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AES/EBU WIRE.

An AES/EBU wire input is interfaced to the PNP 1000 at remote interface connector J2.  Connect the AES/EBU
signal to J2–7 and J2–8.  The AES/EBU signal is polarity independent.  Therefore, the signal cables can be con-
nected to J2–7 and J2–8 in any combination.  Refer to Figure 3.

AES/EBU OPTICAL.

An AES/EBU optical input is interfaced to the PNP 1000 at DIGITAL IN OPTICAL connector U1.  Connect the
AES/EBU signal to DIGITAL IN OPTICAL connector U1.  Refere to Figure 3.

S/PDIF.

An S/PDIF input is interfaced to the PNP 1000 at DIGITAL IN S/PDIF connector J2.  A BNC–to–RCA phono
adapter is provided in the accessory kit.  Install the adapter and connect the S/PDIF cable to DIGITAL IN S/PDIF
connector J2. Refer to Figure 3.

COMPOSITE.

CONNECTIONS –

A composite input is interfaced to the PNP 1000 at COMPOSITE IN connector J4.  Connect the composite sig-
nal to COMPOSITE IN connector J4.  Refer to Figure 3.

IMPEDANCE PROGRAMMING –

The composite input can be programmed for a 50 Ohm or 10 k Ohm impedance.  The unit is shipped from the
factory configured for a 50 Ohm input impedance.  Program header J6 as desired.   Program header J6 to position
1–2 for 50 Ohms and positions 2–3 for 10k Ohms.  Refere to Figure 7.

AUTOMATIC SWITCHING BETWEEN COMPOSITE AND ANALOG LEFT/RIGHT CHANNEL
PROGRAMMING –

The PNP 1000 is designed to automatically detect and select the composite input when a pilot is present.  If no
pilot is detected, the analog left/right channel input will be selected.  However, the unit can be programmed to
select: 1) only the composite input (J5 on positions 2–3) or 2) only the analog left/right channel input (J5 on re-
moved) or 3) autodetect (J5 on positions 1–2). The unit is  shipped from the factory for automatic switching be-
tween the composite input and the analog left/right channel input.  If the unit is to be configured for composite
only or left/right channel only operation, program header J5 as desired. Refer to Figure 7.

SCA.

The transmitter is equipped with a built–in 67 kHz SCA encoder.  The encoder is controlled by SW2 on the control-
ler interface board and J23 on the DSP board.

CONNECTIONS –

SCA audio is interfaced to the PNP 1000 at connector J2.  Connect: 1) SCA + to J2–12, 2) SCA – to J2–13, and
3) SCA shield to J2–14.

IMPEDANCE PROGRAMMING –

The SCA audio impedance is controlled by header J23 on the DSP circuit board.  The unit can be programmed
for a 600 Ohm (J23 installed) or 10 k Ohm audio impedance (J23 removed).  The unit is shipped from the factory
configured for a 600 Ohm audio impedance.  Program the unit for the desired audio impedance. Refer to Figure
6.

ON/OFF CONTROL –

SCA ON/OFF operation is controlled by SW2 position 6 on the controller interface board.  The unit is shipped
from the factory with the SCA operation disabled.  Set SW2 position 6 to OFF to enable SCA operation or ON to
disable the SCA operation.

Summary of Contents for PNP 1000

Page 1: ...PLUG N PLAY 1000 1000 WATT DIGITAL FM TRANSMITTER April 2002 IM No 597 9972 ...

Page 2: ...nput POWER SUPPLY INDICATORS The DSP circuit board is equipped several power supply status indicators Indicator D15 illuminates when the 10V dc supply is operational Indicator D5 illuminates when the 1 8V dc supply is operational Indicator D7 illuminates when the 2 5V dc supply is operational Indicator D4 illuminates when the 3 3V dc supply is operational Indicator D11 illuminates when the 5V dc s...

Page 3: ...lt indicator illuminates when the AC voltage is outside the operating range required for the pow er supply This range is 95 132 or 190 264 depending on the AC input configuration POWER SUPPLY FAULT INDICATOR The power supply fault indicator will illluminate when the power supply registers a fault condition The power supply fault conditions are as follows 1 48V is out of regulation 8V or 1V 2 12V s...

Page 4: ...nalog left channel and right channel 2 AES EBU wire 3 AES EBU optical 4 S PDIF and 5 composite The following text along with Figure 3 presents the procedure to connect and program the unit for the desired audio input ANALOG INPUT CONNECTIONS Analog left and right channel audio is interfaced to the PNP 1000 at connector J2 Connect the analog left and right channel audio to J2 as follows AUDIO SIGNA...

Page 5: ...ed to automatically detect and select the composite input when a pilot is present If no pilot is detected the analog left right channel input will be selected However the unit can be programmed to select 1 only the composite input J5 on positions 2 3 or 2 only the analog left right channel input J5 on re moved or 3 autodetect J5 on positions 1 2 The unit is shipped from the factory for automatic s...

Page 6: ...n The command can be activated using positive or negative control Positive control requires 1 the use of a momentary or sustained contact to a 5 volt to 12 volt dc signal to disable transmitter operation Negative control requires 1 the use of a momentary or sustained contact to ground to disable transmitter opera tion The positive or negative control is established with the R C IN Common pin locat...

Page 7: ...nto 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 output 2 volts dc when the transmitter output is 1000 watts Circuit ground is recommended for remote metering connections REFLECTED ...

Page 8: ... channel input ground is located at J2 3 The input impedance can be configured for 600 Ohms or 10 k Ohms The input level can be configured for 10 dBm 0 dBm 4 dBm or 8 dBm ANALOG LEFT CHANNEL INPUT The analog left channel input is located at J2 9 The analog left channel input is located at J2 10 The ana log left channel input ground is located at J2 11 The input impedance can be configured for 600 ...

Page 9: ...djust the RF output proceed as follows Refer to Figure 2 1 Operate the front panel menu to read forward power by pushing the menu up or menu down buttons 2 Turn the transmitter on by pressing the TX ON button 3 Use the raise and lower buttons on the front panel to adjust to desired power level AUDIO INPUT LEVEL ADJUSTMENTS AUDIO INPUT LEVEL ADJUSTMENT The transmitter audio input level must be prop...

Page 10: ... 100 However the audio input will be adjusted to a level ensuring audio input overload and clipping will not occur COMPOSITE The composite input level is adjusted at the factory for 100 modulation with a 3 5 volt peak to peak input level The input level is adjusted by composite input level control R11 on the rear panel circuit board If re adjustment of the input level is required proceed as follow...

Page 11: ...nd clipping Ensure the level does not exceed 3 5 volts peak to peak SCA The SCA input audio level is adjusted by using the output level control on the audio source To adjust the level to obtain the desired modulation proceed as follows 1 Connect an SCA decoder to the modulation monitor 2 Operate the front panel breaker to ON 3 Depress the front panel ON switch indicator to illuminate the switch in...

Page 12: ...47 PNP 1000 SCHEMATICS ...

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