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- Quantum Composers
- Pulse Generator
- 9520 Series
- Operating Manual
Quantum Composers 9520 Series Operating Manual
Summary of 9520 Series
Page 1
1-1 9520 series pulse generator operating manual version 5.6 quantum composers, inc. 212 discovery drive bozeman, mt 59718 phone: (406)582-0227 fax: (406)582-0237 www.Quantumcomposers.Com your distributor:.
Page 2: 1 Table Of Contents
1-2 1 table of contents 1 table of contents ....................................................................................... 1-2 2 introduction ................................................................................................. 2-6 technical support ................................
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1-3 configuring the channel multiplexer .................................................................... 6-18 channel gate menu ............................................................................................... 6-18 setting the sync source ..............................................
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1-4 external input overview ............................................................................................ 7-28 to generate a pulse on every trigger input ......................................................... 7-28 to generate a burst of pulses on every trigger input ..................
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1-5 system options ....................................................................................................... A-4 safety marking symbols............................................................................................. B-5 com overview ...........................................
Page 6: 2 Introduction
2-6 2 introduction this manual is a reference designed to familiarize you with the quantum composers 9520 series pulse generator and is arranged so that you can easily find the information you’re looking for. Generally, each topic has its own section and no section assumes that you’ve read anything ...
Page 7: 3 Safety Issues
3-7 3 safety issues normal use of test equipment presents a certain amount of danger from electrical shock because testing must be performed where exposed voltage is present. An electrical shock causing 10 milliamps of current to pass through the heart will stop most human heartbeats. Voltage as low...
Page 8: 4 Front Panel Overview
4-8 4 front panel overview 9520 front panel display layout and indicators a 4 line x 20 character vacuum fluorescent display module displays parameters and status information. The status information is located in the upper-left corner of the display, between the two brackets. There are four enunciat...
Page 9
4-9 right (right) and left (left) arrow keys moves the cursor to different positions within the current parameter. The next key selects the next parameter in the currently displayed menu. Numeric keypad allows numbers and alphanumeric values to be entered. When entering alphanumeric values, pressing...
Page 10: Operations
5-10 5 pulse concepts and pulse generator operations counter architecture overview *start source is: run/stop key in internal modes external input in external trigger modes *trg command via serial/gpib access **channels are armed by the run button. In single shot and burst modes channels may be rear...
Page 11
5-11 the t 0 pulses are distributed to all of the start inputs of the channel timers and mode generators channel timer functions the channel timer functions as a non-retriggerable, delayed, one shot pulse generator. This means that the timer will only generate one delayed pulse for every start pulse...
Page 12
5-12 navigating the 9520 front panel selecting menus parameters are grouped in menus, selectable using menu keys. To select the output channel parameters press the letter key corresponding to the desired channel. To select second level menus press the func key and then the key corresponding to the d...
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5-13 (cw adjustment knob) enables the item and the down arrow (ccw adjustment knob) disables the item. Alphanumeric input mode when the current item is alphanumeric, the system enters the alphanumeric input mode. In this mode, data is entered using the alphanumeric keypad. Pressing a key will displa...
Page 14
5-14 setting pulse timing parameters pulses are defined by a delay, from their sync or start pulse to the active edge, and a width. Wid: sets the width of the active portion of the pulse. Dly: sets the delay from the sync source to the start of the pulse. Note: if wid + dly + 75ns (hardware reset ti...
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5-15 to set the system internal rate press the yellow func key, then press the rate key, and then use the dial or number pad to specify the t 0 period..
Page 16: 6 9520 Menu Structure
6-16 6 9520 menu structure system mode menus (func + mode key) mode: continuous mode: single shot mode: burst mode: duty cycle #/on #/burst #/off setting system mode of operation the mode menu sets the t 0 system timer mode. The menu will show the extra set parameters (burst, on & off) only when the...
