User`s guide

HN-2010

LED Status

Three external LEDs are on the front panel to inform you of the status of the repeater.

The following illustration shows the three LEDs.

Refer to the following table for a description of the LEDs.

Name Color Description

PWR Green Continuous DC power is applied

RXD Amber Received Data of base unit

CD Amber Data Carrier Detect of remote unit

An additional LED is installed inside the unit to help you configure the transceivers.

The internal LED indicates whether the transceiver is in Remote configuration, Base

configuration, or Repeater mode. This visual indication is redundant and is included

for convenience. The switch positions are also marked on the circuit board to show

their function.

Power

Power for the repeater is +7.5 to +24 VDC. The current consumption of the repeater

depends on the radio operating mode and the state of battery charge, but is typically

330 mA.

Battery backup is provided to maintain power during outages. Approximate operating

time from this battery is 2 hours. A trickle charge is maintained on the battery

whenever the unit is externally powered. Sealed lead acid cells are used in the

repeater because of their long-term reliability and charge storage characteristics.

However, the batteries will discharge if the unit is not operated for a period of time.

Voltage limiting circuits are in place at the connector to ensure that incoming voltage

does not exceed +25 VDC. One-amp polyfuses are placed in series with the external

power supply and battery to avoid catastrophic current draw in case of an accidental

short. In addition, a low voltage lockout circuit is also included to shut off the unit

when the voltage-supplied drops lower than 5.5 volts at the connector.