to 500 MHz min, 12.5 GHz max.

The N4962A Frequency setting should be

set to the frequency of the ext

ernal clock

so that the N4962A frequency dependent

parameters are correctly set.

• Ø

Displays the error detector electronic clock

phase shift setting, in degrees. The phase

ift amount ranges from 0 to +358

degrees (one unit interval).

When Ø is shown on t

he display, pressing

the Adjust

->Config State PLUS button will

prompt the N4962A to automatically

determine the optimum detector clock

phase. This is detailed in Section

4.6.

• Config State

Displays one of

ten configuration states

that can be modified with the Adjust

>Config State PLUS or MINUS buttons.

Different state can be selected with the

Scroll UP or DOWN buttons, but the light

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 87 88

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Agilent Technologies N4962A Guia do Utilizador Página 45

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