ZyXEL U-1496S Plus User Guide - Page 102

FRN Fast Rate re-Negotitation Granted FG

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This reading is expressed in 0.1 dBm resolution. The modem measured receiving signal power is generally within 1-2 dBm of the actual value and with relative accuracy. The receiver sensitivity specification for the U-1496 is -43 dBm. Strong signal power could cause signal saturation in the channel and degrade the data validity. To avoid this situation, decrease the transmitting power of the remote modem. For increased line operability, the U-1496's transmitting power level on a leased line operation could be adjusted from 0 dBm to -27 dBm. The default value is -9 dBm. Phase Jitter (PJ) This reading is expressed in peak-to-peak degrees for phase jitter in the 20 to 300 Hz frequency range in 0.1 degree resolution. Frequency Offset (FO) Frequency Offset is expressed in 0.1 Hz resolution. It is the difference between the transmitted carrier frequency and the received carrier frequency. In ON-LINE SCREEN 3 there are four counters for recording the action or reaction the modem takes when a line condition is changed. ((MODE-29)) Retrain Granted (RG) The count of remote modem's retrain request. Each request is a bad receiving indication. Retrain Requested (RT) The count of U-1496's request for remote modem to retrain when signal quality is poor. Round Trip Echo Delay (ED) Measured in T (1/2400 sec.). Will be re-measured in every retrain action. Carrier Loss Counter (CL) When operated over a leased line, it is the count of the carrier's temporary drop-out, if there is any. ON-LINE SCREEN 4 also has four counters recording the down modem's actions and reactions. ((draw new)) FRN (Fast Rate re-Negotitation) Granted (FG) The count of the remote modem's change rate (FRN) requests. Each request is an indicator of a changed receiving condition. FRN Request (FR) The count of U-1496's requests to change rate. Block Retransmitted (BR)

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This reading is expressed in 0.1 dBm resolution. The modem measured receiving signal power is
generally within 1-2 dBm of the actual value and with relative accuracy. The receiver sensitivity
specification for the U-1496 is -43 dBm. Strong signal power could cause signal saturation in the
channel and degrade the data validity. To avoid this situation, decrease the transmitting power of
the remote modem. For increased line operability, the U-1496's transmitting power level on a
leased line operation could be adjusted from 0 dBm to -27 dBm. The default value is -9 dBm.
Phase Jitter (PJ)
This reading is expressed in peak-to-peak degrees for phase jitter in the 20 to 300 Hz frequency
range in 0.1 degree resolution.
Frequency Offset (FO)
Frequency Offset is expressed in 0.1 Hz resolution. It is the difference between the transmitted
carrier frequency and the received carrier frequency.
In ON-LINE SCREEN 3 there are four counters for recording the action or reaction the modem
takes when a line condition is changed.
((MODE-29))
Retrain Granted (RG)
The count of remote modem's retrain request. Each request is a bad receiving indication.
Retrain Requested (RT)
The count of U-1496's request for remote modem to retrain when signal quality is poor.
Round Trip Echo Delay (ED)
Measured in T (1/2400 sec.). Will be re-measured in every retrain action.
Carrier Loss Counter (CL)
When operated over a leased line, it is the count of the carrier's temporary drop-out, if there is
any.
ON-LINE SCREEN 4 also has four counters recording the down modem's actions and reactions.
((draw new))
FRN (Fast Rate re-Negotitation) Granted (FG)
The count of the remote modem's change rate (FRN) requests. Each request is an indicator of a
changed receiving condition.
FRN Request (FR)
The count of U-1496's requests to change rate.
Block Retransmitted (BR)