Tektronix NetTek YBT1E1, Руководство пользователя

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Appendix A: Specifications
A- 2
NetTek YBT1E1 T1 & E1 Circuit Tester User Manual
Table A- 1: Electrical characteristics (Cont.)
Characteristic Description
Receiver (Rx) Characteristics
Input Impedance, nominal T1 and E1 : Bridge mode:
>
1000
Ω
Monitor, Loopback, and Terminate mode:
110
Ω
10%
Sensitivity T1 and E1 : Terminate mode: 0 to --12 dBdsx
1, 4
Bridge mode: 0 to --12 dBdsx
2, 4
Monitor mode: --20 to --30 dBdsx
3, 4
Level Measurements T1 and E1 : dBdsx
5
and V
p-p
Jitter Tolerance, nominal T1 : 400 to 100,000 Hz: complies with ITU, AT&T, and
Telcordia requirements for T1 applications (PUB
62411, TRNWT 000499 Cat II, CCITT G.823,
ITU-TI.431)
E1 : 400 to 100,000 Hz: complies with
ITU--T I.431 for CEPT applications (CCITT G.823,
ITU--T I.431)
Jitter Transfer Curve, nominal
6
T1 : Attenuator meets the requirements of
PUB 62411, PUB 43802, TR-TSY 009, TR-TSY 253,
TR-TSY 499, and ITU-T1.431 and G.703
E1 : Attenuator meets the requirements of
ITU--T I.431 and G.736
1
110
Ω
input impedance. Employs long-haul equalizer.
2
>1 k
Ω
input impedance. Employs long-haul equalizer.
3
110
Ω
input impedance. Employs long-haul equalizer and 20 db amplification.
4
Rx Status Indicator (T1 pulses) reports Weak Signal when lower amplitude signals are
detected.
5
3 dB
6
NetTek Y350 or NetTek Y400 reference clock.