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Leader LG 3219 RDS Standard Signal Generator

BH #LELG3219 • MFR #LG3219
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Leader LG 3219 RDS Standard Signal Generator
Key Features
  • Generates CW, AM, FM, AM/FM Signals
  • 100 kHz to 140 MHz Range
  • CW & FM Signals in 162-163 MHz Range
  • RF Signals Phase-Locked to Crystal
The Leader LG 3219 RDS Standard Signal Generator generates AM, FM, CW, and simultaneous AM/FM signals in the frequency range of 100 kHz to 140 MHz, as well as FM and CW signals in the 162-163 MHz range. The generator features monaural FM and AM functions and an FM stereo modulator that complies with FM stereo broadcast standards. The LG 3219 can be used as an automation device for the manufacturing and inspection of AM and FM receivers and other electronic components, and it can also be used as a signal generator for research and development or for servicing electronics.

The cost-effective, highly stable signal generator is also equipped with RBDS (Radio Broadcast Data System), RDS (Radio Data Systems) and TRI (Traffic Radio Information – also known as ARI) modulators. RDS is a digital data transmission system for FM radio broadcasts used in many European countries. TRI is used to provide traffic information in Europe, and RBDS is used in the U.S. During FM stereo modulation, these signals can be multiplexed into composite stereo modulation signals.

The LG 3219 produces synthesized, accurate radio frequency signals that are phase-locked at all times to an internal reference crystal oscillator. Fundamental oscillation is used to generate many frequencies (70-140 MHz and 162-163 MHz), and others are derived from these using either the heterodyne method (100 kHz - 35 MHz) or the 1/2-frequency division method (35-70 MHz). Frequency resolution is 100 Hz.

The generator can apply frequency modulation and amplitude modulation simultaneously, in order to combine internal modulation signals with one external modulation signal.

The output level can be set to a value from -20 dBμV (emf) to 126 dBμV (emf) in 0.1 dB steps. With the exception of the use of a relay to switch to 106 dBμV (emf), a solid-state attenuator is used to switch the output levels in order to extend the generator's service life.

The ΔF function can be used to get a direct reading of how much the frequency is offset from the reference frequency. The frequency can be changed in preset steps. Likewise, the ΔdB function can be used to get a direct reading of how much the output level is offset from the reference level. Like the frequency, the output level can be changed in preset steps.

A preset function allows the user to store 100 sets of frequency, output level, modulation mode, and external-control output-signal settings. Front-panel settings are retained when the power is turned off, and restored when the unit is turned back on. Remote control is possible via RS-232C, GP-IB, and external control interfaces.

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Leader LG3219 Overview

The Leader LG 3219 RDS Standard Signal Generator generates AM, FM, CW, and simultaneous AM/FM signals in the frequency range of 100 kHz to 140 MHz, as well as FM and CW signals in the 162-163 MHz range. The generator features monaural FM and AM functions and an FM stereo modulator that complies with FM stereo broadcast standards. The LG 3219 can be used as an automation device for the manufacturing and inspection of AM and FM receivers and other electronic components, and it can also be used as a signal generator for research and development or for servicing electronics.

The cost-effective, highly stable signal generator is also equipped with RBDS (Radio Broadcast Data System), RDS (Radio Data Systems) and TRI (Traffic Radio Information – also known as ARI) modulators. RDS is a digital data transmission system for FM radio broadcasts used in many European countries. TRI is used to provide traffic information in Europe, and RBDS is used in the U.S. During FM stereo modulation, these signals can be multiplexed into composite stereo modulation signals.

The LG 3219 produces synthesized, accurate radio frequency signals that are phase-locked at all times to an internal reference crystal oscillator. Fundamental oscillation is used to generate many frequencies (70-140 MHz and 162-163 MHz), and others are derived from these using either the heterodyne method (100 kHz - 35 MHz) or the 1/2-frequency division method (35-70 MHz). Frequency resolution is 100 Hz.

The generator can apply frequency modulation and amplitude modulation simultaneously, in order to combine internal modulation signals with one external modulation signal.

The output level can be set to a value from -20 dBμV (emf) to 126 dBμV (emf) in 0.1 dB steps. With the exception of the use of a relay to switch to 106 dBμV (emf), a solid-state attenuator is used to switch the output levels in order to extend the generator's service life.

The ΔF function can be used to get a direct reading of how much the frequency is offset from the reference frequency. The frequency can be changed in preset steps. Likewise, the ΔdB function can be used to get a direct reading of how much the output level is offset from the reference level. Like the frequency, the output level can be changed in preset steps.

A preset function allows the user to store 100 sets of frequency, output level, modulation mode, and external-control output-signal settings. Front-panel settings are retained when the power is turned off, and restored when the unit is turned back on. Remote control is possible via RS-232C, GP-IB, and external control interfaces.

