Instruction manual

8 World Precision Instruments
suitable substitute that is rigid and of adequate size. Wrap the instrument in paper
or plastic surrounded with at least 100mm (four inches) of shock absorbing material.
For further details, please read the section entitled “Claims and Returns” on page 15 of
this manual.
Instrument Description
Noise and Interference
Electrical noise and interference originating from the current and voltage in the
power mains and room lighting power is a primary source of concern for low
level bioelectric recording. Every high amplification preamplifier is subject to this
handicap, particularly when using microelectrodes. We recommend that all input
leads be shielded and the preparation connected to earth (ground). Often, it will be
necessary to enclose the preparation and electrode lead wires in a Faraday cage
or shield to reduce mains induction to sufficiently low levels. It may be beneficial
to extinguish overhead fluorescent lighting, as well. Use of the optional headstage
preamplifier can vastly improve frequency response and reduce noise pickup when high-
impedance electrodes are used!
Input Connection
The input connector of the Iso-DAM8A module is a 8-pin DIN connector. The pin
designations are shown in Fig. 2 and the function of each pin is shown in the
following table.
Fig. 2—Iso-DAM8A input connections are labeled.
PIN FUNCTION
1 Output from remote headstage.
2** Isolated Ground
3 Reference Connection (See instructions)
4 Direct Input (+)
5 Direct Input (–)
6* Headstage Power (+10VDC)
7* Headstage Power (–10VDC)
8 No connection
*Reserved for headstage use only. Do not use to power other devices.
**Must be used to reference + input and – input.