FAQ Tech

Pin Out

ADU-08e and ADU-07e have the same connectors.

Coils MFS

MFS Side:

../../_images/coil_connector_small.jpg

Cable Side

../../_images/odu_h_big.jpg

Pin Out Magnetic

Plug 10 pole, ODU MiniSnap S22K0N-P10MJG0-700S rear view (to solder cups)
The picture below shows the front side of the socket (coil picture) or the rear side of the corresponding plug with the solder cups (so rear side of cable picture)

Connector:

../../_images/Pinning_of_H-Field_cable_plug_(rear_view_on_solder_cups).jpg

Socket

Signal

cat.

1

+12V

twisted with 9

2

-12V

twisted with 10

3

H-Chop

twisted with 4

4

Sensor GND

twisted with 3

5

Cal Signal+

twisted with 6

6

Cal Signal -

twisted with 5

7

Input + (signal out)

twisted with 8

8

Input - (signal return)

twisted with 7

9

I2C SDA

twisted with 1

10

I2C SCL

twisted with 2

case

case

screen

Case: screen

The ODU plugs do not connect the screen. The ODU shell does not provide an electrical contact to the corresponding socket.

The MFS pre-amplifier has a resistance of ~30 Ohm and our input on the ADU side for H ~20 kOhm. The cable we use has twisted pairs (“Input +”” x “Sensor GND” ?). “Input-” is connected to GND
Pin 3 toggles the chopper. You need 5 or 12V. Pull up the gate with 12V and pull down with GND.
pull up -> pull down == chopper off
pull up -> pull down -> pull up == chopper on (there is no need to hold the 12V to keep the chopper on)
Switching does not need extra requirements since there is almost no current flow while switching.

You can order a suitable cable plug from Metronix or directly from the manufacturer ODU in Germany (www.odu.de)

The part number of the plug is ODU Minisnap Series K S22KON-T10MJG0-7000
You may also need a strain relief streeve ODU (bend protection, green) part.no. 702.023.205.965.060

Connect to another Logger

The ADU-08e has a true differential input. We connect the Sensor GND (Pin4) of the ADU with the MFS-06e sensor GND (Pin4) by the sensor cable. The negative input of the ADU (Pin8) is connected to the output - (Pin8) of the magnetometer. The positive input+ of the ADU (Pin7) is connected to the positive output+ of the magnetometer (also here pin 7).

By this means we avoid ground loops and obtain a pseudo differential behavior.

The reason why you do not see a difference in having ground connected or not when switching the chopper signal is that we provide a 100kOhms pull-down resistor on the control input against sensor GND.

Hence, when switching the supply voltage to the control input you get exactly the relay switched to the correct position. The supply voltage is referred to sensor ground.

Assuming your data logger has a differential input I recommend to provide the same cabling as described above:

Magnetometer Pin 7 to positive input of your instrument
Magnetometer Pin 8 to the negative input of your instrument
Magnetometer Pin 4 to the Sensor GND of your instrument
Magnetometer Pin 3 to a switch which provides positive supply voltage to switch chopper on
The +12V and -12V supply voltage of the sensor must be referred to sensor GND of your instrument

The cable should be twisted pair type:

Sensor output +/- must be twisted. +/-12V and chopper and sensor GND can be twisted. If you use it CAL+/- must be twisted, too. If you do not use it do not connect it at all.

Electric

Plug 6-pole, ODU MiniSnap S22K0N-T06MPH0-400S rear view (to solder cups)

../../_images/Pinning_of_E-Field_Plug-rear_view_(to_solder_cups).jpg

Socket

Signal

1

+12V

2

-12V

3

Sensor GND

4

Sensor GND

5

n.c.

