Model 7002Switch System Instruction Manual - Advanced Test ...

Front Panel OperationExample 3:ARM SPACING = MANUAL, GPIB, EXTERNAL or TRIGLINKSCAN SPACING = TIMER, EXTERNAL, GPIB, MANUAL or TRIGLINKCHANNEL SPACING = TIMER, EXTERNAL, GPIB, MANUAL or TRIGLINK1. Press OPEN ALL to open all channels and place theModel 7002 in the idle state.2. Press STEP to take the 7002 out of the idle state.3. The arm spacing event allows operation to pass into thescan layer.4. The first scan spacing event passes operation into thechannel layer.5. The first channel spacing event will scan the first channelin the scan list.6. The next channel spacing event will scan the secondchannel.7. The next scan spacing event will pass operation backinto the channel layer.8. The next channel spacing event will scan the first channel.9. The next channel spacing event will scan the secondchannel and disarm (idle) the scanner.Example 4:ARM SPACING = MANUAL, GPIB, EXTERNAL or TRIGLINKSCAN SPACING = IMMEDIATECHANNEL SPACING = TIMER, EXTERNAL, GPIB, MANUAL or TRIGLINK1. Press OPEN ALL to open all channels and place theModel 7002 in the idle state.2. Press STEP to take the 7002 out of the idle state.3. The arm spacing event allows operation to pass into thescan layer.4. Operation passes immediately into the channel layersince IMMEDIATE scan spacing is selected.5. The first channel spacing event will scan the first channelin the scan list.6. The next channel spacing event will select the secondchannel.7. Operation passes automatically back into the channellayer since IMMEDIATE scan spacing is selected.8. The next channel spacing event will select the first channel.9. The next channel spacing event will select the secondchannel and disarm (idle) the scan.Scanning notes:1. The STEP key (or LED) is always functional during ascan and can be used to provide a spacing event. For example,if programmed for TIMER channel spacing, theSTEP key (or LED) can also be used to select the nextchannel.2. Forbidden Channels cannot be entered into the scan list.3. With Single Channel enabled, only the lowest numberedchannel in a channel pattern (i.e. M1) will close whenselected.4. Card Pair is functional during a scan. The channels includedin the scan list and the corresponding channelsfor the other slot will be scanned.Summary of scan keys and LEDs:OPEN ALL ⎯ Use to stop a scan, open all channels, andplace the Model 7002 in the scan idle state.STEP ⎯ Use to take the Model 7002 out of the idle state; andalso, use to manually step through a scan.4.11 Channel patterns (STORE and RECALL)A channel pattern is simply a pattern of open and closedchannels that is stored in memory. Up to 500 channel patternscan be stored in memory.Channel Patterns are not lost (cleared) when the instrumentis turned off. However, a Channel Pattern is cleared if any ofthe following events occur:1. A closed channel in the Channel Pattern becomes unavailable.A channel can become unavailable by changinga slot assignment (Card TYPE) or by changing to apole mode that reduces the number of available channels.2. A closed channel in the Channel Pattern becomes restricted.A channel becomes restricted by adding it to therestricted channel list.4-27