G.R.A.S. 12AQ, Инструкция по эксплуатации

Страница: 15 / 22

G.R.A.S. SOUND & VIBRATION
Power Module Type 12AQ
Page 15
Gain
The gain can be set to any of ten values from –20 dB to 70 dB in steps of 10 dB.
Command Effect
gain -20
Set gain of conditioning amplifier to –20 dB
gain -10
–
ײ
– –
ײ
– –
ײ
– –10 dB
gain 0
–
ײ
– –
ײ
– –
ײ
– 0 dB
gain 10
–
ײ
– –
ײ
– –
ײ
– 10 dB
gain 20
–
ײ
– –
ײ
– –
ײ
– 20 dB
gain 30
–
ײ
– –
ײ
– –
ײ
– 30 dB
gain 40
–
ײ
– –
ײ
– –
ײ
– 40 dB
gain 50
–
ײ
– –
ײ
– –
ײ
– 50 dB
gain 60
–
ײ
– –
ײ
– –
ײ
– 60 dB
gain 70
–
ײ
– –
ײ
– –
ײ
– 70 dB
The LEDs on the front panel will automatically respond to the selected value.
Output signal floating/non-floating
To select whether the output of the conditioning amplifier (via its BNC
Output
socket on the rear
panel) is to be floating or non-floating.
Command Effect
float y
Set the output of the conditioning amplifier to floating.
float n
Set the output of the conditioning amplifier to non-floating.
The LEDs on the front panel will automatically respond to the selected setting.
CCP input
Switches attention to signal(s) entering via the CCP Input socket(s) on the rear panel.
Command Effect
ccp
Incoming signal(s) expected via CCP Input socket(s) on the rear panel.
The LEDs on the front panel will automatically respond to the selected setting.
Microphone input
Switches attention to signal(s) entering via the Mic . Input socket(s) on the rear panel.
Command Effect
mic Incoming signal(s) expected via Mic . Input socket(s) on the rear panel.
The LEDs on the front panel will automatically respond to the selected setting.
Polarization voltage 200 V / 0 V
Applies to the Mic Input sockets (7-pin LEMO) on the rear panel. The polarization voltage is
applied to pin 3 (Fig. 2.3).
Command Effect
pol 200v Set polarization voltage to 200 V.
pol 0v Set polarization voltage to 0 V.
The LEDs on the front panel will automatically respond to the selected setting.
Preamplifier voltage ± 15 V / ± 60 V
Applies to both Mic Input sockets (7-pin LEMO) on the rear panel. The preamplifier voltage is
applied across pins 6 and 7 (Fig. 2.3).
Command Effect
pre 15v
Set preamplifier voltage to ±15 V.
pre 60v
Set preamplifier voltage to ±60 V.
The LED on the front panel will automatically respond to the selected setting.