the contrast settings of the unit. The operating modes will be discussed in more detail in section 9.0. Enabling and disabling a channel can also happen on the fly in pulse generation and Divide By N modes. In pulse count mode this needs to be set before hand so the unit does not sit in an unknown state if it has not finished it’s count set, therefore, the unit will not allow it to be changed while pulsing. In Burst mode, disabling the channel is not available and both are enabled. When the mode is switched from Burst mode, the enable/disable settings will return to where they were previous to Burst mode. The trigger can be set to internal or external in pulse generation and pulse count modes. Note that the unit will “lock up” until it has finished it’s pulse count in external mode so the external triggering device must give it AT LEAST as many pulses as is entered. If this does not occur, the device can be “released” by switching modes. The sync can also be run off channel 1 or channel 2. This is especially useful in Divide By N mode and pulse count mode. Not that in Burst mode, the sync is a packet period limited by at most 95% duty cycle regardless of this setting.
The contrast setting can also be changed in this menu. If the contrast is adjusted by using the encoder knob or using the x10 button, a ‘?’ will appear at the end of the setting. This means that while the unit is powered this is the setting that the unit will retain but when powered down and powered up again the unit will revert to the last saved contrast. By depressing the ENTER button the contrast will be saved in
THE LOGIC MENU
The LOGIC MENU allows the user to logically AND or OR outputs OUT1 and OUT2. LOGIC1 will output on the OUT1 channel (note: the invert function will invert the channel AFTER the logic has been applied – this is shown in the LOGIC AND POLARITY FUNCTIONAL DIAGRAM below). LOGIC2 will output on the OUT2 channel.
Page 10
© 2004 Directed Energy, Inc.
