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1 General Information 1.1 Introduction ... 1-1 1.2 Features ... 1-1 1.3 Warranty information ... 1-1 1.4 Manual addenda ... 1-1 1.5 Safety symbols and terms ... 1-2 1.6 Specifications ... 1-2 1.7 Unpacking and inspection ... 1-2 1.7.1 Inspection for damage ... 1-2 1.7.2 Shipment contents ... 1-2 1.8 Repacking for shipment ... 1-2 1.9 Optional Accessories ... 1-2 2 Card Installation 2.1 Installing and removing cards ... 2-1 3 Getting Started 3.1 Introduction ... 3-1 3.2 Front panel familiarization ... 3-1 3.3 Rear panel familiarization ... 3-6 3.4 Card connections ... 3-8 3.5 Expanding matrix size ... 3-10 3.5.1 Single unit expansion ... 3-10 3.5.2 Multiple unit expansion ... 3-16 3.5.3 System expansion issues ... 3-20 3.5.4 Documenting system configuration ... 3-20 3.6 Basic switching operation ... 3-22 3.6.1 Power-up ... 3-22 3.6.2 Selecting make/break and break/make rows ... 3-22 3.6.3 Modifying a relay setup ... 3-22 3.6.4 Storing setup and sending to relays ... 3-23 4 Operation 4.1 Introduction ... 4-1 4.2 Setup data paths ... 4-1 4.3 Power-up procedure ... 4-2 4.3.1 Line voltage selection ... 4-2 4.3.2 Line power connections ... 4-2 4.3.3 Power switch ... 4-2 4.3.4 Power-up self-test and messages ... 4-2 4.3.5 Power-up configuration ... 4-3 4.3.6 Master/slave power-up ... 4-4 4.4 Displays and messages ... 4-4 4.4.1 Alphanumeric display ... 4-4 4.4.2 Display messages ... 4-5 4.4.3 IEEE-488 status indicators ... 4-6 4.4.4 Crosspoint display LEDs ... 4-6 4.4.5 Make/break and break/make LEDs ... 4-8 4.4.6 Light pen ... 4-8 4.5 Selecting crosspoint display ... 4-10 4.6 Modifying crosspoint display ... 4-10 4.7 Copying crosspoint display ... 4-11 4.8 Inserting and deleting stored setups ... 4-12 4.9 Menu operations ... 4-12 4.9.1 Digital I/O ... 4-14 4.9.2 External trigger ... 4-14 4.9.3 Matrix ready ... 4-15 4.9.4 Stand-alone and master/slave ... 4-16 4.9.5 IEEE-488 bus address ... 4-17 4.9.6 Relay (hardware) settling times ... 4-18 4.9.7 Card labels ... 4-18 4.9.8 Self-test ... 4-18 4.9.9 Factory defaults ... 4-18 4.10 Selecting switching parameters ... 4-19 4.10.1 Programmed settling time ... 4-19 4.10.2 Make/break and break/make rows ... 4-19 4.11 Triggering ... 4-20 4.11.1 Trigger sources ... 4-20 4.11.2 Front panel triggering ... 4-21 4.11.3 Trigger overrun conditions ... 4-21 4.11.4 External trigger input ... 4-25 4.11.5 Matrix ready output ... 4-25 4.11.6 IEEE-488 bus triggering ... 4-25 4.12 Resetting ... 4-25 5 IEEE-488 Programming 5.1 Introduction ... 5-1 5.2 IEEE-488 quick start ... 5-1 5.3 Bus cable connections ... 5-3 5.4 Interface function codes ... 5-5 5.5 Primary address programming ... 5-6 5.6 QuickBASIC programming ... 5-7 5.7 Front panel aspects of IEEE-488 operation ... 5-8 5.7.1 Front panel error messages ... 5-8 5.7.2 Status indicators ... 5-9 5.7.3 Local key ... 5-10 5.7.4 Concurrent front panel and bus operation ... 5-10 5.8 General bus command programming ... 5-10 5.8.1 Overview ... 5-10 5.8.2 REN (remote enable) ... 5-10 5.8.3 IFC (interface clear) ... 5-11 5.8.4 LLO (local lockout) ... 5-11 5.8.5 GTL (go to local) ... 5-11 5.8.6 DCL (device clear) ... 