Dorrough 40-A Specifications download pdf (Page 33)

Instruments & Display Tools

Bargraphs

The standard Bargraphs can be used to view numerous different

representations of the incoming audio e.g. level according to the selected scale,

various loudness parameters, sum/difference and more.

PAM PICO TOUCH allows up to 16 simultaneous Bargraphs to be viewed at the

same time.

Eye Width

Range: 10% - 100%

All SDI capable PAM PICO TOUCH feature the Eye Width Parameter as default

feature.

Inspired by cell phone reception indication, Eye Width expresses the immediate quality of the incoming SDI

signal and allows you to constantly monitor this to avoid any drop outs and instabilities.

The background for the Eye width feature has its starting point in the data eye diagram, typically used to depict

deviation in amplitude and timing of the incoming data stream. By folding the parts of the waveform

corresponding to each individual bit into a single graph, the eye pattern represents an average statistic of the

incoming data and the eye opening expresses the signal quality in terms of amplitude (level difference and

timing difference (jitter).

Eye Width, as the

name suggests, is

concerned with the

width of the eye

pattern, focusing

primarily on the

timing differences

which can also be

measured as jitter.

While not being an

actual jitter

measurement, Eye

Width expresses the

eye pattern max.

timing window as a

percentage of the

ideal, where 100%

width is the theoretical optimal signal with no quality loss (90% is likely to be the max. in real life), and 10%

width the worst case scenario where most products will be unable to the lock onto the signal.

AES Lock Indication

The AES enabled PAM PICO TOUCH feature an AES lock indicator, allowing you to instantly confirm that the

meter is locked onto the incoming signal. When clocking to an incoming AES signal, AES1 needs to be fed the

master clock. Given that a valid clock and lock is achieved, AES1 will light up green.

The corresponding AES inputs will be green when valid data is received in sync with the incoming clock on AES1.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 42 43

No comments

Dorrough 40-A Specifications Page 33