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Appendix A
Specifications
MSAM specifications
T-BERD/MTS/SC Getting Started Guide
March 2018
22046537, Rev. 016
Page 215
lists the input sensitivity specifications for the E1 receivers.
Transmitters
The E1 transmitters operate as per ITU-G.703 (11/01).
describes the trans-
mitter specifications.
Level
Measurement (Unbal-
anced)
Level Vp
Range: +5 V to 0.03 V
Accuracy: ±0.02 V ± 10%
Resolution: 0.01 V
Level dBnom
2
:
Range: 7.3 dBnom to -37 dBnom
Resolution: 0.1 dB
1. The designation in dBnom is relative to nominal signal 3 Vp.
2. The designation in dBnom is relative to nominal signal 2.37 Vp.
Table 122
E1 receiver sensitivity specifications
Termination
Type
Impedance
Input Range
Bridge (HI-Z)
>1200
Ω
+6 to -35 dBnom due to cable loss
Terminate
120
Ω
balanced
75
Ω
unbalanced
+6 to -35 dBnom due to cable loss
PMP
120
Ω
balanced
75
Ω
unbalanced
-20 dBnom due to resistive loss in addi-
tion to 0 to -6 dB due to cable loss
Table 121
E1 receiver specifications (Continued)
Parameter
Specification
Table 123
E1 transmitter specifications
Parameter
Specification
Output
One balanced RJ-48 jack
Impedance 120 W
One unbalanced BNC connector/ 75 W
Line code
HDB3 or AMI
Bit rate
Nominal: 2.048 Mbps
Accuracy: ±1.5 ppm, ±1 ppm per year aging
Frequency offset: ±100 ppm in 1 ppm steps
Clock Source
(Timing)
– Internal reference clock with accuracy ±1.5 ppm,
±1 ppm per year aging
– Recovered from Rx1
– External from BITS, SETS, or CLOCK
Frequency
offset
±100 ppm in 1 ppm steps