ERP and behavioral use

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RB530

RB730

RB830

RB834

For ERP and behavioral testing applications

We offer a variety of manual response pads that are compatible with both SuperLab, Presentation and a variety of other commercial/freeware stimulus delivery software programs. These response boxes use a state of the art, low-power microcontroller to detect button presses, encode them, and send them to the serial port. Switch debouncing is performed by the microcontroller, guaranteeing that each button-press produces only one signal.

Here are some of the features of the RB Series response boxes:

USB interface	Compatible with Windows and Mac OS. Yes, it is even compatible with Linux though we cannot provide support to Linux users.
Replaceable key tops	Customize the response pads to any experiment (more below).
Built-in reaction time measurement	Get peace of mind with a hardware timer that guarantees 1 millisecond resolution. Your computer is now free to perform any task, however complex (e.g. playing a movie) while the response pad takes care of timing (more below).
Universal compatibility	The RB Series response pads are compatible with E-Prime, Presentation, SuperLab, and other programs.
No batteries or A/C adapter required	Take them anywhere, they work even on a battery-operated laptop.
Accessory Connector	You now have six general purpose TTL lines -- save on the cost of an I/O card (SuperLab 3.0 will be needed to take advantage of this feature).
Upgradeable firmware	Your response pad will never be obsolete. The firmware (the software inside the pad) can be upgraded via a simple download.

Customizable Key Tops

With the RB-x30 models, Cedrus introduces removable key tops on all models. The tops can be removed without any tool. Every model includes red, green, blue, yellow, and clear tops.

This feature gives you, the investigator, new ways to customize the response pad for your particular experiment. Examples include using all four colored tops in a Stroop experiment, or use the red and green tops to simplify instructions to participants, e.g. "press the green key if the two faces are the same or red if they are not".

You can even display your instructions, literally, on the response pad. Using your printer, you can print any text or graphic, on plain white or colored paper, and insert it under a clear top.

The top of every key on every RB model can be removed and replaced except for the round button on the RB-530.

Built-in Timing Facilities

The RB-x30 response pads are XID devices, or eXperimental Interface Devices. This technology was originally developed for the high end Lumina fMRI response pads but is now included in the RB Series pads as well.

Being an XID device means that your response pad can measure the participant's reaction in hardware and then report a time stamped response to the computer. This capability relieves the computer to provide computationally intensive trials such as movies without worrying about maintaining accurate timing.

XID devices provide timing and other facilities, e.g. a long-cycle timer that can be polled at anytime by the computer, test procedures for measuring transmission delays due to the computer's operating system, support for an Accessory Connector (see below), and so forth.

RB Series Accessory Connector: Features, In Plain English

The Accessory Connector on the back of the RB Series response pads provides up to six highly configurable I/O (input/output) lines that can be used to send a signal to an external device or to accept input from external sources.

Note: The features described below will require SuperLab 3.0 before you can take advantage of them.

The RB Series response pads sport an Accessory Connector that can be configured in many ways and entirely via software. It can function in one of two modes: Reflective or General Purpose.

When in Reflective Mode, the pins on the Accessory Connector reflect the status of the response pad's push buttons. The following options are offered:

Reflective Mode	When a Push Button is Pressed...
Continuous	...the corresponding pin on the Accessory Connector goes high and stays high until the push button is released.
Single Pulse Mode	...a single pulse is sent on the corresponding pin. The pulse's duration can be adjusted. This mode works well with many ERP systems.
Double Pulse Mode	...a pulse is sent on the corresponding pin; when the push button is released, a second pulse is sent.

Two additional features are available when in Reflective Mode:

A pin on the Accessory Connector provides an "OR" output. It goes high when any push button is pressed.
The logic of the output pins can be set to active high or active low.

When in General Purpose Mode:

The Accessory Connector can be used for general purpose input/output (I/O) operations.
Any I/O lines can be used for either input or output.
Lines selected for input can be pulled high or pulled low, entirely via software -- no exterior resistors needed.
For input lines, inputs are time stamped.

RB530 The RB-530 provides five keys and is ideally suited for experiments involving spatial orientation (as is the RB-834 model). The keys are large and feature removable key tops (except for the center round key). The following photo shows an RB-530 pad with the colored tops (included free) installed. The pad ships also with four clear key tops so you can insert any legend or color paper.

RB730 The RB-730 provides seven keys laid out in a straight line. The keys are slightly wider than the typical keyboard key and feature removable key tops. The following photo shows an RB-730 pad with the colored tops (included free) installed. The pad ships also with seven clear key tops so you can insert any legend or color paper.

RB830 The RB-730 provides seven keys laid out in a straight line. The keys are slightly wider than the typical keyboard key and feature removable key tops. The following photo shows an RB-730 pad with the colored tops (included free) installed. The pad ships also with seven clear key tops so you can insert any legend or color paper.

RB834 The RB-834 features the largest buttons of any response pad on the market. It is ideally suited for experiments involving spatial orientation (as is the RB-530 model) or where it would be helpful if the participants used large keys.

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