BNC 130 - Manual (Page 15)

15
OPERATING INFORMATION cont’d
{MODE} The Mode menu for the 106C/155/130 has all four selections available: Pulse,
Impulse,
CW and External Modulation.
Pulse Mode can operate over the entire timing range of the 6040, producing flat-
topped delayed pulses. The Delay interval, Peak level. Baseline level and pulse
Width are all adjustable.
External Drive operation is available in this Mode, allowing the module to be
digitally modulated at rates from zero to 300 MHz (for nonzero Baseline levels) or
200 MHz (for zero Baseline level).
Impulse Mode produces pulses of fixed 400 ps width with fixed 30 u¥ baseline and
1 mW peak levels (typical).
CW Mode provides continuous wave optical output.
External Modulation Mode allows a user-provided analog or digital signal to be
linearly converted to its optical equivalent. Inputs ranging from 100 Hz to 700 MHz
are converted with 200 mV rms/mW sensitivity (typical).
{TRIG}
The Trigger source and parameter menu, which operates in the Pulse and Impulse
Modes, has all five menu items: Single/Double Cycle, Internal Trigger (and Rate),
External Trigger (and Threshold), External Trigger Slope, and External Drive (and
Threshold).
Internal Trigger Rate and External Trigger Threshold are adjustable over the
6040's entire range.
External Drive is valid only in Pulse Mode (and has no effect in Impulse Mode).
The External Drive Threshold for the discriminator on the EXT DR input to the
module is adjustable from -2.3 V to +2.3 V with 10 mV resolution.
{TIMING}
This module places no constraints on timing settings selected with the Timing
parameter menu.