Instrument Safety - SpectraDynamics HPDA-15RMi-S Operating Manual

2.0 Safety and Preparation for Use
Verify that the connector from your DC power supply has the pin configuration mentioned
above. Do not apply AC voltage to the DC power connector. Failure to follow these
directions may cause injury or death to personnel, cause irreparable damage to the
instrument and voids all warranties.
Please note that the power return (pin 4) is NOT connected to the instrument case
ground internally, however both ground connections (pin 4 and pin 6) are available at the
DC power connector and may be connected together at this point. The requirements for
the external DC power supply are +12 to +36 VDC at 2 Amperes. The following
specifications should be used to ensure the optimum performance for your HPDA-15RMi
-S:
DC Supply voltage
Line regulation
Load regulation
Output ripple

2.2 Instrument Safety

The HPDA-15RMi-S is designed to distribute RF signals with a frequency of 1 to 50 MHz .
Input and output levels below +7 dBm will trigger a fault condition which can be monitored
from the front panel as well as through the Ethernet interface. The recommended level for
the RF input signal is +13 dBm +/- 2 dB .
Input signals must be kept below +20 dBm as greater power levels will damage the unit
and void all warranties.
The HPDA-15RMi-S RF outputs are DC isolated from the chassis ground to prevent
ground loops. These outputs are rated to a maximum of +50 V.
Absolute Maximum Ratings
Input RF Power
Reverse RF Power
Voltage at the RF Input
Voltage at the RF Output +50 V Maximum
+12 to +36 VDC, 2 Amps
+/- 0.05% for a 10% line change
+/- 0.05% for a 50% load change
< 5mV peak-to-peak
+20dBm Maximum
+20dBm Maximum
+50 V Maximum
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