345
HIGH: Nominal 1.2 Vpk conforms to ITU G.703&ANSI T.102
DSX: Nominal 0.6 Vpk con forms to ITU G.703&ANSI T.102
External Clock Input: 75 Ohms, BNC connector
Frequency Range:
Input: 44.736 +/-500 ppm
Output: 44.736+/- 5 ppm standard
T3 GENERAL:
DS3 LED Indicators:
Alarm Indicator: Red LED (Alarm AIS(Blue, in 3 different
formats),Idle, Remote Alarm(FEA or X- bit))
Status Indicators :
Signal – Green LED ON when signal present and LED OFF when
signal lost.
Frame Sync – Green LED ON when DS3 frame is synchronized and
LED OFF when DS3 is Out Of Frame,
Pattern Sync – Green LED ON when Bert pattern is synchronized and
LED OFF when sync is lost( No pattern sync)
Loss of Power Status: Low Battery Voltage Flashes on the screen
when 5 minutes or about of charge remains.
BERT:
Patterns: 2
n
-1, n =7,9,10,15,20,21,23, QRSS , All 0’s, All 1’s, 1:3, 1:7,
1:15,1:31,
Measurements: Logic Errors, Rate, ERS
Frame Errors, Rate, ERS
Bipolar Violations, Rate, ERS
P-Bit Parity Errors,
CP Parity Errors, Rate, ERS
Far End Block Errors(FEBE), Rate, ERS
G.821 errors and %: EFS, ERS, SES, AVS, UAVS
Error Injection
Logic: Rate Continuous, Single
Bipolar Violations Rate Continuous, Single
Frame Rate Continuous, Single
P- Parity Rate Continuous, Single
C- bit Rate Continuous, Single
FEBE Rate Continuous, Single
Send Alarms: AIS (in three different formats), Remote, Idle, LOS, LOF
LOOPBACKS:
Remote Loop back (allows through mode)
Local Loop back
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