SEFRAM 4451 Specifications download pdf (Page 31)

Operating Manual SEFRAM 4451

M4451 A00

When the pulse generator finishes the diagnostic self-test routine, it enters the local state (LOGS) and

assumes power-on default settings if the POWER-ON setting is at 0. You can program the pulse generator for

any settings you want at power on, as described earlier in this section.

The factory default settings are:

Power-on Default Settings

Key Function Comments

PERIOD 500 ns Pulse period

WIDTH 200 ns Pulse width

DELAY 0 ns Pulse delay from Sync out

DPDELAY 5 us Delay between pulses in double pulse mode

HILVL 2.5 V Pulse high level

LOLVL -2.5 V Pulse low level

MODE CONT Pulse mode

N-BURST 2 Waves per burst

SLOPE POS Positive external trigger slope

TLVL 1 V External trigger level

TRIG SOURCE MAN Trigger source

INT TRG RATE 1 ms Internal trigger rate

OUTPUT OFF Output disabled

PULSE MODE Normal Normal single pulse output

MODULATION OFF Modulation execution

RISE 5 ns Pulse rise time

FALL 5 ns Pulse fall time

3.11 Displaying Errors

At power-on, the pulse generator performs a diagnostic routine to check itself for problems. If the diagnostic

routine finds an error, an error message is displayed. The pulse generator also displays error messages when

front-panel settings are either invalid or may produce unexpected results.

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SEFRAM 4451 Specifications Page 31