|
SYSTEM
SPECIFICATIONS
|
|
The
following are typical and apply for 70dB gain, rms, 20Hz – 20kHz, RS
= 150 ohms, RL = 100k ohms, balanced, symmetrical, TA = 25°C, AUX out option, and all outputs driven, unless
otherwise noted.
|
|
| Preamplifier |
| Channels |
1 |
| Input |
differential |
|
Impedance, balanced |
2M ohms
nom || 100pF |
|
Unbalanced |
1M
ohms nom || 180pF |
|
Phantom |
13.6k
ohms |
| Maximum
level |
See
DR graph |
| Equivalent
input noise |
See
DR graph |
| Common-mode
rejection ratio |
>
110dB |
| Frequency
response |
±0.04dB |
| Bandwidth |
3Hz
– 200kHz |
| Gain
range |
7.5
– 70dB
|
|
Step |
2.5dB |
|
Accuracy |
±0.1dB |
|
Tracking |
0.1dB |
|
Control range |
12.5
– 70dB |
|
Positions |
24 |
| AUX
input |
non-differential |
|
Impedance, balanced |
2M
ohms nom || 60pF |
|
Unbalanced |
1M
ohms nom || 120pF |
|
Maximum level |
+30dBu |
|
Equivalent input noise |
–111dBu |
|
Frequency response |
±0.00dB |
|
Bandwidth |
1Hz
– > 300kHz |
|
Gain |
0dB |
| Output,
AUX output |
|
|
Impedance, common-mode |
6
ohms |
|
Max level (RL= 600 ohms) |
+30dBm |
|
Offset |
±0.5mVdc |
| Peak
indicator level |
+24dBu |
|
Hold time |
100ms |
| Phantom
supply |
+48Vdc,
14mA |
| Power
supply |
|
|
Mains options (50 – 60Hz) |
100,
120, 240Vac |
|
Operating range |
±15% |
|
Power consumption |
19VA |
| Leakage
current (60Hz) |
20uA |
|
Dimensions |
1U,
19in rackmount |
| |
10in
(254mm) D FMS |
|
Weight |
8.8lb
(4.0kg) |
| Dynamic
Range |
The
maximum input level is limited only by the maximum output level of
+30dBm at or less than 0.1%THD, as the output stage clips before the
input stage at all gain settings. |
|
| Signal
Path with AUX Input and Output Options |
 |
|
| Outboard
Gain Control |
| Channels,
GC62 |
2 |
|
GC64 |
4 |
| Control range |
12.5
– 70dB |
|
Positions |
24 |
| Control
signal* |
4Vdc,
78uA |
| Peak indicator
level |
+24dBu |
|
Hold time |
100ms |
| Dimensions |
1U,
19in rackmount |
| |
3in
(75mm) D FMS |
| Weight, GC62 |
2.0lb (0.9kg) |
|
GC64
|
2.3lb (1.0kg)
|
| *The
control link from preamp to gain control is a dc control signal (no
audio) via mic cable, 2 channels per cable, XLR male to female, with all
3 pins straight-wired. The signal is mic snake compatible and noise
tolerant. |
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