Wide-Band, High-Level Output
Covers a wide frequency range from 100 kHz to 140 MHz and generates a high level of output at 126 dBμV (emf)
High Stability
The RF output signal is always phase-locked to the internal crystal oscillator to ensure high stability at ±5 parts per million
Long Service Life
A solid-state attenuator is used for varying the RF output signal level to extend the generator's service life
Output-Signal Setting Adjustment
The rotary knob can be used to change a specific digit of an RF frequency, output level, or depth setting
Weather Band Output
The generators can internally produce RF output from 162.0000 MHz to 163.0000 MHz (only FM monaural modulation)
Internal Stereo Modulator
Equipped with an FM stereo modulator, a single LG 3219 can generate stereo modulation signals for performing tests and measurements on FM multiplex receivers
RDS and TRI Signal Sources
Equipped with an RDS or an RBDS signal source and a TRI (or ARI) signal source, a single LG 3219 can generate modulated signals for performing tests and measurements on FM multiplex receivers
DDS for Internal Modulation
As an internal modulation signal source, the generator has a DDS in addition to an RC oscillator. The DDS enables frequency settings ranging from 20 Hz to 20 kHz in 1 Hz steps. It can be used to test the frequency response of receivers
Modulation Modes
Modulation off, monaural, L=R, L, R, and L=-R
Pilot Signal
The pilot signal can be turned on and off independently, and the signal level ratio can be specified. (The pilot signal is always off when the modulation mode is monaural)
Pre-Emphasis
The time constant can be set to 25 μs, 50 μs, or 75 μs
SCA Input
The SCA input signal is approximately 0.56 Vp-p, which corresponds to a level ratio of 10%
Preset Function
Up to 100 sets of RF-frequency, output-level, modulation-mode, stereo-mode, and other settings can be stored as presets
RDS Signals & RDS Data Editor
The LG 3219 can generate RDS and RBDS signals. The RDS Data Editor for creating original RDS data is included
TRI (or ARI) Signal
Equipped with a TRI (or ARI) signal generator, the LG 3219 can generate TRI and RDS signals together. (TRI signals are defined in CENELEC EN 50067 and are being broadcasted in various European countries)

