Specifications

Appendix B Parameter List Installation and Operation Manual
B-10 Configure Transmission Parameters ASMi-52CQ Ver. 2.12
Parameter Type Use Value Indication
ASYM PSD Write Defines the amount of
power applied to the
information signal in
order to achieve a
satisfactory level of
signal strength at the
receiving end of the
circuit
Symmetric Supported in both Annex A and
Annex B modes
Asymmetric • Annex A at 768 kbps
• Annex B at 2048 kbps
LINE PROB Write Indicates whether the
modem should
perform a line probing
in order to find the
best possible rate of
transmission
Fixed Disable line probing
Adaptive Enable line probing
ASMi-52CQ modems support
"Adaptive " only.
PORT CLK
SOURCE
Write Sets timing mode of
the current modem
(non-E1 modems
only)
Master Selected modem operated with
the clock set by the Clock
Source field of the Modem
Setup menu (see
Figure B-2 )
External External source derived from
the adjacent DTE port
E1 modems only per
port
Internal
System
External
Clock provided per port
LRS-24
DTE
CONFIGURED
WIRE
Write Indicates whether the
modem is operating
over 2 or 4 wires
2 Permanently set to 2-wire
TRANSMISSION
MODE
Write Selects the
transmission mode
Annex A
Annex B
ATTENUATION
THRESHOLD
Write Sets the acceptable
difference (in dB)
between the power
transmitted from the
ASMi-52CQ modem
and the power
received by the
remote modem.
0 dB to 127 dB Minor alarm is generated (LOOP
ATTN. OVER LINE A), if selected
loop attenuation threshold
value is exceeded
SNR MARGIN
THRESHOLD
Write Sets the signal-to-
noise ratio threshold.
0 dB to 15 dB Minor alarm is generated (SNR
MARGIN OVER LINE A), if the
selected signal-to-noise ratio
threshold is exceeded