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Summary of Contents for Stanford Research Systems SR10
- Page 1 Operating Manual and Programming Reference Model SR10, SR11 & SR12 Switching Systems STANFORD RESEARCH SYSTEMS SR10, SR11 & SR12 Switching Systems Revision 1.0 (6/24)
- Page 2 Certification Stanford Research Systems certifies that this product met its published specifications at the time of shipment. Stanford Research Systems further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (NIST). Warranty This Stanford Research Systems product is warranted against defects in materials and workmanship for a period of one (1) year from the date of shipment.
- Page 3 Do not remove the cover while the unit is plugged in to a live outlet. Line Voltage The SR10, SR11 and SR12 operate from a 90 to 264 Vrms AC power source having a line frequency of 47 to 63 Hz. Line Cord The SR10, SR11 and SR12 has a detachable, three-wire power cord for connection to the power source and to a protective ground.
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Page 5: Chapter 1 Introduction
A & B signals that can be used to cascade multiple SR10 switch boxes. (Schematic) The relays of SR10 can connect any of the 12 input channels to either A or B. When used with SR1 these are normally connected to the A & B XLR inputs, allowing it measure 12 or more channels. -
Page 6: Front Panel
Ch1 – Ch12 indicate if it is connected to A (green), B (orange) or neither (none). (A|B & Ch1 picture) Status Indicators Three status indicator LEDs on the right side to indicate the status of the SR10, SR11 and SR12. (status indicator picture) ERR: (red) This is lit to indicate that an execution or command error has occurred. - Page 7 Computer Interfaces The audio switchers are controlled by one of three different computer interfaces: RS-232, GPIB (IEEE-488) or Ethernet. These will be described in detail in Chapter 2. RS-232 Out: The 9 pin RS-232 Out connector is configured as a DTE (transmit on pin 2, receive on pin 3) and is used when multiple units are cascaded over RS-232.
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Page 8: Operation
The Audio Switchers can be either an input or an output switch that have different allowed configurations. SR10 is always configured as an input switch; SR11 is always configured as an output switch. SR12 can be configured as either an input or output switch depending on an internal configuration jumper. -
Page 9: Computer Control
Sr12 is configured as an input or output switch box depending on the position of jumper J202 inside of the SR12 chassis at power on. SR12 will behave the same as SR10 if configured as an input and the same as SR11 if configured as an output. -
Page 10: Gpib Interface
set in the Switcher Status Register. See the Daisy Chain Flow Control in Chapter 3 for details on implementation. The serial daisy chaining is active for all interfaces (except the web page) no matter which interface is connected to the computer. So it is possible to make a hybrid interface using GPIB or Ethernet as connection to the computer and RS-232 daisy chaining to connect to the rest of the switches. -
Page 11: Socket Interface
This page shows the Audio Switchers basic information in a read only format and hyperlinks to the remainder of the web pages. Note that the hyperlinks (left side of the page) are available for all of the web pages. Instrument Model SR10, SR11 or SR12. Set at the factory Manufacturer Stanford Research Systems. Serial Number Set at the factory. - Page 12 See the section on “Configuring Ethernet Parameters” for details on their use. Host Name Initially “SwitcherHostName”. Domain Initially blank. MAC Address Set at the factory. IP Assignment Static. SR10, SR11 and SR12 only support static IP address assignment. IP Address Initially “172.25.96.235” Subnet Mask Initially “255.255.0.0” Default Gateway Initially “172.25.0.1”...
- Page 13 This shows the current status of the Audio Switcher. It can be particularly useful in debugging programs. Switcher Type Always INPUT for SR10, OUTPUT for SR11 and either for SR12, depending on the internal jumper setting. See “Setting SR12 to Input or Output”.
- Page 14 Switcher Security Setting Page The page allows the user to select and configure the desired security method. See the section on “Network Security” for details on their use. Security Methods None, IP checking, UserID_Password or IP + UserID_Password Trusted IP Range An inclusive range of IP addresses that are allowed to control the switcher.
