General Specifications
Subcarrier Frequency: 39 kHz, 41 kHz, 67 kHz, 92 kHz, 110 kHz, 152 kHz, or 185 kHz. Frequency test jack on front panel.
Frequency Stability: +/- 0.18%, -10 degrees C to +50 degrees C.
Subcarrier Purity: Less than 0.5% THD
FM Deviation: Factory set for +/- 7.5% of subcarrier frequency
Modulator Distortion: Less than 1% THD
Audio Processing: Pre-emphasis: 0, 75, 150, 225 microseconds, user selectable
Audio Processing: Low-pass Filters: Audio cut-off frequencies of 3 kHz, 5 kz or 7.5 kHz, are specified with original equipment order. The lowest possible cut-off frequency is recommended. Maximum cut-off is 12% of subcarrier frequency.
Audio Processing: Companding: An optional compander decode board is avaialble for installation in the SCG 10 when used in a subcarrier link havig a SCD 10 subcarrier demodulator with a compander decode board. Companding will reduce noise and can mask certain types of main channel to subcarrier cross-talk.
Frequency Response: +/-1.5 dB, 25 Hz to 95% of low-pass filter cut-off frequency.
FM Noise: More than 68 dB below 5 kHz deviation (measured through SCD 10 demodulator directly connected to SCG 10 output, 225 microsecond pre-emphasis, without companding.) With companding -72 dB.
Audio Input Impedance: 600 ohms balanced (screw terminals or "D" connector pins.)
Muting Level: Adjustable from 0 dB to 40 dB below 100% modulation. (soft mute).
Muted Carrier Level: 60dB below rated maximum output level
Subcarrier Output: Front panel adjustment, 0.3v to 7.0v P-P input 600 ohms. (BNC).
Remote Control: Remote control by grounding pin 4 of accessory "D" connector
Metering: Illuminated, indcates peak modulation or subcarrier output level.
Controls: Meter Switch, Subcarrier Control Switch, Modulation Level, Automatic Mute Delay, Mute Level, Subcarrier Output Level, Subcarrier Frequency, Subcarrier Frequency Test Jack (located on front panel)
Connectors: BNC jack for subcarrier output, 9 pin "D" connector for balanced audio input, remote control, FSK input, ground, +18 to 20 volt input, +13.5 volt input, AC receptacle, 6-32 screw terminals for balanced 600 ohm audio input.
RF Protection: All input/output circuits filtered for RF. Totally shielded and bonded aluminum enclosure.
Operating Temperature Range: -10 degrees C to +50 degrees C.
Power Requirements: 120/220/240 VAC (voltage to be specified on original order), 50/60 Hz, 10 watts or 12-14 VDC at 50 ma negative ground or 24-28 VDC at 70 ma (28 volt operation require the APS-28/18 power supply)
AC Fuse Rating: For 120 V, use 3/8 amp fuse.
Physical Specifications
Weight: 4.5 pounds 2.1 kilograms
Dimensions: 1-3/4 inches high x 19 inches wide x 12 inches deep. 4.45 cm high x 48.26 cm wide x 30.48 cm deep
Shipping Weight: 9 pounds domestically. 4.1 kilograms export.
Special Notes
Specifications subject to change without notice.
All Specifications Subject to Change Without Notice
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