Force SPARC/CPCI-520G, Technical Reference Manual

Page: 30 / 134

Installation Prerequisites and Requirements Installation
Page 16 SPARC/CPCI-52x(G)
Table 6 Audio interfaces requirements
Interface Description
Stereo Micro In
(op-amp pre-amp
with 18 dB gain) • Signal level: single-ended condensator microphones with signal
level
–up to 12 mV with 20 dB gain inside Codec enabled
–and up to 120 mV with 20 dB gain inside Codec disabled
• Availability: on front panel and as factory option on backplane
instead of Aux#2 In
Stereo Head-
phone/ Line Out • Signal level: maximum 2 V
RMS
line-level signal output (also
designed to directly drive headphones)
• Availability: on front panel and on backplane
Stereo Line In • Signal level: typical 47 k
Ω
audio input impedance; maximum full
scale input of 2 V
RM
• Availability: on backplane
Stereo Aux#1 In • Signal level: ~10 k
Ω
input impedance; maximum full scale input of
2 V
RMS
• Availability: on backplane
Stereo Aux#2 In • Signal level: ~10 k
Ω
input impedance; maximum full scale input of
2 V
RMS
• Availability: on backplane
Mono In • Signal level: typical 47 k
Ω
audio input impedance; nominally
1 V
RMS
maximum (centered around 2.1 V) input signal level
• Availability: as factory option on front panel instead of Micro In and
as factory option on backplane instead of Aux#1 In
Mono Out • Signal level depends on the setting of
OLB
which is a bit in the
Codecs Alternate Feature Enable I register (I16)
–maximum 1 V
RMS
output (centered around 2.1 V) if
OLB
=
1
–or maximum 0.707 V
RMS
(centered around 2.1 V) if
OLB
=
0
Default is
OLB
=
0
.
• Availability: as factory option on backplane instead of Head-
phone/Line Out