PTE-300-V
Sheet 31
5. Press the key
Set
, the LED indicator 5, (2
nd
ramp), will light up and the display will change the
units to Hz/s. Selection is made by the rotating knob and it defines the slope of the 2
nd
ramp.
This selection is from 0.01 Hz/s up to 10 Hz/s. If 0 is selected indicates that there is no slope
and the change produced is instantaneous, when ordered.
6. In case of the 2
nd
ramp, the initial value is the same as the final of the first ramp, and the final
value will be the initial value of the 1
st
ramp.
7. Press the key
Set
, the LED indicator 6, (value to start the timer), will light up and the display
will change its units to Hz. Selection is made by the rotating knob, and the value is in Hz. When
the ramp passes for this value will send a signal pulse to
Start Chrono
. The values selected
can be from 40 to 300 Hz.
8. Press the key
Set
, the LED indicator 1 (initial value to start the ramp) will light up and the
display will show the frequency value previously selected.
The ramp is now defined and ready to start. If the operator wishes to change any parameters or
simply revise the settings made, the cycle may be repeated always stopping at the LED indicator 1. If
any other of the LEDs is lit or it is in any other position, the ramp will not start.
4.1.4. DYNAMIC TEST: SELECTED RAMP START
To start the selected ramp, the
Ramp
key should be pressed once and the ramp will follow the
procedure previously programmed. The LED indicators will begin to flash slowly indicating where the
ramp is at each stage.
Concerning the LED indicator 6 (start value of the timer), when the frequency value reaches the
selected value, this LED will light up for only 1 second, indicating that the signal has been sent to start
the timer.
4.1.5. DYNAMIC TEST: STEP TO 2
ND
VALUE
When only a step to a second value is desired without a ramp, a second value step can be achieved
by pressing
Ramp
key for 2 seconds. Repeating this process the step can be made to the first value.
4.1.6. TTL AUXILIARY OUTPUT: CHARASTERISTICS AND APPLICATIONS
The auxiliary output
Freq. Out
generates a square wave output signal TTL (5 V) that corresponds to
the frequency and phase value, of the voltage output (whether it is synchronized to Line, Freq, Ext or
Bus). This output allows to use the PTE-300-V as a highly accurate frequency reference for other
units (such as our COMPATEST 1000) and to synchronize the PTE-300-V outputs to any other
instrument like an oscilloscope, for example.
4.2.
LEVEL SECTION: OUTPUT POWER
This section describes the correct use of the PTE-300-V power outputs. The output can be selected in
voltage up to 300 V or in current up to 8 A. The power outputs can be synchronized to four available
references as it is explained in this section, as well. Because the three output channels are similar,
only one will be explained.