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Page 15: Configuring Ethernet Parameters
Configuring Ethernet Parameters Before attempting to communicate with the Audio switcher over a LAN, it is necessary to configure the connection speed (normally set to auto 10/100) and the Ethernet IP parameters. Audio switchers support static IP parameters only. These are set up on the Audio Switcher configuration Web pages using a web browser. - Page 16 methods are not sufficient it will be necessary to provide it at a higher level on your network. A possible implementation for this could involve setting up a firewall and operating the Audio Switchers behind it. Security Method There are 4 possible settings: None, IP Range Checking, Password Protection or Both. Select the desired method.
- Page 17 5) (no password protection) If you are operating from a trusted IP address (if enabled) the web page should be visible. Click on the Validate button to confirm the new trusted addresses. If you do not validate the parameters within 2 minutes, the unit will revert to the previous settings.
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Page 18: Chapter 3 Programming
Chapter 3 Programming Device Clear Regardless of interface, the communication interface can be cleared “out of band” from normal command path. This allows the host computer to reset the interface to a known state regardless of the current interface or commands. All of these functions cause the switcher to flush its input queue and output buffer, reset the parser to the idle state and terminate any current commands. -
Page 19: Command Syntax
Power on State On power-on the switch box is configured as listed below. All output queues, event status registers and enable registers are cleared and the parser is set to the idle state. Definition Power on State Input Switch All set to NONE (open) Output Switch All set to NONE (open) Debounce... -
Page 20: Floating Point Values
Commands can take the set or query form depending on whether the “?” follows the command. Commands that may ONLY be queried always have the “?” after the mnemonic. Set only commands have no “?” and commands that may be set or queried have “(?)” after the mnemonic. Parameters shown in { } or [ ] are not always required. -
Page 21: Ieee 488.2 Common Commands
IEEE 488.2 Common Commands *IDN? Identification Query Returns the switch box identification string “StanfordResearchSystems,Srid,sn,vn; where Srid is Sr10, Sr11 or Sr12, sn is the x digit serial number and vn is the 3 digit firmware version number of the unit. *RST Reset Command This command sets the switch box to its default state, as listed below. -
Page 22: Interface Commands
Interface Commands TOKN (?) {z} Enable Token Response Sets (queries) the Token Query mode {to z = (OFF 0, ON 1)} When the Token Query mode is enabled, all queries will return tokens (i.e. on, off, A, B, None). When disabled queries will be represented as integers (i.e. 0, 1, 2, -1). LEXE? Query Last Execution Error Returns an integer that indicates the last execution error since the last LEXE? or power-on per... -
Page 23: Switch Control Commands
The following commands control the switch boxes. Any differences between the commands behavior for input or output switch boxes is listed here. Sr12 will behave the same as SR10 if configured as an input and the same as SR11 if configured as an output. -
Page 24: Global Commands
$SER (?) {i} Serial Number Sets (queries) the units serial number. {i} is a unsigned 16 bit integer between 0 – 65535. $MDL (?) {b} Model number Sets (queries) the units model name {SR10, SR11, SR12). SR10, SR11 or SR12 are strings. -
Page 25: Register Model
Register Model The SR10, SR11 and SR12 follow the hierarchical IEEE-488.2 format. A block diagram of the status register array is shown on fig… There are three categories of status registers: Event Registers, Enable Registers and Summary Registers. Event Registers These read-only registers record the occurrence of defined events within the Audio Switch Box. - Page 26 Operation Complete Set by the *OPC command. QYE: Query Error Indicates an attempt to read data when no data is available or pending (GPIB only) or data in the output queue has been lost. DDE: Device Dependent Error Undefined for SR10/SR11/SR12...
- Page 27 EXE: Execution Error Indicates an error in a command that was successfully parsed. Out of range parameters are an example. The error code can be queried with LEXE? CME: Command Error Indicates a parser detected error. An incorrect command is an example. The error code can be queried with LCME? PON: Power On...
- Page 28 IBF: Input Buffer Full Set when the input buffer has 128 bytes of data. A command terminator is appended to the end of buffer so the command parser can process the message. Normally processing the message will generate a command or execution error, since the message was truncated HFE: Host Serial Port Frame Error...
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