Agilent Technologies N4962A Guida Utente Scaricare il pdf (Pagina 44)

Operation

Serial BERT 12.5 Gb/s User Guide

4.2.5 Front Panel – Display Selection Controls

Figure 12. N4962A front panel – display selection controls

Table 15. N4962A front panel – display selection controls

Text

Type

Description

Default

Display

Scroll

UP and DOWN

buttons

and 6 lights

Buttons select the measurement or

configuration option to display on the

display panel:

• UP selects the previous display

item;

• DOWN selects the next display

item.

The selection process wraps around the

display options (pressing DOWN at the last

item selects the first item).

The display options are:

• BER

Displays the current measured bit error rate

(BER), defined as the total number of bit

errors divided by the tota

l number of bits

(bit counters detailed in

Table 9).

If the error detector is on (Receiver

->On

light is ON), the BER shown is a

measurement that is b

eing calculated in

real time. If the detector is off, the BER

shown is from the previous session

(captured while the detector was

previously on).

Freq (GHz)

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 87 88

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Agilent Technologies N4962A Guida Utente Pagina 44