ESCON SAN transport specification (LNW73/73C)

ESCON specifications

The following are the ESCON system specifications for the LNW73/73C:

Optical Line Rate: 200 MBd
Optical Line Coding: 8B/10B
Performance: Short-reach.

Operating range

The table below shows the operating range for the ESCON optical SAN interface. The ESCON transceiver supports 62.5 and 50 μm multi-mode fiber media types.

Table 10-99: ESCON optics operating range multi-mode fiber

Fiber Type	Range
62.5 μm MMF	3 km
50 μm MMF	2 km

Transmitter specifications

The ESCON transmitter conforms to the IBM Corporation SA23-0394-03 standard. The table below describes some of the transmit specifications for ESCON transmitter.

Table 10-100: ESCON transmit specifications

Description	ESCON
Transmitter	LED
Signaling speed (range)	200 Mb/s (± 0.04)
Wavelength (range)	1280 to 1380 nm
T_rise/T_fall (max; 20%−80% response time)	1.7 ns
Maximum RMS Spectral Width (σ)	175 nm
Average launch power (max)	−14.0 dBm
Average launch power (min)	−20.5 dBm
Extinction ratio (min)	+8.0 dB

Receiver specifications

The ESCON receiver conforms to the IBM Corporation SA23-0394-03 standard. The table below describes some of the receive specifications for ESCON receiver.

Table 10-101: ESCON receive specifications

Description	ESCON
Signaling speed (range)	200 Mb/s (±0.04)
Average receive power (max)	−14.5 dBm
Receive sensitivity	−29.0 dBm

Link budgets

The worst-case power budget and link penalties for an ESCON channel are shown in the table below.

Table 10-102: ESCON maximum link loss

Parameter	ESCON
Parameter	62.5 μm SMF	50 μm SMF
Link power budget	8.0 dB	8.0 dB
Operating distance	3 km	2 km

Format specification

The LNW73/73C interface complies with the following formatting standards:

The LNW73/73C supports 4 VCGs with a capacity of 48 STS-1s
FICON/ESCON/FC to SONET Mapping, G.7041 and G.707 (Virtual Concatenation), SA22-7202-02, SA23-0394-03, IBM SG24-4662-00, ANSI X3.296-1977
Protection SONETBLSR and UPSR (split routing available with BLSR)

Performance monitoring

Performance monitoring capabilities are supported on the FICON/ESCON/Fibre-channel interfaces. A detailed list of monitored parameters can be found in Performance monitoring.