User's Manual

001-2019-500 Rev 0 Paragon4 – UHF, 700 & 800MHz User Manual

• 2x DE-9 RS-232 ports for setup and user data

• 1x rocker switch (positions PF 1 and 2) to select various test modes. See paragraph 5.3.2.

• 2x Ethernet ports – for setup and user data

• 2x Ethernet LEDs (status & activity)

• USB port – reserved.

5.1.4 Power Amplifier

Model using Crescend Technologies power amplifier (Illustrations not drawn to scale). The location and

function of the power amplifier's front panel status indicators are shown in Figure xx and described in the

table below:

Table 3 - Power Amplifier indicators

LED Function

DC ON Lights green when DC power (+13.8 VDC) is applied

LOW OUTPUT Lights red when output power drops to approximately 80-85% of set output power

HIGH VSWR

Lights red when VSWR exceeds approximately 2.5:1. At which point, the amplifier

output is reduced. The higher the load VSWR, the more the output power is reduced.

HIGH TEMP

Lights red when the amplifier exceeds a safe operating temperature

(Operating temperature range = -30 °C to +60 °C)

When the heatsink reaches an unsafe level, the output power of the amplifier is re-

duced by approximately 50%. This keeps the channel on-air while providing some

short-term protection. Address the underlying cooling issue as soon as possible.

Preliminary