Recording Waveforms Using the
Harvard Modular Universal Oscillograph
Numbers in brackets, e.g. (1), (2) etc. refer to Fig. 1 on page 3.
Letters in brackets, e.g. [A], [B] etc. refer to Fig. 5 on page 9 and
Fig. 12 in the Modular Universal Oscillograph Instruction Manual.
1)
Have you read the complete Operating Procedure section?
2)
Check that the Isolated Preamplifier is fitted with batteries
(see page 12).
3)
Refer to Fig. 2, 3 or 4 on pages 5, 6 and 7 to apply the elec-
trodes to your subject.
4)
Connect the electrodes to the Isolated Preamplifier using
either the 3-lead input cable or the ECG limb cable.
5)
With reference to the Harvard Modular Universal Oscillograph
Instruction manual section 3.4.0, follow steps 1 to 13 inclu-
sive.
6)
Plug the Isolated Preamplifier to the Isolator Interface.
7)
Switch the Isolator Interface on and check that the battery
indicator (1) on the Preamplifier is in the green zone. If it is
not, refer to page 12.
8)
Set the Preamplifier’s AC/DC switch (5) to the DC position
and set the filter switch to 15 kHz.
9)
Set the Preamplifier's GAIN switch (6) to 10 and select posi-
tion I on switch (2).
10)
Set the Oscillograph's Direct-OFF-Interface switch [AC] to
INTERFACE, the AC/DC switch [AA] to DC, the chart speed
control [T] to 2.5, and start chart drive by pushing chart drive
lever [M] to ON.
11)
Adjust the Oscillograph’s GAIN control [W] to about 1. The
pen will move on the chart.
12)
Adjust the Preamplifier’s DC LEVEL control (3) until the pen
returns to its central position on the chart. At this point you
should see a small waveform on the chart.
8
Содержание 50-9513
Страница 8: ...7 AVL I AVR II III AVF V1 V2 V4 V5 V6 V3...
