RMUX16

RMUX16 is a plug-and-play card for an extension slot of the IM7/x. It allows to connect up to 16 electrochemical cells to the electrochemical workstation simultaneously. For measurement, a user-defined number of cells are measured (multiplexed) sequentially. Plugged into an empty extension slot it will be recognized automatically by the instrument.

The counter electrode and the reference electrode outlets of the internal IM7/x potentiostat are switched to the active cell only. The working electrode and the test electrode are connected internally and have a common outlet. The inactive cells are open circuit.

The IM7/x can control up to eight RMUX16 addon cards with up to 128 multiplexed channels.

Packing List

• RMUX16 extension card

Note

The cell cable set RMUX16 CS is required for the measurement with the RMUX16 add-on card. This set includes the potentiostat connection cable (Lemosa plug to ODU plugs Probe E/I) and the 16-channel cell connection cable (D-SUB to 4mm banana plugs) with 16x CE, 16x Ref, 16x WE.

The type of electrochemical workstation (or serial number) must be specified when ordering.

Installation

If the RMUX16 card is purchased together with a basic device, it is already installed in the IM7/x system. Upgrading an IM7/x with RMUX16 cards is very easy, as the cards only need to be inserted into the expansion slots provided. See IM7 Chapter for further information.

Note

The RMUX16 plug-in card requires an expansion slot with a width of 4TE (corresponds to approx. 20mm). When upgrading, a new, smaller cover panel may be required for the remaining slots. This can be ordered as an accessory.

Specifications

Table 34 RMUX16 Addon Card

Channels	16 (with common working electrode)
Input Impedance	100 GΩ, 30 pF
Maximum Current	±500 mA (per channel)
Connector	44-pin D-Sub
Max. RMUX16 Cards Supported	4 (IM7) for up to 64 channels 8 (IM7/x) for up to 128 channels

Configuration

Caution

Before connecting either the RMUX16 to the IM7/x or the cells to the RMUX16, switch off the potentiostat!

The RMUX16 functions are controlled through the internal system bus, whereas the connections of the analog signals have to be set up externally. For that purpose a Y-adapter cable is required (included in RMUX16 cable set). The one-tailed-end connector is to be plugged into the RMUX16 outlet, the two-tailed-end plugs go to the probe-I and probe-E plugs of the IM7/x. The connectors do only fit to their corresponding outlet and therefore cannot be mixed up.

The pin assignment of the Lemosa (ERA0S.304.CLL) outlet on the RMUX16 front panel is as follows:

Table 35 RMUX16 Potentiostat Connector

Pin	Signal
1 | CE counter electrode
2 | WE working electrode (common)
3 | RE reference electrode
4 | WEs working electrode sense (common)

Cell Connection

The optional RMUX16 cable set (RMUX16 CS) comes with a multi-lead cell cable which is connected to the 44-pin D-Sub outlet of the RMUX16.

The multi-tail cable provides three leads for each of 16 cells. The color coding is as follows:

• Black - WE working electrode (common signal)

• Green - RE reference electrode

• Red - CE counter electrode

The lead-triplets are labelled with the corresponding channel number. For the connection of the cells, please only use the factory-made cable.

Note

The complete pinout of the D-SUB port is shown below. The image shows the pinout with a view of the socket from the front.

Table 36 RMUX16 HD-DSUB-44 Pinout

Pin	Signal	Information
1	CE1	counter electrode channel #1
2	CE2	counter electrode channel #2
3	CE3	counter electrode channel #3
4	CE4	counter electrode channel #4
5	CE5	counter electrode channel #5
6	CE6	counter electrode channel #6
7	CE7	counter electrode channel #7
8	CE8	counter electrode channel #8
9	CE9	counter electrode channel #9
10	CE10	counter electrode channel #10
11	CE11	counter electrode channel #11
12	CE12	counter electrode channel #12
13	CE13	counter electrode channel #13
14	CE14	counter electrode channel #14
15	CE15	counter electrode channel #15
16-27	WE	working electrode (common)
28	RE13	reference electrode channel #13
29	RE14	reference electrode channel #14
30	CE16	counter electrode channel #16
31	RE1	reference electrode channel #1
32	RE2	reference electrode channel #2
33	RE3	reference electrode channel #3
34	RE4	reference electrode channel #4
35	RE5	reference electrode channel #5
36	RE6	reference electrode channel #6
37	RE7	reference electrode channel #7
38	RE8	reference electrode channel #8
39	RE9	reference electrode channel #9
40	RE10	reference electrode channel #10
41	RE11	reference electrode channel #11
42	RE12	reference electrode channel #12
43	RE16	reference electrode channel #16
44	RE15	reference electrode channel #15

Front Panel Display

The RMUX16 card provides a two-digit seven-segment front panel display and shows the currently selected RMUX16 channel. If the measurement device is set to MAIN device, than the RMUX16 display is deactivated.