Revision History - Benchmark DAC1 Instruction Manual

Benchmark Media Systems, Inc.

Revision History:

Revision Filename
A DAC1 – Manual – Rev A. Doc
B DAC1 – Manual – Rev B. Doc
C DAC1 – Manual – Rev C. Doc
D DAC1 – Manual – Rev D. Doc
E DAC1 – Manual – Rev E. Doc
F DAC1 – Manual – Rev F. Doc
G DAC1 – Manual – Rev G. Doc
H DAC1 – Manual – Rev H. Doc
I DAC1 – Manual – Rev I. Doc
J DAC1 – Manual – Rev J. Doc
K DAC1 – Manual – Rev K. Doc
L DAC1 – Manual – Rev L. Doc
M DAC1 – Manual – Rev L. Doc
N DAC1 – Manual – Rev L. Doc
Manual Revision Notes:
Revision Note
I Added 176.4 and 192kHz phase and latency specifications.
J Updated PCB revision notes for PCB revision G.
K Corrections on page 17 – factory default
L RoHS notes and Warranty update, Corrections on page 9 – 192 kHz Optical Input
M Clarification to calibration 'Caution' statement
N Updated output levels in variable mode
PCB Revision Notes:
PCB Rev. Note
C Added internal 10, 20, and 30 dB pads with jumpers for XLR outputs.
F Changed unbalanced output impedance to 30Ω Ω Ω Ω , upgraded optical input for 192kHz
capability, reduced DC offsets, added balance trim pot.
G Minor change to BUF634 mounting pads. No circuit or performance changes.
Date PCB Rev.
10/01/02 A
11/27/02 A
05/08/03 C
07/11/03 C
08/04/03 C
03/01/04 C
06/03/04 C
11/22/04 F
01/13/06 F, G
03/08/06 F, G
05/16/06 F, G
01/31/07 F, G
01/10/09 F, G
10/26/09 F, G
Page 2 of 39
Author
John Siau, Allen Burdick
John Siau
John Siau
John Siau
John Siau
Allen Burdick
Allen Burdick
John Siau
John Siau
John Siau
John Siau
Allen Burdick, John Siau
Elias Gwinn
Elias Gwinn