DESCRIPTION

Output Module. The ALTEC LANSING 1783 line output module provides the drive capability necessary to interface with other professional equipment. The electronically balanced output stage provides a low source impedance to drive subsequent stages. If transformerisolation is necessary, the module's circuit board accommodates the optional PC-mount 1786 output isolation transformer. The continuously variable output level control is local to the module permitting independent adjustment of each line output.

SPECIFICATIONS
1783 LINE OUTPUT MODULE
Output Type: Electronically balanced Output Source
Impedance: <500 Nominal Output
Level/Load
Impedance: +8 dBm/600U
(Ref. 1 kHz, 0 dBm = 0.775 Vrms across 600 f2 load, output level control at maximum, 100 mVrms input) Maximum Output
Level: +24 dBm
Frequency Response (Ref. 1 kHz, +8 dBm output)
Without 1786
+1 dB 20 Hz - 25 kHz
±3 dB 10 Hz - 50 kHz Without 1786
±1 dB 30 Hz - 20 kHz
±3 dB 15 Hz - 40 kHz
Total Harmonic Distortion (THD): (Ref. 1 kHz, +8 dBm output, output level control at maximum, 30 kHz low pass filter)
Without 1786
20 Hz - 20 kHz <0.05% Without 1786
20 Hz - 20 kHz <0.1%
Signal-to-Noise Ratio: >88 dBm
(Below +8 dBm output, output level control at maximum, A-weighted)
Control: 1- Output level control
Weight (Net): 2.2 oz (63 gr)
Power Requirements: +18 VDC at 20 MA. (Supplied by mainframe)
Included Accessories: 2 - mounting screws
(for protentiometer bracket)
Optional Accessories: 1786 Output Isolation
Transformer
1786 OUTPUT ISOLATION TRANSFORMER
Impedance Ratio: 6000:6000
(Primary: Secondary)
Frequency Response: (Ref. 1 kHz, +18 dBm output)
+1 (113 20 H7 - 20 Hz
±3 dB 10 Hz - 40 Hz
Total Harmonic Distortion (THD): (Ref. 1 kHz, +18 dBm output)
20 Hz - 20 Hz <0.5%
50 Hz - 20 Hz <0.1%
Insertion Loss: <1 dB (Ret. 1 kHz, +18 dBm output)
ALTEC LANSING continually strives to improve their products and performance. Therefore specifications are subject to change without notice.