5-11 5.8.7 SDC (selective device clear) ... 5-11 5.8.8 GET (group executive trigger) ... 5-11 5.8.9 SPE, SPD ( serial polling) ... 5-11 5.9 Device-dependent command (DDC) programming ... 5-12 5.9.1 Overview ... 5-12 5.9.2 A — External trigger ... 5-16 5.9.3 B — Matrix ready ... 5-17 5.9.4 C — Close crosspoint ... 5-18 5.9.5 D — Display ... 5-18 5.9.6 E — Edit pointer ... 5-19 5.9.7 F — Enable/disable triggers ... 5-19 5.9.8 G — Data format ... 5-20 5.9.9 H — Hit key ... 5-25 5.9.10 I — Insert blank setup ... 5-26 5.9.11 J — Self-test ... 5-26 5.9.12 K — EOI and hold-off ... 5-26 5.9.13 L — Download setups ... 5-27 5.9.14 M — SRQ and serial poll byte ... 5-28 5.9.15 N — Open crosspoint ... 5-30 5.9.16 O — Digital output ... 5-30 5.9.17 P — Clear crosspoints ... 5-31 5.9.18 Q — Delete setup ... 5-31 5.9.19 R — Restore defaults ... 5-32 5.9.20 S — Programmed settling time ... 5-32 5.9.21 T — Trigger ... 5-33 5.9.22 U — Status ... 5-34 5.9.23 V — Make/break ... 5-39 5.9.24 W — Break/make ... 5-39 5.9.25 X — Execute ... 5-40 5.9.26 Y — Terminator ... 5-41 5.9.27 Z — Copy setup ... 5-41 5.10 Relay command combinations ... 5-42 5.11 Timing considerations ... 5-43 6 Principles of Operation 6.1 Introduction ... 6-1 6.2 Overall function description ... 6-1 6.3 Microcomputer ... 6-1 6.3.1 Reset circuit ... 6-1 6.3.2 Address decoding ... 6-2 6.3.3 Memory ... 6-4 6.4 Relay control circuitry ... 6-4 6.4.1 Switching card Interface ... 6-6 6.4.2 Switching card logic ... 6-6 6.5 Display circuitry ... 6-10 6.5.1 Display data ... 6-13 6.5.2 Front panel keys ... 6-13 6.5.3 Display Interface ... 6-13 6.5.4 Refresh display/read keyboard ... 6-14 6.6 Light pen Interface ... 6-14 6.7 Master/slave circuitry ... 6-15 6.7.1 Serial communication ... 6-15 6.7.2 Control signals ... 6-17 6.8 Digital I/O ... 6-17 6.9 IEEE-488 bus Interface ... 6-17 6.10 Power supply ... 6-19 7 Maintenance 7.1 Introduction ... 7-1 7.2 Line voltage sensing ... 7-1 7.3 Fuse replacement ... 7-2 7.4 Fixed rack installation ... 7-2 7.5 Disassembly ... 7-5 7.6 Backplane jumpers ... 7-7 7.7 Battery replacement ... 7-9 7.8 Static-sensitive devices ... 7-9 7.9 Mainframe troubleshooting ... 7-9 7.9.1 Recommended test equipment ... 7-10 7.9.2 Power-up self-test ... 7-10 7.9.3 Power supply checks ... 7-10 7.9.4 Digital board checks ... 7-10 7.9.5 Display board checks ... 7-14 7.10 Using an extender card ... 7-16 7.11 Cleaning ... 7-16 7.11.1 Backplane ... 7-16 7.11.2 Fan Filter ... 7-16 8 Replaceable Parts 8.1 Introduction ... 8-1 8.2 Parts lists ... 8-1 8.3 Ordering information ... 8-1 8.4 Factory service ... 8-1 8.5 Component layouts and schematics ... 8-1 B IEEE-488 Bus Overview B.1 Introduction ... B-1 B.2 Bus description ... B-1 B.3 Bus lines ... B-3 B.3.1 Data lines ... B-3 B.3.2 Bus management lines ... B-3 B.3.3 Handshake lines ... B-3 B.4 Bus commands ... B-4 B.4.1 Uniline commands ... B-4 B.4.2 Universal multiline commands ... B-5 B.4.3 Addressed multiline commands ... B-5 B.4.4 Address commands ... B-5 B.4.5 Unaddress commands ... B-5 B.4.6 Command codes ... B-5 B.4.7 Typical command sequences ... B-7 B.4.8 IEEE command groups ... B-7 B.5 Interface function codes ... B-8