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Appendix A
Specifications
MSAM specifications
T-BERD/MTS/SC Getting Started Guide
March 2018
22046537, Rev. 016
Page 207
Transmitter (STS-1 circuits)
lists specifications for the transmitter when running STS-1 applications.
Physical measurements (STS-1 circuits)
lists frequency and level measurement specifications when running STS-1
applications.
E4/STM-1e PIM specifications
Refer to these tables for specifications for the E4/STM-1e PIM:
Table 103
STS-1 transmitter specifications
Parameter
Specification
Connector
One BNC (TX/RX2); used as transmitter only
Bit rate
51.84 Mbps
Line coding
B3ZS
Clock Source
(Timing)
– Internal reference clock with accuracy ±1.5 ppm,
±1 ppm per year aging
– Recovered from STS-1 Rx1
– External from BITS, SETS, or CLOCK
Frequency offset
±50 ppm, in 1 ppm steps
Pulse (high)
Nominal 1.15 Vp. Complies with
ANSI T1.102-1993 and ITU-T
G.703 (11/01)
after passing through 450 feet of RG59B/U
cable.
Pulse (DSX)
Nominal 0.6 Vp. Complies with
ANSI T1.102-1993 and ITU-T
G.703 (11/01)
.
Pulse (low)
Nominal 0.32 Vp
Pulse shape
With output terminated in 75
Ω
resistive load and DSX
selected, the Dual Module Carrier, Transport Module, and
MSAM meets
ITU-T Recommendation G.703 (11/01)
and
ANSI
T1.102-1993
Impedance
Nominal 75
Ω
Table 104
STS-1 frequency and level measurement specifications
Parameter
Specification
Tx and Rx frequency
Range: 51.84 MHz ±50 ppm
Accuracy: ±1.5 ppm, ±1 ppm per year aging
Resolution: 1 Hz or 1 ppm
Level Vp
Range: 1.6 V to 0.01 V
Resolution: 0.01 V
Accuracy: ±0.05 V ±10%