Specifications

Operating Manual SEFRAM 4451
M4451 A00
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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.