Rack-Mount RDMS
TM
Telemetry Receiver
11
Quasonix, Inc.
3.2 Thermal
The storage temperature of the RM RDMS™ unit is rated for 0°C to +70°C, while the operating temperature is rated
for 0°C to +50°C. It is recommended that the unit be kept in a temperature controlled environment to minimize the
risk of operating (or storing) outside the ranges specified. In particular, the four liquid crystal displays on the front
panel are extremely sensitive to low temperatures.
The RM RDMS™ features cooling vents on both sides of its aluminum chassis. These vents must be kept entirely
unobstructed in order to allow for maximum airflow through the system. Whenever feasible, it is helpful to leave an
open rack space above and below the RM RDMS™ for additional heat dissipation.
3.3 Electrical
The RM RDMS™ is available in single- or dual- channel configurations, with all pertinent electrical connections
found on the rear panel.
3.3.1
Rear Panel Connections
Rear panel connectors are the same for all receivers; however, in a single-channel configuration all connectors are
not active.
An optional pre-detection diversity combiner is available in the dual-channel receiver configuration. Connectors for
the diversity combiner are present whether the feature is ordered or not. The electrical interface connectors for all
configurations are shown in Figure 6.
Figure 6: Rear Panel
Functional descriptions and electrical characteristics for each connector located on the rear panel are described in
Table 4.
Table 4: Rear Panel Connector Specifications
Connector
Function
Electrical Characteristics
Connector Type
J1
1
I Out, video
50 ohms, DC coupled
J2
1
Q Out, video
50 ohms, DC coupled
J3
1
Clock Out
75 ohms, 3.3V TTL
J4
1
Data Out
75 ohms, 3.3V TTL
J5
1
AGC Out
1k ohms, DC coupled