In VT-1.5 mapping mode, The Low Rate options are 1.544M or Fractional DS1 (Nx64 or Nx56) where:
1.544M: Configures the transmitter for full rate testing at 1.544Mbps
Fractional DS1 (Nx64 or Nx56): Configures the transmitter for fractional testing using N or M 64kbps timeslots (contiguous or
non-contiguous timeslots)
In STS-1 mapping mode/Tributary set to DS3, the Low Rate option are 45M or 1.544M Mux (DS3/DS1 Mux) or Fractional DS1
(Nx64 or Nx56) Mux where:
45M: Configures the transmitter for full rate testing at 45Mbps
1.544M Mux mode: Configures the transmitter for full rate testing at 45Mbps signal with DS1 payloads (1 to 28 channels)
Fractional DS1 Mux mode: Configures the transmitter for full rate testing at 45Mbps signal with DS1 payloads (1 to 28 channels)
for fractional testing using N or M 64kbps or 56kbps timeslots (contiguous or non-contiguous timeslots)
In VT-2 mapping mode, the Low Rate options are 2M or Fractional E1 (Nx64) where:
2M: Configures the transmitter for full rate testing at 2.048Mbps
Fractional E1: Configures the transmitter for fractional testing using N or M 64kbps timeslots (contiguous or non-
contiguous timeslots)
In STS-1 mapping mode/Tributary set to E3, the Low Rate options are 34M or 2M Mux (E3/E1 Mux) or Fractional E1 Mux (E3/E1
Mux w/Nx64) where:
34M: Configures the transmitter for full rate testing at 34Mbps
2M Mux mode: Configures the transmitter for full rate testing at 34Mbps signal with E1 payloads (1 to 16 channels)
Fractional E1 Mux mode: Configures the transmitter for full rate testing at 34Mbps signal with E1 payloads (1 to 16
channels) for fractional testing using N or M 64kbps timeslots (contiguous or non-contiguous timeslots)
Framing:
Depends on low rate selected:
In DS1 mode, the options are unframed, D4 (SF) and ANSI T1.107 (ESF).
In DS3 mode, the options are unframed, M13 and C-Parity.
In E1 mode, the options are unframed, PCM31, PCM31C, PCM30, and PCM30C. Framing conforms to G.704 and G.706
recommendations and are briefly described below.
In E3 mode, the options are unframed, framed G.751.
Pattern
Tapping the Tx Pattern box opens the Tx Pattern Setup screen.
Tx Pattern Setup
RXT-3900 e-Manual D07-00-111P Rev A00
Summary of Contents for RXT3900
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