[4]
AMP IN 50 Ω BUTTON
OFF: 50 Ω input is switched off
ON:
50 Ω input is switched on
[5]
AMP IN 100 KΩ BUTTON
OFF: 100 kΩ input is switched off
ON:
100 kΩ input is switched on
[6]
GROUND SOCKET
Connection to the protective conductor potential.
[7]
POWER SUPPLY HIGH / LOW BUTTON
Changing of the operating voltage
HIGH (LED on):
High operating voltage (ca. ± 90 V)
LOW (LED off):
Low operating voltage (ca. ± 45 V)
recommended for low-impedance loads
[8]
IN 100 KΩ
100 kΩ Signal input; isolated BNC socket
Reference potential is connected to protective earth via 1 MΩ.
[9]
IN 50 KΩ
50 Ω Signal input; isolated BNC socket
Reference potential is connected to protective earth via 1 MΩ.
[10] READY/PROTECTION LED
Green:
Lights up when the amplifier is ready for operation.
(READY)
Red:
Signals the intervention of a protection mechanism.
Red LED lights up constantly:
Over-temperature protection; the device switches on
automatically after the drop of the temperature.
Red LED flashes slowly (≈1/s):
Disconnection because of exceeding the permissible
power loss or output current.
Red LED flashes rapidly (≈3/s):
Hardware fault. The device must be sent to the
manufacturer
A1230-02
Operating Elements
Page 10