6

Input (+ or - )

For standard E-field cables it is only required to connect pin no. 6

Wiring list of magnetometer cable MFS-06e/07e to ADU-07e/08e

left: Target ODU MiniSnap Series K 10 pole
right: Origin ODU MiniSnap Series K 10 pole

Battery Connector ADU-08

The connector is ODU S22K0C-P02MTS0-650S (plug) part no. S22K0C-P02MTS0-650S ODU streeve (bend protection, blue) part.no. 702.023.206.965.040

../../_images/battery_connector.jpg

With a standard laptop charger (as shown above) 12, 4A, the ADU can be operated in the laboratory easily.

Multi Purpose

Pinout and signals of multi purpose cable plug of ADU-07e

Connector:

../../_images/Pinning_of_Multi-Purpose_cable_plug_(rear_view_on_solder_cups).jpg

Plug ODU MinSnap 30 pole S23KOC-T30MFG0-7000

Signal

1

+12V

2

-12V

3

Sensor GND

4

Sensor GND

5

Input A +

6

Input A -

7

Input B +

8

Input B -

9

Input C +

10

Input C -

11

Input D +

12

Input D -

13

Input E+

14

Input E -

15

Cal Signal +

16

Cal Signal -

17

n.c.

18

HCHOP CH7

19

HCHOP CH8

20

HCHOP CH9

21

I2C_SDA5

22

I2C_SCL5

23

I2C_SDA6

24

I2C_SCL6

25

I2C_SDA7

26

I2C_SCL7

27

I2C_SDA8

28

I2C_SCL8

29

I2C_SDA9

30

I2C_SCL9

Please download Pinout and order numbers of ADU-07e connectors.pdf

GFZ SJT Connector

socket

signal

cat.

1

+12V

\ twisted

2

-12V

/

3

4

Sensor HCHOP

\ twisted

5

Input GND

/

6

7

+CAL

\ twisted

8

-CAL

/

9

10

Signal out

\ twisted

11

Signal return

/

12

13

GFZ SJT Connector 2019 (proposal)

socket

signal

1

+12V

twisted with 12

2

-12V

twisted with 13

3

4

Sensor HCHOP

\ twisted

5

Input GND

/

6

7

+CAL

\ twisted

8

-CAL

/

9

10

Signal out

\ twisted

11

Signal return

/

12

I2C SDA

twisted with 1

13

I2C SCL

twisted with 2

../../_images/SJT_GFZ.png

Rear view.

Precision of Current Measurement TXM TXB

The LEM modules measure the transmitted currents with tolerance < 1% (±0.9% @T=25°C)
The LEM modules are operated at ±12V DC stabilized (input resistance Rm 50 Ohm). Please download 1639877.pdf

USB WiFi Dongle

The ADU-07e and ADU-08e need a WiFi dongle in order to use the WiFi.
The dongle can be connected to any USB port; the inside port or the outside port with extra cable in order to get it out of your box.

Not any dongle works.
Take the LogiLink WL0086B. Amazon ASIN B00AAWKZRQ or EAN: 4052792005202
With some luck: LogiLink direct

SD Cards

Following SD cards should work:

Transcend 32 & 64 GB

Samung 256 GB … to be tested, may has a problem!

please also take a look here

GPS Antenna

We use “Planar Navigations Antenna N60XAD_WP High Gain”, model N60XAD_0300_XX_03_WP

Frequency Range 1575.42 MHz
VSWR* 1.5 typically
Peak Gain* 25 dBi typically
Power Supply 3V to 5V; 25mA typically

www.reel-gmbh

GPS module

HS Commodity Code 90159000
The module does not need an extra license when ordered for ADU-07e/08e spare part (as at May 2020)

Bluetooth & WiFi

Bluetooth & WiFi transmit above 2 GHz (or 5 GHz).
In general the sensors don’t see that.

Howerver when the transmission is pulsed (like the old mobile phones did) you can get significant distorions.
Mostly the DC/DC converters (power stabilized 12V adapter) can cause trouble.
This is mostly also the noise source of solar panels.
There is nothing to do but testing.