A-M Systems 1700 Manual - Página 8

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General Notes

Any amplifier channel not currently in use should have its

position to protect the amplifier inputs. This grounds the inputs to the differential

amplifier circuitry.

Set the

GAIN

LOW CUT-OFF

frequency content of the signal to be recorded.

While recording from biological preparations take care to keep all instrument cables as

far away as possible from the recording situation. This will assist in maintaining proper

grounding and shielding to insure a minimum of electrical interference.

Input cables are available to connect the amplifier to extracellular electrodes and/or

stimulators. These cables will attach to either the

Additional cables can be ordered (catalog #692000, #701700). One end of each cable

is left open to allow for maximum flexibility. The pin assignments for the connectors

and the cables are as follows:

NOTE: Pin H can be configured to be as a ground, rather than a driven shield. A

driven shield is used with the

the cable, thus increasing common mode rejection. The shield is driven by a low

impedance source with a differential signal voltage from the amplifier. This driven

shield (the silver braid) should not be connected to ground, as this will cause

noise in the input signal. Instructions on how to convert pin H to a ground or shield

are detailed on the next page. Each channel can be configured independently.

The

connector shield is connected to the system ground internally. Therefore,

STIMULUS

any ground-referenced or isolated stimulator can be used with the

A-M Systems

Operating Instructions

filter,

HIGH CUT-OFF

Wire

Black

White

Shield

connector to minimize the effect of capacitance on

INPUT

131 Business Park Loop, P.O. Box 850 Carlsborg, WA 98324

Telephone: 800-426-1306 * 360-683-8300 * FAX: 360-683-3525

E-mail: [email protected] * Website:

switch in the

MODE

filter, and

filter according to the

NOTCH

or the

INPUT

STIMULUS

INPUT

Signal +

Signal -

Driven Shield*

not used

STIMULUS

http://www.a-msystems.com

STIM

connector.

STIMULUS

Ground

not used

connector.