PRODUCT SHEET
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BIOPAC Hardware |
STIMULATORS MP3X
| Page 3 - 9
Updated: 9.12.2019
As shown in the following diagram, the indicator mark is between the two dials.
Close-up of “Level” adjustment knob
Stimulus output
Stimulus pulse output for connection to external electrodes or other devices. This is a
standard BNC style connector.
Pulse indicator
LED flashes when the stimulus pulse is active: BSLSTMA/B = red. BSLSTM = green.
Power indicator
Activated when the DC adapter is plugged in and the power switch on the back panel is
turned ON.
BSLSTMA/B: The LCD display is activated.
BSLSTM: LED indicator lights green
BACK PANEL TERMINOLOGY
Power switch
Rocker switch for turning the BSLSTM power ON and OFF.
Fuse holder
If the fuse blows and must be replaced, use a screwdriver to open (counterclockwise) and
close (clockwise) the fuse cap.
DC Input
Socket for BIOPAC DC adapter.
Trigger cable
Connects to the Analog Out connector on the back of the MP3X acquisition unit. The
MP3X sends the Pulse width and Pulse rate information via this cable.
Manual Test
button
Used to diagnose problems with the BSLSTM stimulator unit.
When the
Trigger
and
Reference
Output
cables are
disconnected
from
the MP3X , the
Manual Test
button can be used to initiate a stimulus with
a fixed pulse width of 2.5 milliseconds.
Reference Output
Cable
The stimulus marker output is labeled
Reference Output
on the back panel of the
BSLSTM. This output cable connects to any of the four channel inputs (CH1, CH 2, CH
3, or CH 4) on the front of the MP3X acquisition unit. The output cable carries the
stimulator marker pulse to the MP3X. The marker pulse has a fixed pulse width 15 ms
and is generated each time the stimulator generates a pulse.
•
BSLSTMA/B: Use the front panel Reference switch to select Actual or Fixed.
•
BSLSTM has a fixed pulse width of 15 ms, selected so that the MP30 can capture
the pulse with a sample rate as low as 100 samples per second.
If the BSL
PRO
software has been setup correctly, the amplitude of this marker will
reflect the
Level
knob setting on the BSLSTM. See the
Range switch
section for
information on how this reading can be affected.
