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User Manual
Rev. 1.2- 24/01/11
PTX-DDS
8. Technical Specification
Parameters
Conditions
U.M.
PTX30-DDS
GENERALS
Frequency range
MHz
87.5 ÷ 108
Frequency programmability
From software, with 1 kHz steps
Rated output power
W
30
Modulation type
Direct Digital Synthesis
Operational Mode
Mono, Stereo, Multiplex
Ambient working temperature
°C
0 to + 50 (operational -10)
Frequency stability
WT from -10°C to 50°C
ppm
±1
Modulation capability
kHz
150
Pre-emphasis mode
μ
S
0, 50 (CCIR), 75 (FCC)
Spurious & harmonic suppression
dBc
> 80 (85 typical)
Asynchronous AM S/N ratio
Referred to 100% AM, with no de-emphasis
dB
≥ 60
Synchronous AM S/N ratio
Referred to 100% AM, FM deviation 75 kHz by 400Hz sine, without de-emphasis
dB
≥ 50
MONO OPERATION
RMS @ ± 75 kHz peak, HPF 20Hz - LPF 23 kHz, 50
μ
S de-emphasis
dB
> 85 (typical 90)
Qpk @ ± 75 kHz peak, CCIR weighted, 50
μ
S de-emphasis
dB
>84
Qpk @ ± 40 kHz peak, CCIR weighted, 50
μ
S de-emphasis
dB
>78
Frequency Response
30Hz ÷ 15kHz
dB
better than ± 0.5 dB (typical ± 0.2)
Total Harmonic Distortion
THD+N 30Hz ÷ 15kHz
%
< 0.05 (Tipical 0.03%)
Intermodulation Distortion
Measured with a 1 KHz and 1.3 KHz tones, 1:1ratio, at FM 75 kHz
%
< 0.02
Transient intermodulation distortion
Measured with a 3.18 kHz square wave and a 15 kHz sine wave at 75 kHz FM
%
< 0.1 (typical 0.05)
MPX OPERATION
RMS @ ± 75 kHz peak, HPF 20Hz - no LPF, 50
μ
S de-emphasis
dB
> 75 (typical 79)
Qpk @ ± 75 kHz peak, CCIR weighted, 50
μ
S de-emphasis
dB
> 70 (typical 72)
Qpk @ ± 40 kHz peak, CCIR weighted, 50
μ
S de-emphasis
dB
> 67 (typical 69)
30Hz ÷ 53kHz
dB
± 0.2
53kHz ÷ 100kHz
dB
± 0.5
THD+N 30Hz ÷ 53kHz
%
< 0.05
THD+N 53kHz ÷ 100kHz
%
< 0.1
Intermodulation distortion
Measured with a 1 KHz and 1.3 KHz tones, 1:1, modulation at FM 75 kHz
%
< 0.05
Transient intermodulation distortion
Measured with a 3.18 kHz square wave and a 15 kHz sine wave at 75 kHz FM
%
< 0.1 (typical 0.05)
400Hz ÷ 5kHz
dB
> 70
40Hz ÷ 15kHz
dB
> 60
STEREO OPERATION
RMS @ ± 75 kHz peak, HPF 20Hz - LPF 23 kHz, 50
μ
S de-emphasis, L & R
demodulated
dB
> 80 (Typical 83)
Qpk @ ± 75 kHz peak, CCIR weighted, 50
μ
S de-emphasis, L & R demodulated
dB
> 70 (Typical 73)
Qpk @ ± 40 kHz peak, CCIR weighted, 50
μ
S de-emphasis, L & R demodulated
dB
> 67 (Typical 70)
Frequency Response
30Hz ÷ 15kHz
dB
± 0.5
Total Harmonic Distortion
THD+N 30Hz ÷ 15kHz
%
< 0.05
Intermodulation distortion
Measured with 1 KHz and 1.3 KHz tones, 1:1 ratio, modulation at FM 75 kHz
%
≤ 0.03
Transient intermodulation distortion
Measured with a 3.18 kHz square wave and a 15 kHz sine wave at 75 kHz FM
%
< 0.1 (typical 0.05)
400Hz ÷ 5kHz
dB
> 70
40Hz ÷ 15kHz
dB
> 60
Main / Sub Ratio
30Hz ÷ 15kHz
dB
> 40 (typical 45)
SCA OPERATION
Frequency response
40kHz ÷ 100kHz
dB
± 0.5
AUDIO INPUTS
Connector
XLR F
Type
balanced or externally unbalanced
Impedance
Ohm
10 k or 600
Input Level, Adjustment Range
dBu
-12.5 to +12.5
Connector
XLR F
Type
balanced or externally unbalanced
Impedance
Ohm
10 k or 600
Input Level, Adjustment Range
dBu
-12.5 to +12.5
Connector
BNC
Type
unbalanced
Impedance
Ohm
10 k
Input Level, Adjustment Range
dBu
-12.5 to +12.5
Connector
XLR, AES/EBU 24-96 KhZ
Type
balanced
Impedance
Ohm
75 or 110
Input Level, Adjustment Range
Vpp
+3 to +10
Digital SPDIF Optical
Connector
TosLink F05 - EIAJ
Impedance
Ohm
75
Input Level, Adjustment Range
Vpp
+0,5 to +1
Connector
2 x BNC
Type
unbalanced
Impedance
Ohm
10 k
Input Level, Adjustment Range
dBu
-12.5 to +12.5
OUTPUTS
Connector
N type
Impedance
Ohm
50
Connector
BNC
Impedance
Ohm
50
Output Level
dB
approx. -30
Connector
BNC
Impedance
Ohm
> 4,7 k
Output Level
Vpp
1
Connector
BNC
Impedance
Ohm
>600
Output Level
dBu
0
AUXILIARY CONNECTIONS
Interlock
Connector
BNC
RS232 Serial Interface
Connector
DB9 F
RS485 Serial Interface
Connector
Remote Interface
Connector
DB15F
Input 10 MHz
Connector
BNC
POWER REQUIREMENTS
AC Supply Voltage
VAC
115 / 230 ±15%
AC Apparent Power Consumption
kVA
0.14
Active Power Consumption
kW
0.07
Power Factor
0.51
Connector
IEC Standard
FUSES
On PA Supply
1 External fuse 6,3 AT - 5x20 mm
MECHANICAL DIMENSIONS
Front panel width
mm
483 (19")
Front panel height
mm
88 (3 1/2")
Overall depth
mm
400 (15,7")
Weight
kg
13
OPTIONS
Input 10 MHz
code
GPS
code
TELEMETRY-TELECONTROL SW
Telecon
Yes
VARIOUS
Cooling
Forced, with internal fan
Acoustic Noise
dBA
< 56
STANDARD COMPLIANCE
EN 60215:1989
EN 60215/A1:1992-07
EN 60215/A2:1994-09
ETSI EN 301 489-11 V1.2.1
ETSI EN 301 489-11 V1.4.1
ETSI EN 302 018-1 V1.1.1
ETSI EN 302 018-2 V1.1.1
Digital SPDIF Electrical
Connector
Cinch- RCA coaxial
Spectrum Optimization
Safety
EMC
Phisical Dimensions
S/N FM Ratio
Frequency Response
Total Harmonic Distortion
Stereo separation
Stereo separation
Composite S/N FM Ratio
Stereo S/N FM Ratio
Digital AES/EBU
SCA/RDS
Analog Left / MPX balanced
Analog Right balanced
Analog MPX unbalanced
RF Output
AC Power Input
RF Monitor
MPX Monitor
Pilot output
