natus Grass S88X, User & Service Manual

Page: 45 / 64

S88X
Dual Output Square Pulse Stimulator
7-45
p
OSt
S1 t
rain
(pt)
This mode provides a Train from S1 followed by a single pulse from S2
(post train). The Delay from the end of the Train to the onset of the post
train pulse can be set using the
S2 DELAY . The post train S2 pulse duration is
set by the S2 DURATION
.
The following example lists the settings required to deliver a single S1
train of 5 monophasic, 1 millisecond pulses in 500 milliseconds duration,
followed by a 3 second delay, then a single 2 second duration monophasic
S2 pulse.
1. Select
S1 FUNCTION , then FUNCTION = SINGLE TRAIN (ST).
2. Select S1 PULSES
,
then MONOPHASIC
.
3. Select TRAIN DURATION , then enter 00.500 seconds.
4. Select TIMING RATE , then enter 0010.00 PPS.
5. Select TIMING DELAY , then enter 00.00005 seconds.
6. Select TIMING DURATION , then enter 00.00100 seconds.
7. Select S2 FUNCTION , then FUNCTION = POST S1 TRAIN (PT).
8. Select S2 PULSES
,
then MONOPHASIC
.
9. Select TIMING DELAY , then enter 03.0000 seconds.
10. Select S2 DURATION
,
and enter 02.00000 seconds.
11. Set the S1 and S2 OUTPUT AMPLITUDE to the desired voltage values.
12. Depress both the S1 and S2 OUTPUT ON/OFF to on .
13. Depress the S1 SINGLE touch-pad control to initiate the stimulus.
S
ync
t
rain tO
S1 (St)
Generating a train of pulses from S2 triggered from S1 is possible with the
S2 Function in the Sync Train to S1 mode. Each S1 pulse produces a train
from S2. If delay is required between the S1 pulse and the S2 Train, the S2
Train Delay can be used.
The following example lists the settings required to deliver a single S1
monophasic pulse of 5 milliseconds duration followed by a 2 second delay,
then an S2 train of 25 monophasic pulses each having a duration of
2 milliseconds.
1. Depress
SETUP , then select TRAIN PARAMETERS FUNCTIONS
,
then ENTER/
ACCEPT
.
2. Depress S2 TRAIN DELAY
,
then enter 02.000 seconds and
ENTER/ACCEPT
.
3. Depress S1 FUNCTION , then FUNCTION = SINGLE PULSE (SP).