HP 37717C, Руководство по калибровке, Страница: 218 / 399

3-109
Performance Tests
STM-1/STM-4 Optical Interface (Options UKT, USN)
STM-1/STM-4 Optical Interface (Options UKT, USN)
N OT E An SDH Option must be fitted for this option to operate - see Appendix B.
Specification (Transmitter)
Specification (Receiver)
Description
The 155.52/622.08 MHz output of the optical transmitter is checked for power level
at 1310 nm (and 1550 nm wavelengths if Option USN). The receiver sensitivity is
verified by attenuating the transmitter output and checking for no errors in back-to-
Wavelength UKT - 1280 nm to 1330 nm,
USN - 1280 nm to 1330 nm or 1520 nm to 1565 nm
Power Output 1310 nm -10 dBm (Nominal).
1550 nm -1dBm (Nominal)
Line Coding NRZ
Safety Class Class 3A, FDA 21 CFR Ch.1 1040.10 and EN 60825
Data Rate 155.52 Mb/s or 622.08 Mb/s (Nominal)
Wavelength 1200 nm to 1600 nm
Maximum Input Power -8 dBm (for BER of 1.0E
-10
)
Line Coding NRZ
Sensitivity -34 dBm Minimum (STM-1),
- 28 dBm Minimum (STM-4)
(wavelength=1300nm, Modulation=100%,
Data=2
23
-1, BER=1.0E
-10
)
PMP Input 150mV pk-pk minimum
PMP Impedance Nominal 50
Ω