Leader LG3219 Specs

Frequency
Range
0.1 MHz to 140 MHz
Resolution
100 Hz
Frequency Bands
Band 1: 0.1000 MHz to 35.0000 MHz
Band 2: 35.0001 MHz to 70.0000 MHz
Band 3: 70.0001 MHz to 140.0000 MHz
Accuracy
±5×10-6
Internal Reference Oscillator Temp. Stability
±5×10-6
Output Level
Range
-20 dBμV [emf] to 126 dBμV [emf]
Resolution
0.1 dB
Accuracy
±1.5 dB (output level ≥ 0 dBμV [emf])
±2.0 dB (output level < 0 dBμV [emf])
Impedance
50 Ω
VSWR
≤ 1.3 (output level ≤ 101 dBμV)
Attenuator Contact
Solid-state
Spectral Purity
Spurious Output
Harmonics (2nd, 3rd): ≤ -30 dBc
Non-Harmonics: ≤ -50 dBc (bands 2 and 3)
≤ -40 dBc (band 1: 0.1 MHz ≤ fs ≤ 35 MHz)
≤ -30 dBc (band 1: fs ≥ 35.0001 MHz)
(at 10 kHz or more away from the carrier fs: spurious output frequency)
Residual Modulation
FM Component: ≥ 76 dB (10.7 MHz ± 1 MHz, 76 MHz to 108 MHz) ≥ 73 dB (bands 1 to 3: 0.3 MHz to 140 MHz) (S/N at 1 kHz modulation frequency, 75 kHz deviation. 50 Hz to 15 kHz demodulation bandwidth, 50 μs de-emphasis.)
AM Component: ≥ 55 dB (band 1: 0.4 MHz to 1.7 MHz) ≥ 50 dB (bands 1 to 3: 0.15 MHz to 140 MHz) (S/N at 1 kHz modulation frequency, 30 % depth. (Beat components are excluded.) 50 Hz to 15 kHz demodulation bandwidth.)
Modulation
RC Oscillator
Frequency: 400 Hz, 1 kHz
Accuracy: ≤ ±3 %
External Modulation Input
Impedance: Approx. 10 kΩ
Voltage: Approx. 1 V [peak]
Amplitude Modulation (AM)
Optimal Range
Frequency ≥ 0.15 MHz
Depth
0% to 80%
Displayed Depth
0% to 100%
Resolution
0.5% (0% to 100%)
Accuracy
±(Setting × 0.1 + 1)%
(Band 1: 0.4 MHz to 1.7 MHz)
±(Setting × 0.1 + 2)%
(Bands 1 to 3: 0.15 MHz to 140 MHz)
(Depth at 1 kHz modulation frequency.
The maximum setting is 80%.)
Distortion
Band 1: 0.4 MHz to 1.7 MHz
≤ 0.5% (0% to 30% AM)
≤ 1.5% (30% to 60% AM)
≤ 3% (60% to 80% AM)
Bands 1 to 3: 0.15 MHz to 140 MHz
≤ 1.5% (0% to 30% AM)
≤ 3% (30% to 60% AM)
≤ 5% (60% to 80% AM)
(1 kHz modulation frequency by the RC oscillator, 50 Hz to 15 kHz demodulation bandwidth, beat components are excluded)
Incidental FM
≤ 150 Hz (band 1: 0.4 MHz to 1.7 MHz)
≤ 300 Hz (bands 1 to 3: 0.15 MHz to 140 MHz)
(at 1 kHz modulation frequency, 30 % depth)
Ext. Modulation Freq. Response
±1 dB (1 kHz reference)
20 Hz to 10 kHz
(Maximum modulation frequency ≤ 2 % of carrier frequency for 30 % AM)
Frequency Modulation (FM)
Optimal Range
Frequency ≥ 0.3 MHz
Frequency Deviation Range
0.0 kHz to 100 kHz
(Band 1's maximum FM deviation ≤ 25 % of the carrier frequency)
Resolution
0.5 kHz
Accuracy
±(Setting × 0.1 + 0.5) kHz
(10.7 MHz ± 1 MHz, 76 MHz to 108 MHz)
±(Setting × 0.1 + 1) kHz
(Bands 1 to 3: 0.3 MHz to 140 MHz)
Distortion
≤ 0.05 % (10.7 MHz ± 1 MHz, 76 MHz to 108 MHz)
≤ 0.1 % (bands 1 to 3: 0.3 MHz to 140 MHz)
(1 kHz modulation frequency, 75 kHz deviation, 50 Hz to 15 kHz demodulation bandwidth, 50 μs de-emphasis)
MPX Stereo Signal Separation
≥ 55 dB
(76 MHz to 108 MHz frequency, 1 kHz modulation frequency, 100% depth, 67.5 kHz deviation)
Incidental AM
≤ 0.5% (10.7 MHz ± 1 MHz, 76 MHz to 108 MHz) (1 kHz modulation frequency, 75 kHz deviation)
Ext. Modulation Freq. Response
MONO Mode: ≤ ±1 dB (20 Hz to 100 kHz, 1 kHz reference)
Not MONO Mode: ≤ ±1 dB (20 Hz to 15 kHz, 1 kHz reference)
Pre-Emphasis
25 μs, 50 μs, 75 μs, off (amplitude characteristics based on the off setting)
FM Stereo
Optimal Range
Frequency ≥ 0.3 MHz
Main & Sub Channel Signals
L=R Modulation Mode: INT, EXT signal; stereo modulation based on one signal
L Modulation Mode: INT, EXT signal; stereo modulation based on one signal
R Modulation Mode: INT, EXT signal; stereo modulation based on one signal
L = -R Modulation Mode: INT, EXT signal; stereo modulation based on one signal
MONO Modulation Mode: INT, EXT signal; monaural modulation
Depth
Range: 0% to 127%
Resolution: 1%
Accuracy: ±(Setting × 0.1 + 1)%
(10.7 MHz ± 1 MHz, 76 MHz to 108 MHz)
±(Setting × 0.1 + 1.5)%
(Bands 1 to 3: 0.3 MHz to 140 MHz)
Pilot Signal
Frequency: 19 kHz Accuracy: ±1 Hz
Level Ratio Range: 0.0% to 15.0%
Level Ratio Resolution: 0.1%
Level Ratio Accuracy: ±(Setting × 0.1 + 1)%
(10.7 MHz ± 1 MHz, 76 MHz to 108 MHz)
Stereo Separation
≥ 55 dB (400 Hz to 1 kHz modulation frequency)
