USER’S MANUAL. PROMAX-10
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The COUNTER field shows the number of impulses that have exceeded the
level defined by the REF. LINE parameter in the configuration menu of the SPECT
mode (section 4.2.5.5).
To initialize the TIME and COUNTER fields, press the SPECT [13] key.
In the lower part of the screen it appears a bar that shows present level, a
dotted line shows the detection threshold (REF. LINE) whereas the continuous line
indicates the maximum detected level.
4.2.4.5
SPECTRUM ANALYSER mode configuration
Pressing the CONFIG key [14] will
access the parameter configuration menu
for the SPECTRUM function.
To change the value assigned to one
parameter, turn the rotary selector [9] until its field is
activated (this will appear shadowed) and then
press. The value of the parameter will be
activated and may be changed by turning the rotary selector. When the value you want
appears, press the rotary selector [9] to validate it.
The parameters that can be modified through this menu are:
a) BAND
It selects the analyzed band between:
RETURN PATH Sub-band spectrum (5 to 100 MHz).
FORWARD
Band from 45 to 862 MHz.
b) MODE
It selects the representation mode:
SPECT
Instantaneous value.
MIN
Minimum values held (MIN INGRESS).
MAX
Maximum values held (MAX INGRESS).
TRANS
Transient detector. Only operative in the return path.
c) DETECTOR (Only for the SPECT, MAX and MIN modes)
It selects the used detector between:
PEAK
AVERAGE
In the TRANS mode the detector used is always PEAK.
d) REF. LINE
It permits to activate / deactivate and to define the reference line level in 1 dB
steps from 20 to 120 dBµV (dBµV units). This line appears on the spectrum
representation and also it is the threshold value for the impulses detection in the
TRANSIENT mode (only if its value is under 60 dBµV).
e) STOP. FREQ
It defines the maximum frequency for the transient detection.
Figure 36.- SPECT mode configuration.
