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Dct3080 installation manual – Motorola DCT3080 User Manual

Page 55

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DCT3080 Installation Manual

49

Figure 3-5
LED display for in-band diagnostic

MUTE

MUTE

P

IB diagnostic

indicator

Data activity indicator

Carrier lock indicator

(L = locked, U = unlocked)

The In-Band Status fields are:
Field Description

Mode

The values displayed on the OSD are:

ƒ

64 QAM — 64 QAM digital channel

ƒ

256 QAM — 256 QAM digital channel

Carrier
Lock

Indicates whether the in-band receiver is locked to the carrier. If a
digital carrier is not present, it indicates the carrier is not locked:

OSD

LED

Description

YES L

Carrier

locked

NO

U

Carrier not locked

Data

Indicates whether data is being carried on the in-band stream.
The indicators cover all packet processors, regardless of the
stream they are monitoring:

OSD

LED

Description

YES On

In-band data detected within last 5 seconds

NO

Off

In-band data not detected within last 5 seconds

SNR

When carrier lock has been established, displays an estimate of
the carrier signal-to-noise ratio in dB, with an explanation:

ƒ

GOOD — Good value

ƒ

FAIR — Marginal signal level; check the signal

ƒ

POOR — Unusable signal

ƒ

INVALID — Invalid SNR value