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6-17 mode menu channel enable channel enable channel enable channel enable mode: normal mode: single shot mode: burst mode: duty cycle #/on pulses #/burst pulses #/off pulses wait menu channel enable #/wait pulses enabling channel output at the top of each of the channel menu pages is a parameter to...
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6-18 on: sets the number of pulses to generate before inhibiting output in duty cycle mode. Off: sets the number of pulses to inhibit before repeating the on cycle in duty cycle mode. Delaying the start of channel output within any channel mode, the output of the channel can be delayed using the wai...
Page 19
6-19 gate: enables the gate input for the channel by setting the method of output control used with the gating function. Logic: sets the logic level used with the gating function, either active high or active low. “pulse inhibit” method t he gate prevents the channel from being triggered by the chan...
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6-20 reference out menu ref out: t 0 pulse ref out: 100mhz ref out: 50mhz ref out: 33.33mhz ref out: 25mhz t 0 period t 0 period t 0 period t 0 period t 0 period ref out: 20mhz ref out: 16.67mhz ref out: 14.2857mhz ref out: 12.5mhz ref out: 11.11mhz t 0 period t 0 period t 0 period t 0 period t 0 pe...
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6-21 enabling system gate enables the use of the gate input as a trigger inhibit or output control for all channels simultaneously, or on a per channel basis. Mode: selects between disabling the gate inputs and method of output control level: sets the gating threshold. Logic: sets the active logic l...
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6-22 user options menu 2 auto start mode decimal mark lcd brightness setting the auto start mode the unit may be configured to automatically start generating pulses after power up. Setting the display decimal mark mark: selects the format of the decimal mark, “.” or “,”. Setting the display brightne...
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6-23 recall menu (func + recall key) configuration # name help line recalling system configurations use the following procedure to recall a stored or default system configuration: enter the recall menu (func + recall). Select a configuration number. From the recall menu, press the recall key sequenc...
Page 24: 7 Operating The 9520
7-24 7 operating the 9520 quick start - normal internal rate generator operation the 9520 has a powerful set of functions providing a number of modes of opera tion for the internal or “system” rate generator (t 0 ). Most of these functions can be ignored if a simple continuous stream of pulses is re...
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7-25 pulse width, delay enter the channel menus by pressing the letter key. Enter the required pulse width and delay. Repeat for each output channel. Start press the run/stop key to start/arm the instrument. The 9520 will now generate a pulse for every valid trigger. Stop press the run/stop key a se...
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7-26 pressing the run/stop button while the burst is in process will stop the output. After the burst has been completed, pressing the run/stop button will generate another burst. T 0 generate a burst of pulses: - within the system mode menu mode: select the burst mode. Burst: set the number of puls...
Page 27
7-27 mode: select the normal mode. Pressing the run/stop key will now generate a continuous stream of pulses. To use channel single shot function the single shot mode generates a single pulse every time the run/stop key is pressed. If the unit is in the active state, ( i.E. Channels which are set to...
Page 28
7-28 function, set the on cycle to 1 and set the off cycle to (n- 1), where “n” is the divide-by-n factor. To use the channel gating function each channel may use the external input to gate or control its output. The gate controls the triggering of the channel. To use the gate, set the following par...
Page 29
7-29 to generate a burst of pulses on every trigger input to generate a burst of pulses for every external trigger received set the following parameters: - within the mode menu mode: select the burst mode. Burst: set the number of pulses to generate in each burst. - within the rate menu to: set the ...
Page 30
7-30 that occur after the pulses start are ignored. Pressing the run/stop key a second time will disarm the unit. To use the external gate to control the system the external gate may be used to control the output of the unit. To gate the system timer: - within the mode menu mode: select the desired ...
Page 31: 8 Programming The 9520
8-31 8 programming the 9520 personal computer to pulse generator communication the 9520 ships standard with an rs232 serial and usb interface. Ethernet and gpib interfaces are available as an option. All menu settings can be set and retrieved over the computer interface using a simple command langua...
