Konica Minolta FK-101, Service Manual

Page: 45 / 225

3-5
V34 contlrol CH speed
•
A bit speed of the control channel
•
Default is 1200 (The bit speed of many modems is 1200.)
•
The negotiation of 2400/1200 is performed in the V.34 start-up procedure.
•
Normally you do not need to change the setting.
V34 SYMB select criterion(S/N and Distortion)
•
S/N is measured by sending and receiving line conditioning signal (L1/L2) in the Phase 2. Its
result determines the SYMB speed (modulation speed).
•
-6 to +6 [dB]
•
S/N...........It becomes easy to select a high SYMB by using “- direction”.
•
Distortion..It becomes easy to select a high SYMB by using “+ direction”.
•
After S/N and distortion are measured, optimum SYMBOL rate is determined.
•
Parameter peculiar to Matsushita modems
V34 main CH speed
•
The bit speeds of V.34 are determined by the Phase 3 (training).
•
This functional parameter sets thresholds for the bit speed determination.
•
-8 to +7 (dB)
•
It becomes easy to select a high speed by using “- direction”.
•
Parameter peculiar to Matsushita modems
PIX TxATT, TONE/protocol TxATT, CED/ANSam TxATT and DTMF TxATT
•
Outout level setting
•
-10 to -15 [dBm] (DTMF is between -6 and -11 [dBm])
•
Directly sets modem. There are no external attenuator.
CD/SED ON level
•
Reception signal sensitivity level -33 to -48 [dBm] in steps of 5dBm
•
SED is not used.
•
Default is -48dBm.