RB-530 Series

RB 530

Quality, ergonomic, practical response pads from Cedrus.

  • Compatible with all major stimulus presentation packages including the ViSaGe system

  • Customisable key tops

  • Built in timing facilities

  • Accessory connector

Guide Price: £250

SKU: N1220

Customisable Key Tops

Response boxes in the RB series come with removable key tops on all models. The tops can be removed without any tool and include 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 the RB-530 model can be removed and replaced except for the central round button.

Built in Timing Facility

The RB-530 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, and so forth.

Accessory Connector


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.

The Accessory Connector 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:

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.

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.