Broadcast Electronics PNP 1000, Руководство пользователя, Страница: 7 / 52

23
TRANSMITTER OFF INDICATOR –
The transmitter off indicator presents the transmitter off status. The indicator will go LOW (0 volts dc) when the
transmitter is disabled. The transmitter off indicator is located at J1–7.
EXCITER AMPLIFIER FAULT INDICATOR –
The exciter fault indicator is located at J1–8 and is active low. This fault is active when one of the following
conditions exists. 1) Exciter heatsink temperature is above 77C. 2) Exciter current is above 4.0 amps. 3) Exciter
power falls below 40 watts. 4) Exciter reflected power is above 20 watts when the transmitter total power is
above 200 watts. 5) Exciter reflected power is above 25 watts when the transmitter total power is below 200
watts. The transmitter will shut down if any of the above conditions occur.
PA FAULT INDICATOR –
The PA fault indicator is located at J1–9 and is active low. This fault is active when one of the following condi-
tions exists. 1) PA heatsink temperature around any device is above 93C. 2) The bias voltage is maximized but
desired output power is not achieved. 3) Any PA device current is above 11.5 amps. 4) The total PA current is
above 42 amps. The transmitter will maximize power output just below the thresholds defined if any of the
above conditions occur.
HIGH VSWR FAULT INDICATOR –
The high VSWR fault indicator is located at J1–10 and is active low. This fault is active when the reflected pow-
er back into the PNP 1000 RF output exceeds 40 watts. The transmitter will maximize power output just below
the 40W threshold when high reflected power is detected.
FORWARD POWER METER OUTPUT –
The remote forward power meter output is located at J1–11. The forward power meter will 2 volts dc
when the transmitter output is 1000 watts. Circuit ground is recommended for remote metering connections.
REFLECTED POWER METER OUTPUT –
The remote reflected power meter output is located at J1–12. The reflected power meter will 2 volts dc
when the reflected power is 40 watts. Circuit ground is recommended for remote metering connections.
TOTAL CURRENT METER OUTPUT –
The remote total current meter output is located at J1–13. The total current meter will 2 volts dc when
the total current is 35 amps. Circuit ground is recommended for remote metering connections.
+12V DC –
+12 volts dc is located at J1–14. The supply is used for remote control and indicator connections.
R.C. IN COMMON –
The R.C. in common input is located at J1–15. The remote control common input determines the polarity of re-
mote control operation. For negative control operation, connect a jumper between J1–14 and J1–15. For posi-
tive control operation, connect a jumper between J1–16 and J1–15.
CIRCUIT GROUND –
Circuit ground is located at J1–16. The ground is recommended for remote control, indicator, and metering con-
nections.
NOTE
NOTE
ENSURE A FAILSAFE JUMPER OR CONTROL DEVICE IS
CONNECTED TO FAILSAFE INPUT J1–17. THE UNIT IS
EQUIPPED WITH A PRE–WIRED INTERFACE CONNECTOR TO
PERMIT IMMEDIATE ON–AIR OPERATION.
FAILSAFE INPUT –