ADA-21S STEREO AUDIO DISTRIBUTION AMPLIFIER
ADA-21
Doc. No. – 14466
Page 3 of 3
ADJUSTMENTS:
The ADA-21S has no adjustments other than the front panel gain control.
SPECIFICATIONS:
INPUT: ...............................................Dual channel, Balanced, +24 dBm Maximum
INPUT IMPEDANCE: ........................30 k
Ω
Balanced, DC coupled
OUTPUT: ...........................................+24 dBm Maximum
OUTPUT
IMPEDANCE:
....................100
Ω
Balanced, DC coupled
LEFT/RIGHT SEPARATION: ............All outputs driven into 600
Ω
, unused input terminated.
............................................................Greater than 80 dB, 20 Hz to 20 KHz
HUM and NOISE: ..............................less than -80 dBm at Unity Gain, 22Hz to 22Khz filter
less than -65 dBm at +27 dB Gain, 22Hz to 22Khz filter
THD+N:
.............................................Into
600
Ω
, 22Hz to 22Khz filter, 0dBm to +24 dBm
less than 0.05% 20 Hz to 20KHz)
IND (SMPTE 4:1 60Hz/7KhZ): ..........same conditions as THD+N, less than 0.02%
GAIN RANGE: ...................................(-6) to +24 dB in 6dB steps,±3dB vernier when terminated into 600
Ω
.
GAIN VARIATION: ............................±0.3 dB
CMR: .................................................Greater than 70 dB at 60 Hz, 60 dB at 20 KHz
0dBm to +24dBm
RESPONSE: ......................................Into 600
Ω
, ±0.2 dB, 20 Hz to30 KHz
TECHNICAL MANUAL:
A manual including schematics, circuit description, parts list and setup guide is available upon request. This
information is intended for the service of the module. Modules should be serviced by Qualified Personnel only!
Sigma Electronics, Inc. recommends service to be performed by our Factory Service Center.
All specifications, drawings, dimensions, weights and other details are subject to change without notification.
Information is intended to give a general performance and operation guideline of the product.
Sigma Electronics, Inc.; P.O.Box 448; 1027 Commercial Avenue; East Petersburg, PA 17520-0448
Main Office: Tel: (717) 569-2681 Fax: (717) 569-4056
REV1 JUN00
ADA-21S
