2
2
SPECIFICATION OF THE
SPECIFICATION OF THE
AFT400B
AFT400B
2.1 G
ENERAL
P
ARAMETERS
Gain
x1, x10, x100 or x1000
Filter Bandwidth (-3 dB)
100 Hz, 1 kHz, 10 kHz, 100 kHz or 1 MHz
Switched Manual Output Offset
10-turn Potentiometer
-10 V .. +10 V referred to output
Input Modes
+In, -In and (+In ‒ -In)
Input Coupling
DC or AC with f
-3dB
= 1.2 Hz
Input referred Noise (Gain x1000)
< 1 nV
rms
/√(Hz) for f>100 Hz
Positive and negative Overload LEDs
Remote Control Interface (optional)
Optical Fibre
Resistor coded Gain Output (optional)
Power Supply Requirement
DC 12 V, > 400 mA
Power Supply Input
C14 connector, 100 V ... 240 V / 47..63 Hz
Weight
450 g
Housing Size
20 cm (L) x 10.5 cm (W) x 5 cm (H)
2.2 S
IGNAL
I
NPUT
Connector
Isolated BNC
Input GND to Output GND
100 Ohm
Common Mode Input Range (DC coupled)
-10 V ... +10 V
Input Resistance (DC coupled)
1 M
Input Capacitance Gain x1 & x10 for f<100 kHz
39 pF -30/+0%
Damage Threshold
DC coupled, Gain x1, x10 & x100
±
12 V
DC coupled, Gain x1000
±
10 V
AC coupled, all Gains
10
V peak
, for sine signal: 7 V
rms
Voltage Rating of Input Capacitor
250 V
For safety reasons never operate above
40 V
Internal thermal Fuse for Gains x1, x10 and x100 63 mA
No Fuse !
for Gain
x1000
Swift AC Coupling Feature
DC to AC switching results in fast signal
equalizing to zero
2.3 F
ILTER
AND
G
AIN
Filter 100 Hz, 1 kHz, 10 kHz, 100 kHz
2
nd
Order
f
-3db
(for 100 mV at output)
±
10%
Full Bandwidth in Gains x1 & x10
1 MHz
Full Bandwidth in Gains x100 & x1000
Limited by Circuit Design to 600 kHz
Amplitude Accuracy
@10 Hz all Gains, all Filter
< 1 %
Harmonic Distortion @ 0.2 V
RMS
, 1 kHz
< 10 µV (3
th
harmonic)
Manual AFT400B – Rev. 1.02 dated 30/09/20 Page 4 (10)
