Controls; Gain Control - True Systems Precision 8I Bedienungsanleitung

Front Panel Controls
Overload Warning
indicator "Ol"
Peak Hold
indicators

gain control

Phantom Power Switch
"48V"
Phase reverse Switch "ø"
Signal Present
indicator "Sig"
Operating level
indicator "+4"
0
PRECISION 8i
1
OL
TRUE
48V
systems
Ø
4 5 6
OL illuminates (and holds) at + dBu which is 5 dB below actual over-
1
load. Depress RESET
These are provided to help optimize level setting when the PRECISI-
2
ON 8i is remotely located from the device to which it is connected. The
"PK" indicator activates (and holds) at the level selected on the PEAK
REFERENCE selector
 dB. The  indicator activates at peak level minus  dB. Generally, the
PEAK REFERENCE selector is set for the maximum level you want to
present
to your mixing console, recorder, etc. Depress RESET 10 to clear PK.
NOTE: Only the OL light indicates impending preamp overload. The red
PK light simply indicates that the signal has exceeded the level selected
on the PEAK REFERENCE switch.
Note that the overload level of the PRECISION 8i is +1 dBu at the
output. This level exceeds the input capability of some devices (check
manufacturer's specifications). In other words, it may be possible to
cause overload distortion in the connected device even though the
PRECISION 8i level indicator does not show a red light. We can provide
accessory Output Attenuators in applications where this is necessary.
Please consult the factory for assistance.
This control adjusts the preamp gain over the range of 1 dB to 4 dB.
3
4 Phantom power (+48 V) is activated when the 48 V button is depressed.
Avoid selecting phantom power if you are using a ribbon microphone.
While not required, it is advisable to deselect 48 V when using a dynam-
ic microphone or a DI input.
Output signal polarity is reversed when the button is depressed.
5
The SIG indicator activates at approximately 4 dBu.
6
7 Operating level indicator. The +4 indicator activates when the output
level reaches +4 dBu normal operating level. When the PEAK REFER-
ENCE selector 9 is set to the 10 dBV position, the operating level indica-
tor activates at 10 dBV output level.
TRUE systems
2 3
35
PK OL PK
30 40 30
-3 -3
45
-6 -6
50
48V
55
+4 +4
16 64
Ø
1 ON
SIG
MID
7 8
to clear OL.
10
. The  indicator activates at peak level minus
11
35 35
OL PK
40 30
-3
45
-6
50
48V
55
+4
16 64 16
Ø
2
SIG
SIDE
3