46 MDS 4790/9790 Series I/O Guide MDS 05-3438A01, Rev. F
Unit Diagnostic
Service
DTYPE [NODE/ROOT/GATE/PEER]
This command configures a radio’s type for network-wide diagnostics.
For most radio systems, it is sufficient to define a radio as a root or node
radio. The root radio is the radio connected to the host computer for
non-intrusive diagnostics functions. Specify only one root per radio net-
work.
The GATE and PEER settings are used for complex radio networks and are
included to accommodate network-wide diagnostics in simplex and spe-
cial radio network configurations.
Entering DTYPE NODE configures the radio as a node radio. Entering DTYPE
ROOT configures the radio as a root radio. Entering the DTYPE command alone
displays the current setting. The default setting is
NODE.
Refer to Section 7.2, Performing Network-Wide Radio Diagnostics,
beginning on Page 84. Refer to the GE MDS Network-wide Diagnostics
Handbook (P/N 05-3467A01) for a complete explanation of remote
diagnostics.
TX & RX Emphasis EMP [ON/OFF]
Use this command to enable or disable pre-emphasis and de-emphasis
on the analog input and output signals.
Pre-emphasis is a function used in older analog radios where the trans-
mitter’s modulating signal is increased at the higher frequencies to
increase system performance. De-emphasis compensates at the receiver
for a transmitted signal that has had pre-emphasis applied.
ON indicates that pre-emphasis and de-emphasis are enabled, and OFF
indicates that pre-emphasis and de-emphasis are disabled.
Hardware Revision
Level
HREV
This command displays the hardware revision level.
Initialize to Factory
Defaults
INIT
This command resets customer-programmable settings back to factory
defaults:
Emphasis screen, Page 70
A
B
Table 12. Defaults for User-Configurable Parameters
Function Value
Alarm Mask—Major (AMASK) FFFF 0000
Alarm Mask—Minor (NMASK) 0000 FFFF
Alarm Sense—(ASENSE) Active Open (High)
Buffer Mode On
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