Clarion M10 Series Manual do Utilizador descarregar pdf (Página 16)

C-SPEC CORPORATION WIRELESS PRODUCTS

ACK has been received, then another transmission is scheduled. If an ACK is

received on any attempt, then the M10 moves to the next available frame

awaiting transmission. On the last transmission attempt, the transmitting

M10 does not ask for the ACK; rather it moves immediately to the next

frame.

Check Address {On/Off} default = Off. RF Address comparison for sending

ACKs and receiving ACKs. Click to toggle. See Supported Network

Configurations later in this document for a further explanation of RF address

checking.

The following retransmission parameters are activated by selecting the Set

button:

Transmission Tries {1,2,3,4,5,6,7,8} default = 8. Retransmission (ReTx)

protocol offers up to 8 total tries (7 retries) for lost frames. Enable each try

(after the first) by changing its dropdown-list selection from "off" to "on" ( in

no-diversity mode), or from "off" to either "same" or "toggle" (in diversity

mode). Note: this also selects the diversity antenna sequence; the first try

option selects either the internal or external antenna, or diversity mode.

FEC {1,2,3,4,5,6,7,8,no FEC} default = 2. Use Forward Error Correction to

overcome channel errors when the probability of a successful frame transfer

is too low to clean up with the retransmission protocol alone. Click the button

next to the attempt on which the FEC should be activated (can not be set to

any Retry that is set to Off), or click No FEC.

Antenna Selection Diversity {Int,Ext,Div} default = Ext. The dropdown

list selections for the first transmission attempt are: Int which uses the

Internal Antenna Only; Ext which uses the External Antenna Only; Div

which turns on the Diversity function meaning that either antenna can be

used depending upon the option selected in the Retry choices. The Retry 1

through Retry 7 drop down choices depend upon the selection chosen for the

first transmission attempt. If Ext or Int is the first transmission attempt

selection, then the Retry choices are only On or Off and once Off is selected

for a Retry, then the following Retry choices are automatically set Off. If Div

is the first transmission attempt selection, then the Retry choices are Off,

Same, or Toggle and once Off is selected for a Retry, then the following Retry

choices are automatically set Off.

AUI Parameters

Send SQE Test {On/Off} default = Off. This is a collision pulse issued after

an UPLOAD for checking the collision cable pair. It is the same SQE test as

is implemented in any Ethernet card. (IEEE 802.3 Standard section

7.2.2.2.4).

Collisions for Busy {On/Off} default = On. When all upload buffers are

full, then no more frames can be accepted from the AUI port. If collisions for

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