iHn High Voltage Interface
The iH16 and iH8 modules feature 16 or eight bidirectional interface ports to directly control high-voltage (e.g. 28 V signal) cage elements including Med Associates, Lafayette, and Coulbourn. The iH8 and iH16 modules connect to an iHm, iH8-RJ25PLA/B, or iH8-RJ25A/B manifold via a DB15 cable. The manifold can be placed closer to the behavioral apparatus.
- Each interface port is configurable in Synapse as either inputs or outputs
- Manual trigger buttons on the front panel are used for testing / debugging connected behavioral components
- Status lights make it easy to monitor component activity during sessions
The 'O' LED lights when the port is driven by Synapse, and the 'I' LED lights when the port is driven by Synapse, by an external device, or by the manual button press.
An output port can source up to 1 A maximum. The maximum total output per iHn module is 1 A. The maximum total output per iCon is 3 A.
A previous 10 channel model (iH10) has Molex connectors directly on the face of the device.
For information on software control of the iHn modules, see the Synapse Manual.
Manifolds
The iHn comes with one or two manifolds, which interface with cage elements closer to the subject. They connect to the iHn via provided DB15 cables. There are two types of manifolds: the iHm Manifold has eight 3-pin Molex connectors and the iH8-RJ25A/B Manifolds and iH8-RJ25PLA/B Manifolds have eight 6-pin RJ25 connectors.
iHm Manifold
The iHM uses 1.57 mm diameter standard Molex pin and socket connectors.
iHm Manifold Molex Pinout
As an Input, the Signal line floats to +28 V. Short the Signal line to ground to trigger it. As an Output, the Signal line floats by default and is shorted to 0 V when triggered.
iH8-RJ25PLA/B Manifold
The iH8-RJ25PLA/B manifolds feature 8 telephone-style 6-pin RJ25 ports to provide direct control of high-voltage (e.g. 28V signal) cage elements from Panlab.
- There are a total of 8 inputs and outputs combined per manifold
- The ports are configurable in Synapse as either inputs or outputs
- Each port has one input and two outputs
The numbers on the faceplate indicate which input channels and output channels are available on that connector. The outputs that are shared between ports are physically shorted together inside the iH8-RJ25. For example, Out 2 on the iH8-RJ25PLA is available on the first two ports and is controlled by the same signal from Synapse.
Similarly, inputs and outputs of the same number are shorted internally. For example, Out1 and In1 share the same signal from the iHn and you can't use both at the same time.
The iH8-RJ25PLA and iH8-RJ25PLB models are electrically identical, but have different channel numbering on the faceplate to match the A and B inputs on the iH16 module.
Typical Configurations
iH8-RJ25PLA/B Manifold Pinout
Pinout looking into the connector
iH8-RJ25A/B Manifold
The iH8-RJ25A/B manifolds feature 8 telephone-style 6-pin RJ25 ports to provide direct control of high-voltage (e.g. 28V signal) cage elements from Coulbourn.
- There are a total of 8 inputs and outputs combined per manifold
- The ports are configurable in Synapse as either inputs or outputs
- Each port has one input and up to three outputs
The numbers on the faceplate indicate which input channels and output channels are available on that connector. The outputs that are shared between ports are physically shorted together inside the iH8-RJ25. For example, Out 6 on the iH8-RJ25A is available on the first two ports and is controlled by the same signal from Synapse.
Similarly, inputs and outputs of the same number are shorted internally. For example, Out1 and In1 share the same signal from the iHn and you can't use both at the same time.
The iH8-RJ25A and iH8-RJ25B models are electrically identical, but have different channel numbering on the faceplate to match the A and B inputs on the iH16 module.
Typical Configurations
iH8-RJ25A/B Manifold Pinout
Pinout looking into the connector
Note
* Not available on connector 4 or 8
** Not available on connector 3, 4, 7, or 8
iHMSG
The iHMSG cable interfaces a third-party behavioral control box with the iHm manifolds. It has a DB25 on one end to connect to the third-party system, and two DB15s on the other end to connect to iHm manifolds. The DB15s are labeled "A" and "B" for the upper and lower bits.
DB15 Pinout
If you are not using a TDT manifold and are instead connecting directly to the iH8/iH16 DB15 port, here is the pinout:
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| iHn A pinout, looking into the connector |
All Ground pins are shorted together. All Vcc pins are shorted together.
The B connector on the iH16 is identically wired, except Pins 1-8 are I/O 9-16.