5.3
Display Panels
dimtel
dimtel
RMS
Overall RMS of the data.
AMP P-P
Peak-to-peak amplitude of the gap transient.
MAX RMS
Largest RMS around the turn.
MARKER RANGE
Lower and upper bounds of a frequency search range
in kHz. Within this frequency range the IOC code searches the aver-
aged spectrum and based on the search type finds maximum (peak) or
minimum (notch) value and frequency.
MIN/MAX
Spectrum search type: minimum or maximum.
Maximum
search is used for tracking positive peaks, e.g. in driven tune monitor-
ing or in open loop. When the feedback loop is closed a notch typically
forms in the spectrum at the tune frequency. Minimum search can then
be used to provide parasitic non-invasive tune readout.
AVG
Spectrum averaging constant. Value roughly corresponds to averaging
time constant expressed in spectrum updates. For example, setting this
field to 10 produces exponential time constant of 10 seconds at 1 Hz
update rate. Value of 1 disables averaging.
MARKER
Marker amplitude in dB.
FREQ
Marker frequency in kHz.
5.3.8
Environmental Monitoring Panel
The environmental monitoring panel shown in Figure 12 provides instanta-
neous readouts and five minute histories of three supply voltages and five
temperatures in the iGp-5120F system. It also monitors IOC CPU temper-
ature and two cooling fan speeds: one mounted on the IOC CPU and the
main chassis fan.
NOTE:
The user must check the device temperatures after the unit is in-
stalled in the final location to make sure sufficient airflow reaches the internal
devices.
NOTE:
Check device temperatures periodically and compare to measure-
ments made during installation. Elevated temperatures can indicate blocked
air intake filter!
28 of 58