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8-32 usb interface overview the usb interface is standard on the 9520. Before this type of communication can be used, the appropriate drivers must be installed on the personal computer (pc). These drivers are included on the cd that was shipped with your unit. Please contact quantum composers or vis...
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8-33 programming command types and format the 9520 pulse generator uses two types of programming commands: ieee 488.2 common commands and standard commands for programmable instruments (scpi). The format is the same for all interfaces. Hyperterminal (in windows) or any other generic terminal program...
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8-34 *idn? Scpi command format scpi command keywords the commands are shown as a mixture of upper and lower case letters. The upper case letters indicate the abbreviated spelling for the command. You may send either the abbreviated version or the entire keyword. Upper and/or lower case characters ar...
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8-35 scpi optional keywords optional keywords and/or parameters appear in square brackets ( [ ] ) in the command syntax. Note that the brackets are not part of the command and should not be sent to the pulse generator. When sending a second level key-word without the optional keyword, the pulse gene...
Page 36
8-36 programming examples example 1) 20 ms pulse width, 2.3 ms delay, 10 hz, internal trigger, continuous operation. :pulse1:state on enables channel a :pulse1:pol norm sets polarity to active high :pulse:widt 0.020 sets pulse width to 20 ms :pulse1:delay 0.0023 sets delay to 2.3 ms :pulse0:mode nor...
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8-37 9520 instrument commands (scpi command summary) keyword parameter comments :instrument subsystem. Supports treating each channel as a logical instrument. :catalog? Query only. Returns a comma-separated list of the names of all channels. A two channel instrument would return: t0,cha,chb. :full? ...
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8-38 9520 system pulse[0] commands (scpi command summary) keyword parameter comments :pulse[0] subsystem. Contains commands to control the output pulse generation. Commands without suffix refer to the currently selected logical instrument. See instrument subsystem. :counter subsystem. Contains comma...
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8-39 9520 channel pulse[n] commands (scpi command summary) keyword parameter comments :pulse [1 / 2 / n] subsystem. Contains commands to control the output pulse generation. Valid suffix range depends on the number of channels (cha = 1, chb = 2, etc). Command without suffix refers to the currently s...
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8-40 9520 system commands (scpi command summary) keyword parameter comments :system :state? Query only. Returns the state of the machine: returns "1" if the machine is armed and/or generating pulses or "0" if the machine has been disarmed. :beeper subsystem. Controls the audible beeper. :state 0/1 o...
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8-41 9520 display commands (scpi command summary) keyword parameter comments :display subsystem. Contains commands to control the display. :mode 0/1 or on/off enables/disables automatic display update. When true, front panel display is updated with serial command parameter changes. Setting to false ...
Page 42
A-1 appendix a - 9520 specifications internal rate generator rate (t 0 period) 0.0002 hz to 20.000 mhz resolution 10ns accuracy same as timebase jitter settling 1 period burst mode 1 to 9,999,999 pulses timebase 100 mhz, low jitter pll oscillator 50 mhz, 25ppm system output modes single pulse, burst...
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A-2 gate input mode pulse inhibit or output inhibit polarity active high/active low module specifications ttl/adjustable dual channel output module (standard) output impedance 50 ohm ttl/cmos mode output level 4.0 v typ into 1 kohm rise time 3 ns typ (10% - 90%) slew rate > 0.5 v/ns jitter 50 ps rms...
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A-3 jitter 800 ps rms insertion delay minimum pulse width 2 ns gate input polarity active high/active low function pulse inhibit or output inhibit channel behavior global w/individual channel pulse inhibit delay 120 ns output inhibit delay 50 ns optical outputs wavelength 820 nm or 1300 nm maximum s...
Page 45
A-4 output modules standard at20 dual channel, ttl/cmos & adjustable output module optional l82 dual channel, 820 nm optical output module l130 dual channel, 1300 nm optical output module at35 dual channel, ttl/35 v high voltage output module at45 dual channel, 45 v high and low impedance voltage ou...
Page 46
B-5 appendix b - safety symbols safety marking symbols technical specifications including electrical ratings and weight are included within the manual. See the table of contents to locate the specifications and other product information. The following classifications are standard across all qc produ...