(at 10.7 MHz ±1 MHz, 76 MHz to 108 MHz)
38 kHz Subcarrier Leakage
≤ -50 dB
Distortion
≤ 0.05% (10.7 MHz ± 1 MHz, 76 MHz to 108 MHz) (1 kHz modulation frequency, 100 % depth, 50 Hz to 15 kHz demodulation bandwidth, 50 μs de-emphasis)
Pre-Emphasis
25 μs, 50 μs, 75 μs, off (amplitude characteristics based on the off setting)
Simultaneous AM & FM
FM Mono, AM
(1) FM mono (EXT) - AM (INT)
Simultaneous Modulation
(2) FM mono (INT) - AM (EXT)
(3) FM mono (EXT) - AM (EXT)
(4) FM mono (INT) - AM (INT)
FM Stereo, AM
(1) FM stereo (EXT) - AM (INT)
Simultaneous Modulation
(2) FM stereo (INT) - AM (EXT)
(3) FM stereo (EXT) - AM (EXT)
(4) FM stereo (INT) - AM (INT)
Preset Function
Description
Stores and recalls these settings: frequency, output level, modulation mode (AM/FM, external/internal, depth, on/off), external control output. (Maximum number of presets: 100)
DDS Signal
Oscillation System
12-bit direct digital synthesizer
Frequency Range
20 Hz to 20 kHz
Resolution
1 Hz
Frequency Accuracy
±0.1%
Flatness
Same as the external modulation characteristics
Weather Band Output
Frequency Range
162.0000 MHz to 163.0000 MHz
Resolution
100 Hz
Frequency Accuracy
±5×10-6
Optimal Modulation Mode
FM monaural
External Interface
SCA Input
Input Level: 0.56 V [P-P] (0.2 V [rms]) (corresponds to a level ratio of 10%)
Frequency Range: 20 kHz to 99 kHz, ±1 dB (57 kHz reference)
Input Impedance: Approx. 10 kΩ
Comp Output
Modulation signal's monitor output connector
Output Voltage: Approx. 5 V [P-P] (into 600 Ω, 100 kHz FM mono)
Output Impedance: Approx. 600 Ω
Pilot Output
Output for modulation modes other than MONO
Output Voltage: Approx. 1V [rms]
Output Impedance: Approx. 1 kΩ
GP-IB
Source handshaking: SH1 (Full capability)
Acceptor handshaking: AH1 (Full capability)
Talker: T7 (Basic talker, untalk on MLA, talk-only)
Listener: L3 (Basic listener, unlisten on MTA, listen-only)
Service request: SR0 (No capability)
Remote/Local: RL1 (Full capability)
Parallel polling: PP0 (No capability)
Device clear: DC1 (Full capability)
Device trigger: DT0 (No capability)
Controller: C0 (No capability)
RS-232C
Baud Rate: 38400 bps
Character Length: 8 bits
Parity: EVEN
Flow Control: Xon, Xoff
Stop Bits: 1 bit
External Control Interface
Description:
(1) Remote sequential recall
(2) Remote modify
(3) Remote direct recall
(4) Control output
(5) Relay drive output
Output voltage: Approx. 5V
Output current: Approx. 50mA
RDS Signal
Level Range
0.0% to 10% (75 kHz FM deviation is taken to be 100%)
Level Resolution
0.1%
Accuracy
±(Setting × 0.1 + 0.5)%
Spurious Output
≤ -50 dB (at 53 kHz, 10% output)
≤ -40 dB (at 61 kHz, 10% output)
Subcarrier
Frequency Accuracy: 57 kHz ± 6 Hz
Phase: 0° or 90° (with respect to the pilot signal)
Phase Accuracy: ±10°
Leakage: ≤ -50 dB
Internal Data Mode
Subcarrier, null data, internal data
Patterns
16 patterns maximum
Pattern Length
2048 groups maximum
* The LG 3219 does not contain RDS pattern data.
TRI (or ARI) Signal
SK Signal
Level Range: 0.0% to 10% (75 kHz FM deviation is taken to be 100%.)
Level Resolution: 0.1%
Accuracy: ±(Setting × 0.1 + 0.5)%
Frequency Accuracy: 57 kHz ± 6 Hz
Phase: 0° (with respect to the pilot signal)
Phase Accuracy: ±10°
DK Signal
Frequency Accuracy: 125 Hz (57 kHz / 456) ± 1%
AM Depth: 0% to 40%
AM Resolution: 1%
AM Accuracy: ±5%
AM Distortion: ≤ 1% (SK = 5.3%, AM = 30%)
BK Signal
Frequency Accuracy:
Code A: 23.75 Hz (57 kHz / 2 400) ± 1%
Code B: 28.27 Hz (57 kHz / 2 016) ± 1%
Code C: 34.93 Hz (57 kHz / 1 632) ± 1%
Code D: 39.58 Hz (57 kHz / 1 440) ± 1%
Code E: 45.67 Hz (57 kHz / 1 248) ± 1%
Code F: 53.98 Hz (57 kHz / 1 056) ± 1%
AM Depth
0% to 80%
AM Resolution
1%
AM Accuracy
±5 %
AM Distortion
≤ 2% (SK = 5.3%, AM = 60%)
Power Requirements
Voltage Range
90 to 250110V AC
Frequency
50/60 Hz
Power Consumption
≤ 60VA
Temperature and Humidity Range
Operating Temperature
0° C to 40° C, 20% to 90% (relative humidity)
Overvoltage Category
Overvoltage Category
CAT II
Dimensions & Weight
Dimensions
3.9 x 16.8 x 11.8" (99 x 426 x 300mm)
(Without knobs or buttons)
Weight
19.8 lb (9.0 kg)

Leader LG3219 Reviews

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