HP 6000 Router manual Port Enhanced Serial, FIC 3C13863, FIC 3C13864

62CHAPTER 7: FLEXIBLE INTERFACE CARDS

Connect Interface

Optical Fiber

When connecting optical fiber, please note:

■ Do not bend optical fiber with excessive stress. The bend radius should be no less than 10 cm.

■Ensure that the Tx terminal and the Rx terminal of the interface are connected correctly.

■Keep the sectional surface of optical fiber clean and free from dust.

Laser Danger! Do not observe the optical fiber connector connected with the laser in case the invisible laser radiation harms your eyes.

1Find the Rx optical port and Tx optical ports on 100 FX MM/100 FX SM. Insert one end of an optical fiber into the Rx optical port of 100 FX MM/100 FX SM, and the other end into the Tx optical port of the peer device; insert one end of another optical fiber into the Tx optical port of 100 FX MM/100 FX SM, and the other end into the Rx optical port of the peer device.

2Power on the Router and check the status of the LINK LED on the 100BASE-MM/100BASE-F SM panel. ON means the Rx link has been connected and OFF means the Rx link is not connected. In the latter case, check the line.

4-port Enhanced Serial	4-port / 8-port FIC stands for 4-/8-port enhanced high-speed sync/async serial
FIC (3C13863)	interface card. The cards function mainly to transmit, receive, and process the data
8-port Enhanced Serial	on the synchronous/asynchronous serial interface. They support both synchronous
FIC (3C13864)	and asynchronous modes. In the former case, they support the DTE/DCE mode.
Introduction to DTE and	A card is usually connected to an external modem for the dialing purpose. In this
DCE	case, an appropriate baud rate must be set.
	The synchronous serial interface can work in either DTE or DCE mode. Two devices
	directly connected should work as DTE and DCE. The DCE device provides the
	synchronization clock and specifies communication rate, and the DTE device
	accepts the synchronization clock and communicates at the specified rate.
	The Router normally works as a DTE. To know whether the specific equipment
	connected with the Router is DTE or DCE, please refer to the manual shipped with
	the equipment.
Speed and transmission	In different operating modes, the synchronous/asynchronous serial interface
distance of	supports different electric signal specifications and baud rates. In addition, the
synchronous/asynchron	maximum signal transmission distance not only depends on the specified baud
ous serial interface	rate but also the selected cable. The following table shows how the cable type,
	baud rate, and the maximum signal transmission distance related to each other.
	Table 5 Speed and transmission distance of V.24 (RS232)/V.35/X.21 cable
	V.24 (RS232)	V.35/X.21
	Baud rate (bps)	Max.	Baud rate (bps)	Max. transmission
		transmission		distance (m)
		distance (m)
	2400	60	2400	1250