Page 47
B-6 iec 417, no. 5017 earth (ground) terminal - primarily used for functional earth terminals which are generally associated with test and measurement circuits. These terminals are not for safety earthing purposes but provide an earth reference point. Iec 417, no. 5019 protective conductor terminal ...
Page 48
B-7 iso 3864, no. B.3.6 background colour - yellow; symbol and outline – black caution, risk of electric shock - generally used only for voltages in excess of 1000 v. It is permissible to use it to indicate lower voltages if an explanation is provided in the manual. Colour requirements do not apply ...
Page 49: Appendix C - Com Option
C-8 appendix c - com option com overview the com option for the 9520 includes a gpib and an ethernet interface in addition to the rs232 and usb interfaces included with the standard product. The command set is the same for the rs-232, usb, gpib, and ethernet. Different interfaces may be used at the ...
Page 50
C-9 connect, digi device discovery”. When the utility opens, it scans the lan looking for digi ethernet modules. It may take a minute after plugging in or powering the ethernet module before the lan negotiates the connection with the digi module. Hit “refresh view” in the left column after a minute ...
Page 51
D-10 appendix d - dt15 (dual trigger option) dt15 overview this module option allows the “gate” input to function as a second trigger input. For consistency, the enabling menu for this option is located under the “trig” menu structure. Once the dual trigger mode is enabled, both the “gate” and “trig...
Page 52
D-11 threshold level threshold level trigger edge trigger edge *only enabled when trig mode is set to “dual trig”. Functions as standard gate menu wh en not in “dual trig” mode. Dt15 scpi command summary keyword parameter comments :pulse [0] subsystem. Contains commands to control the output pulse g...
Page 53
E-12 appendix e - at35 (35v output option) at35 description when the adjustable mode is enabled for this module, the outputs will provide an adjustable output from 5 volts to 35 volts. The pulse width can be set over the standard range of the unit, but the 35 volt output will self limit to approxima...
Page 54: Output Module)
F-13 appendix f - tz50 (impedance matching output module) tz50 overview this module option allows a user to have a 50 ohm load on the output while maintaining output amplitude of at least 4 volts while in the ttl/cmos mode. All other functionality of the module is the same as the at20 modules, inclu...
Page 55
G-14 appendix g - increment modes option increment overview the system increment modes are a pair of special modes, which allow the delay and width of each channel to be incremented at the end of a burst of pulses. Each channel is independent and each may be set with different initial values and dif...
Page 56
G-15 off: sets the number of pulses to skip each during off cycle when in the duty cycle mode. Cycles: sets the number o dc increment cycles to generate before completion. To: sets the t 0 period which determines the fundamental output frequency of the unit. Advanced channel menu increment extension...
Page 57
G-16 width step resolution 250 ps width incremented range 10,000 s delay step size -100 ms to 100 ms delay minimum step 10 ns (-10ns) delay step resolution 250 ps delay incremented range 10,000 s *note: any increment value between -10 ns and 10 ns will disable the increment function for that paramet...
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H-17 appendix h - at45 option (45 volt output) at45 option overview for channels with at45 output option, the maximum frequency is limited to 100 khz. The pulse width can be set over the standard range of the unit with both active high and low outputs when set to high impedance mode. In low impedanc...
Page 59
H-18 at45 channel menus channel output configuration menu channel enable channel enable output type: high z output type: low z polarity output level output level at45 scpi command extension summary keyword parameter comments :pulse [1 / 2 / n] subsystem. Contains commands to control the output pulse...
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H-19 figure 1 (high z 5v) figure 2 (high z 45v).
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H-20 figure 3 (low z 5v) figure 4 (low z 45v).
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H-21 rise time and overshoot are tuned for best response at low impedance (low z) figure 5 (rise time versus output voltage) figure 6 (fall time versus output voltage).
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H-22 figure 7 (overshoot versus output voltage).