GatesAir PT-353, Инструкция по установке и эксплуатации, Страница: 28 / 55

PT/PR-353 Program Audio Module Installation & Operation Manual 3 – Installation & Operation
Version 1.1
3-14 GatesAir
Intraplex Products
Table 3-7. PT-353 and PR-353 Indicator Lights
Indicator
Light Function Color Status When lit, it indicates
B
o
th
P
T
-353
an
d
P
R
-353
M
o
d
u
les
SRVC* Service Indicator Green Off Module is disabled.
Blinks Blinks if a configuration error is present.
On Service for the module is ON.
LEVELS Level Indicator 1 Green On Signal strength is -4 dBm (-24 dBFS).
Level Indicator 2 Green On Signal strength is +2 dBm (-18 dBFS).
Level Indicator 3 Green On Signal strength is +8 dBm (-12 dBFS).
Level Indicator 4 Yellow On Signal strength is +14 dBm (-6 dBFS).
Overload
Indicator
Red On Signal strength is ≥ +20 dBm (0 dBFS).
2MB TDM Timing
Detector
Green Off T1 bus (1.544 mHz)
On 2MB bus (2.048 mHz)
FAIL* Fail Indicator Red Off Normal
On Hardware or software failure (An ALARM signal is
sent to the multiplexer common module if this
indicator light is on.)
PT
-353
M
o
du
le
O
n
ly
DIG Audio Source Green Off Analog source detected (or no source detected).
Blinks Input data rate does not match the board rate.
On Digital source detected.
AUX Auxiliary Data
Overflow
Yellow Off Normal position
Flash Erratic flickering – Incoming serial auxiliary data
exceeds available transmission bandwidth.
ERR Bit Error Yellow Off Digital source detected.
Flash Erratic flickering – (for .1 second) Bit errors
detected.
PR
-353
M
o
du
le
O
n
ly
ACT TDM Data
Activity
Green Off Received data is all zeros or all ones.
On Received data is a mix of zeros and ones.
FRAME FEC Frame Green Off Module is out of frame.
On Module is in frame.
ERR Bit Error Yellow Off No errors detected.
Flash Erratic flickering – (for .1 second) Bit errors
detected.
On Three or more consecutive 8-frame blocks have
errors. Audio is muted (faded to zero over a period
of 1-2 ms) until three consecutive error-free 8-
frame blocks are detected.
3.6 Impedance
Terminal impedance can be set on the PT-353 module using Jumper 3 and Jumper 4. Terminal
impedance is used to match impedance between the PT-353 module and the PR-353 module to ensure
that input and output are equivalent. Table 3-8 gives the audio input impedance jumpers for the PT-
353 module.