user`s manua - Circuit Abbey
Contents
1. module has 3 modes Trigger Gate Off and Gate Trigger mode The delay block captures rising edges only and produces a delayed trigger pulse See figure 1 Gate Off mode The delay block senses both edges on the input The rising edge is delayed but the falling edge occurs as soon as the input falling edge occurs This mode is useful when playing from a keyboard where you want the notes to end as soon as the key is lifted Figure 2 illustrates this Note in this mode if the gate goes low before the delay times out there will be no output This is because in this mode the input gate going low causes the output to go low and it has not gone high yet hence no output Gate mode The delay block senses both edges on the input and are delayed to produce the output This mode is preserves the gate on time f Figure 1 Trigger Delay 7 Figure 2 Gate Off Delay Figure 3 Gate Delay Module Width 4HP 20mm Module Depth 43mm Power Connector Standard Doepfer 16 pin Power Requirements 12 Volts at 20mA Max Input Impedance 20K Ohms Output Short circuit protected2. TripFire User Manual Features Trip Fire 4hp comparator Trigger Gate delay Comparator features Comparator with external level input or internal level adjustment e Level control is an attenuvertor e Jumper selectable polarity on comparator output Comparator output normalled to the delay input e LED output indicator Delay features e Switch selectable trigger gate delay e Jumper selectable fast slow delay time e LED indication of input and output status TripFire Description The TripFire is a combination comparator and trigger gate delay The comparator takes a bipolar input and compares it to a level set by the LEVEL control If a patch cord is plugged into the REF input it is compared to the input signal and the LEVEL control turns into an attenuverter for the REF input An LED shows the output state The output of course is available at the OUTPUT jack The polarity of the comparator output is jumper selectable The DELAY section operates as a trigger or gate delay The IN jack normalized to the comparator OUTPUT jack takes triggers or gates and delays them for a duration set by the DELAY control The G T button sets the delay mode and a three color LED shows the current mode An LED shows the output state and as always the output is on the OUTPUT jack The delay modes are Mode Function LED Color Trigger trigger in Delayed trigger out Green Gate Off gate on is delayed Gate
3. off follows input no delay Yellow Gate gate in Delayed gate out Red Delay time is about 1 second maximum with a jumper that makes the delay about 8 seconds maximum Module is AHP and draw TBD mA at TRIPFIRE Z A REF COMPARATOR TRIPFIRE 2 A COMPARATO E 2 a G IN Front Panel Interface Comparator In Affects the positive half of the input waveform This input has an attenuator and a bias control for presetting the level Ref Affects the negative half of the waveform This input has an attenuator and a bias control for presetting the level Level Affects both halves of the waveform As the Input increases the positive half of the input waveform warps more while the negative half warps less This input has an attenuator and a bias control for presetting the level LED Shows state of the comparator output Out Affects both halves of the waveform As the Input increases both the positive and the negative half warps more This input has an attenuator and a bias control for presetting the level Delay In Trigger gate input Output Operation COMPARATOR Comparator IN OUTPUT The comparator is a bipolar device which of course compares two levels and VE gt Tt rv produces an output based on that comparison The IN jack carries one signal directly to the comparator while the REF jack carries the
4. other through an attenuverter controlled by the LEVEL trim If there is nothing in the REF jack then the LEVEL trim provides a steady DC level REF LEVEL 5V This diagram shows the comparator operation The output is high when the IN signal exceeds the REF level Note there is a pair of polarity jumpers on the back of the module These are labeled POS and NEG The diagram shows the operation with the POS jumper in place When the NEG jumper is in the polarity ofthe output is opposite what is shown DO NOT JUMPER BOTH POS AND NEG AT THE SAME TIME MODULE DAMAGE WILL OCCUR Operation DELAY The delay section takes in a trigger or gate signal and delays it for a fixed time set by the DELAY control The delay range is about 1mS to 1Sec There is a jumper on the back of the module that will make the delay about 8mS to 8 Sec The IN jack of the delay section is normalized to the output of the comparator section The delay block is actually an event recorder which timestamps the incoming edges and plays them back with a delay The unit is capable of recording and storing 220 events at any time As the edges are played back they are removed from memory freeing the memory for new edge events Because this is a recording device it is possible to overflow the memory This will happen if very fast pulse trains are fed to the delay section The output may start to lose events or behave erratically The delay
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