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Exciters - PLL

 
 



ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ
30, 50 or 100 Watts & Excellent Audio Specs in ultra slim size, one rack space stainless enclosure Built-in, selectable Very High Separation internal Stereo Generator and Fast Audio Clipper, standard
. USB port (front) for PC connection and two independent RS 485 ports (rear), standard
. Up to seven presets (freq, pwr & program setup) allowing for ideal back up to multiple stations, standard
. Built-in, front panel programmable FSK ID Keyer by software for auto-ID of Translators, standard
Full Telemetry & Remote Control interface built-in, standard
. Fast access to programmability, functions & all readings from front panel via user-friendly menu display
. Proportional Auto-Foldback of output power in the event of excessive VSWR
. Adjustable power output from 0 to full power with soft-start control
. Automatic power control maintaining the output at any pre-set level
. Voltage selector for 120 or 230 V AC operation
. Optional DC voltage input
. Optional AES-EBU Digital Audio input (XLR type and Optical type)
. Optional Sync Port to lock frequency onto 1, 2, 2.5, 5 or 10 MHz External Reference
. Optional Built-in RDS Encoder
. Modular layout with plug-in, easily replaceable circuits and parts
. Meets or exceeds all FCC and CCIR requirements
. Includes low pass/harmonic filter and can be used as a stand-alone transmitter
RF SPECIFICATIONS
Nominal RF power: 30, 50 or 100 W adjustable from 0 to Full Power
RF output impedance: 50 OM unbalanced, VSWR less than 1.5:1
RF connector: N Type Female
Frequency range: 87.5 - 108 MHz programmable in 10 kHz steps, synthesized, microprocessor controlled
Off lock attenuation:> 60 dBc
Lock-in time: < 20 sec. (typ. < 7 sec)
Type of modulation: F3E / F8E direct FM at carrier frequency
Frequency deviation: }75 kHz =100 %, }150 kHz capability
Reference: 12.8 MHz VTCXO
Stability of freq. dev: 2,5 % x 6 mo.
Consistency of deviation over range:
< 2% from 87.5 to 108 MHz
Frequency drift: . 2 kHz/year (due to internal TCXO aging). Can be user calibrated
Short term stability: 1 ppm from -5 to +45 (100 Hz @ 100MHz)
RF Harmonics: Exceeds EBU/ CCIR/FCC requirements >70dBc
RF Spurious: ExceedsEBU/ CCIR/FCC requirements, < -90dBc min @ }1 MHz
RF Monitor: -40dBc}3dB from 87.5 to 108 MHz (not suitable for measuring harmonics)
. AUDIO GENERAL SPECIFICATIONS
Preemphasis: Flat/50/75 μs, Êprocessor controlled
Preemphasis precision: better than 0.5 dB
Stereo System: CCIR / FCC pilot tone system
Distortion, THD: Less than 0.1% (typ. 0.05%)
Intermodulation (IMD): Less than 0.1% (typ. 0.05%)
Transient IMD:< 0.25% (square / sine Wave)
Wideband Amplitude Response: } 0.25 dB, 30 Hz to 100 kHz
Audio Filter Attenuation: > 50 dB @ 19 kHz, >30dB 19 to 50 kHz, >50dB to 100kHz (typ.)
Common mode rejection: > 40 dB typ. 30 Hz to15kHz (50dB on request)
. COMPOSITE SPECIFICATIONS
Stereo Separation: 30-80Hz >50dB, 80Hz-15kHz >60 dB (typ.65)
Crosstalk attn. (M / S):> 40 dB 40 Hz to 15 kHz (typ. 50dB / 100Hz to 8kHz)
Audio Spurious Products: > 53 kHz < 50 dB
38 kHz Suppression: > 50 dB
38 kHz Tone Generation: Internal Crystal
38 kHz Tone Precision: 38 kHz } 2 Hz
Pilot Tone frequency: 19 kHz } 1 Hz
Phase response: 19/38 kHz internally adjustable
THD on L & R channels: < 0.1% 30Hz - 15 kHz
IMD: 70 Hz / 6 kHz 4 :1 RATIO < 0.1 %
Transient IM: < 0.25 % (square/sinus)
Audio response: 0.25 dB 20 Hz to 15 kHz
Pilot Tone Deviation: 7 kHz nominal
. AUDIO INPUTS
SCA / RDS Input: 1 BNC connector, unbalanced, Z nominal~3 kOhm (2.8-3 +6 dBm @ 7.5 kHz, Dev. adj. on rear panel
AUX Input: 1 BNC conn, unbal., Z nominal ~3 kohm (2.8MPX Input: 1 BNC conn., unbalanced, Z nominal~1k2 ( 1k2 } 10 %), Lev: -3 + 6 dBm @ 75 kHz Deviation, adj. on rear panel
L&R +Mono Input: 2 XLR connectors, balanced or unbalanced; Z nominal 10 kOhm } 1% or 600 Ohm 1%; selectable by menu; selectable Lev: -3 +6 dBm @ 75 kHz Deviation. Coarse steps 3 dB Fine adj 3.5dB 1.75, adjustable on rear panel

LCD Display Readings: Programmed Output Power; Forward Power; Refl. Power; Unclipped Deviation (simulated Led Bar); Clipped Deviation (simulated Led Bar); Clipper activity (clipped / unclipped differential); L Audio True Peak Level (simulated Led Bar); R Audio True Peak Level (simulated Led Bar); Frequency (6 digits); Sensitivity (3dB step); RDS, SCA, AUX, MPX Ext Modulation; Programmed Audio Parameters; Preemphasis (Flat, 50, or 75μs); Limiter On/Off; Input Impedance; Z=10kOhm / 600 Ohm; Preset Thresholds (min. RF power, mute time)
ΠΛΗΡΟΦΟΡΙΕΣ: Scott

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