GatesAir Intraplex PTR-255 - Status and Diagnostics; LED Indicators; Loopbacks

GatesAir PTR-255 Program Audio Codec Module
Intraplex Products Issue 2.1, February 2006
29
4 Status and Diagnostics
The PTR-255 contains several LED status indicators and also offers local and remote loopback
capability for diagnostic testing.
4.1 LED Indicators
SYNC RX LEVELS TX LEVELSLOCK FAIL
LEFT
RIGHT
LPBK
SRVC
Figure 4-1
LED Indicators
Table 4-1
LED Indicators
LED
Label
Function
Color
When Lit, Indicates:
SYNC
Receive Sync Indicator
Green
The receiver is synchronized and ready to decode
audio.
TX/RX
LEVELS
Level Indicators
3 Green
1 Yellow
1 Red
-24, -18, -12, -6 and 0 dB relative to full scale,
respectively. Accurate to 0.5 dB.
LOCK
Tx Lock Indicator
Green
Transmitter is sending data.
LPBK
Loopback Indicator
Yellow
On when a local loopback is active; blinks when a
remote loopback is active.
SRVC
Service Indicator
Green
Service for the card is ON.
Blinks if a configuration error is present (see
Section 4.3, Configuration Errors, for details).
4.2 Loopbacks
Loopbacks allow the user to insert audio and data into the PTR-255 and bring it back out at the
same location for testing. The PTR-255 provides two loopback options, local and network. Each
of these is useful for testing different parts of the system, as described below. The loopbacks
work on the audio channel(s) only; the auxiliary data channel is not looped back.
Do not turn on either loopback while the card is transmitting “live” audio, as starting a loopback
will disrupt the audio transmission for about one second.