GE ApexPro TT, Technical Manual

Page: 154 / 192

7-16 ApexPro™ 2001989-351A
Checkout
NOTE
If the RF monitor has a Max Hold function, enable the max hold to help
detect the RF peak signal strength.
a. Turn on MARKER and place it on the peak of the signal.
b. Press Trace .
c. Press F1-TRACE MODE .
d. Select CLEAR/WRITE .
e. Press ENTER .
8. If the transmitter fails this test, it must be returned for service.
RF signal integrity
This test verifies the integrity of the transmitter’s RF signal.
1. Connect the transmitter to an ECG simulator. Position the transmitter
approximately 10 to 20 feet (6 meters) from an antenna.
2. Allow duplicate transmitters:
a. At the bottom of the CIC Pro center screen, select the Setup CIC button.
b. Select the Service Password tab.
c. Type the password mms_com and then select OK . A DOS command prompt
window is displayed.
d. Type setflags<space>-dup<space>on and press Enter on the keyboard to
allow duplicate transmitters.
NOTE
Once you select this option, you have a set time, generally 5 minutes, to
enter the duplicate TTX numbers. If that is not enough time, simply
select this option again and continue entering TTX numbers.
e. Admit the transmitter to multiple receivers.
3. Type setflags<space>-mark<space>all and press Enter . This function plots
many causes of dropout.
The colored diagnostic tic marks at the bottom of each window indicate the
reason for missing waveform data.
If the diagnostic tic marks are yellow on all receivers at the same time, then either
the transmitter or the antenna system (or both) may require service. Any color
other than yellow indicates a system problem unrelated to the transmitter. If this
is the case, please contact GE technical support.
4. On the admitted beds (transmitters), observe the simultaneous ECG waveforms
for signal integrity. There should be no ECG signal breakup (dropout) on any of
the waveforms.