Magnet-physik EF 14 - Pole Clamps on the Rear Panel; RS 232 Interface

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
50
Important!
A connection between pin 4 and pin 11 tells the EF 14 that a measuring coil
is attached to the input socket on the front panel.
7.1.2 Pole Clamps on the Rear Panel
Table 7.1.2.1: Assignments of the pole clamps
Color Function
red
Measuring input +
black
Measuring input
-
The pole clamps can be used to connect measuring coils with bunch or banana plugs or to
clamp the coil wire directly.
7.2 RS 232 Interface
Table 7.2.1: Assignments of the 9-pole Sub-D plug on the rear panel
Pin Function Signal direction
2
RxD, received data
input
3
TxD, transmit data
output
4
DTR, data terminal ready
output
5
Digital ground
The RS 232 interface can be fully operated by connecting only the following 3 wires: TxD,
RxD and digital ground. TxD of the EF 14 must be connected to the RxD pin on the computer
side. RxD of the EF 14 must be connected to the TxD pin on the computer side. A null-modem
cable can be used.
The DTR pin is not actively controlled. It goes to high potential as soon as the EF 14 is
switched on. CTS/RTS handshake is currently not supported.