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Serial Interface Operation
CDM-760 Advanced High-Speed Trunking Modem
Controller-to-Target
Instruction Code and
Qualifier
Parameter Type
Command
Query
Unit Test Mode
TST=
TST?
Unit Alarm Mask
MSK=
MSK?
Arguments for
Description of Arguments
Command or
(Note that all arguments are ASCII numeric codes from 48 to 57)
Query
1 byte, value of 0
Command or Query.
thru 8
Sets or returns Unit Test Mode in the form x, where:
0=Normal Mode (no test)
1=Tx CW
2=Reserved
3=Single Side Band
4=IQ PN Sequence
5=RF Loopback (auto configures Rx to match Tx)
6=IF Loopback
EXAMPLE: <0/TST=5 (RF Loopback)
36 bytes
Command or Query.
Sets or returns unit alarm masks in the form abcdefgxxxxxxxxxhijklmxxxxnopqrsxxxx, where:
Unit Alarm mask conditions, in form abcdefg, where:
a=Rx AGC Alarm***
b=Es/No Alarm***
c=Ethernet Link Alarm
d=LNB
e=Reference alarm
f=AUPC Alarm****
g=Rx decompression mismatch alarm***
z=FCnC Alarm***
xxxxxxxxx (8 spares)
PIIC1 Alarm mask conditions, in form hijklm, where:
h=Rx Buf PLL Alarm***
i=Rx Buf OverFlow Alarm***
j=Rx Buf UnderFlow Alarm***
k=Ext Clk Act Alarm
l=Ext Clk In Range Alarm
m=Input signal loss Alarm
n=Tx Symbol Clock PLL Alarm
o=Tx Frame Lock Alarmxx (2 spares)
PIIC2 Alarm mask conditions, in form nopqrs, where:
p=Rx Buf PLL Alarm***
q=Rx Buf OverFlow Alarm***
r=Rx Buf UnderFlow Alarm***
s=Ext Clk Act Alarm
t=Ext Clk In Range Alarm
u=input signal loss Alarm
v=Tx Symbol Clock PLL Alarm
w=Tx Frame Lock Alarm
xx (2 spares)
8–21
Revision 3
MN-CDM760
Target-to-Controller
(see Description of Arguments)
Response to
Response to
Command
Query
TST=
TST=x
TST?
TST*
TST#
MSK=
MSK=
MSK?
abcdefgzxxxxxx
MSK*
xx
MSK#
hijklmnoxx
pqrstuvwxx
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