Sigma ADA-21S User Manual

 

 

ADA-21 

Doc. No. – 14466 

Page 3 of 3

 

 

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 

 

 

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