HP E1418A Operation & User’s Manual
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HP E1418A, Current Adjustment Current output uses an internal resistance value to calibrate all channels. This resistance value is approximately 244 Ω. Note You may also use an external resistance value on each channel for current output calibration. If you wish to specify an external resistor value, you must send the DIAGnostic:CALibration:OUTPut CHANnel command and perform the adjustment at each channel output. Any resistor value may be used but values in the range of 50 Ω to 500 Ω are recommended. To set the internal resistance value use the following CALibration commands:
The output can also be disabled before changing the mode or output value. Use the OUTPutn commands to disable the output. /* Set channel 1 for 5.0 Volt output */ APPLy1:VOLTage 5.000 /* Disable the output */ OUTPut1 OFF /* Channel 1 output relay is opened */ /* Now, enable the output */ OUTPut1 ON /* Channel 1 is set to voltage output and 5.000 V applied */ /* Disable the outp
HP E1418A, HP E1418A Command Quick Reference The following table summarizes commands for the HP E1418A. Command Description APPLyn :CURRent <value | MIN | MAX | DEF> Closes the output relay and outputs a current on the specified channel, n. :VOLTage < value | MIN | MAX | DEF> Closes the output relay and outputs a voltage on the specified channel, n. CALibration :CONDition? Queries the module type and calibration status. The query returns four 16-bit unsigned integers. :CONFigure:RESistance? Configures the module to perform calibration of the inte
HP E1418A, Appendix C. HP E1418A Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 Error Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Appendix D. Voltage/Current Output Adjustment . . . . . . . . . . . . . . . . . . . . . . 158 Using This Appendix . . . . . . . . . . . . . . . . . . . . .
APPLy The APPLy subsystem enables and outputs a current or voltage on the specified channel. Subsystem Syntax APPLyn :CURRent <value | MIN | MAX | DEF> :VOLTage < value | MIN | MAX | DEF> APPLyn:CURRent APPLyn:CURRent <value | MIN | MAX | DEF> outputs a current on the specified channel, n. Parameters Parameter Name Parameter Type Range of Values Default APPLy n keyword 1 to 8 o
Note Writing an address to the Logical Address Register is typically performed by the resource manager as a part of dynamic addressing. If the address is changed by a write to the Logical Address Register, later accesses must use the new address. A24 Registers The HP E1418A requires 256 kbytes of A24 address space. The resource manager determines the location in A24 space of the
HP E1418A, Notes Each incremental value of the A24 Window offsets the window by 32 bytes. Up to 512 bytes of A24 space can be pointed to. A24 Window values 8 16 through F 16 point to Calibration Registers. Calibration Registers 00100 16 through 001BE 16 are located in non-volatile (FLASH) memory. Writing to this memory requires a complicated sequence of register accesses not documented here. It is recommended that calibration be performed using the SCPI driver for the module, not register access. Main_DAC Immediate Registers The Main_DAC Immediate Registers are used to program the next output value on a channel. There are 16 registers, one for each
HP E1418A, SYSTem The SYSTem subsystem returns information about the module. Subsystem Syntax SYSTem :ERRor? :VERSion? SYSTem:ERRor? SYSTem:ERRor? returns an error number and message from the instrument’s error queue. Parameters Returns: 16-bit signed integer (int16) and a string. Comments • Each query returns an error number and error string from the queue. When no errors are in the error buffer, the query returns +0,"No error". • *CLS clears the error queue. • *RST has no effect on the error q
HP E1418A, Module Identification This example can be used to verify that the logical address has been correctly set, that the module is correctly installed, and that the module is communicating with the command module. The terminal module does not need to be installed for this example to work. This example queries the module for the identification string. 10 DIM A$[256] 20 OUTPUT 70909;"*IDN?" 30 ENTER 70909;A$ 40 PRINT A$ 50 END The response should be similar to one of the following: HEWLETT-PACKARD,E1418A_8CH,xxxxAxxxx,A.01.00 or HEWLETT-PACKARD,E1418A_16CH,x
HP E1418A, Connecting an External Trigger Source An external trigger input is provided on the terminal module. Use the external trigger to externally synchronize multiple outputs or multiple instruments. The External Trigger uses TTL levels. The trigger occurs when the EXT TRIGn connection is pulled low for at least 1 µS. Typical connections to the external trigger is shown in Figure 1-16. Options A3E and A3H Terminals The external trigger line is located on the upper connector and is labeled EXT TRIGn in the diagram on page 30. Figure 1-16. External Trigger Connections Chapter 1 Module Setup and Installation 35
HP E1418A, Channel Program Jumper Register The Channel Program Jumper Register returns the state of the P/J jumper on each channel. Additional information about these jumpers is given on page 31. Address Base + 16 16 Bit 15141312111009080706050403020100 READ Ch 16 Jmpr Ch 15 Jmpr Ch 14 Jmpr Ch 13 Jmpr Ch 12 Jmpr Ch 11 Jmpr Ch 10 Jmpr Ch 09 Jmpr Ch 08 Jmpr Ch 07 Jmpr Ch 06 Jmpr Ch 05 Jmpr Ch 04 Jmpr Ch 03 Jmpr Ch 02 Jmpr Ch 01 Jmpr Ch XX Jmpr: A one (1) in a field indicates that the P/J jumper is in the program selectable position. A zero (0) indicates the P/J jumper is set to the jumper selectable position. When the P/J jumper is in the program selectable position (1)
HP E1418A, Ordering Options The HP E1418A may be ordered from Hewlett-Packard in a variety of configurations. As ordered, the module has the following options: Description HP E1418A 8-Channel D/A Converter with Non-Isolated Outputs HP E1418A Option 001 16-Channel D/A Converter with Non-Isolated Outputs HP E1418A Option 002 8-Channel D/A Converter with Isolated Outputs HP E1418A Option 003 16-Channel D/A Converter with Isolated Outputs Field Kits The module can also be user configured as described beginning on page 169 of this manual. The following field expansion and configuration kits are available: Description Use HP E1523A Single Channel Isolated plug-on module To change a single channel fro
HP E1418A, Current Calibration Status Register The Current Calibration Status Register provides a non-volatile record of the current calibration status for each channel. This register is non-volatile. Address Base + 186 16 Bit 15141312111009080706050403020100 READ Ch 16 Curr Cal Stat Ch 15 Curr Cal Stat Ch 14 Curr Cal Stat Ch 13 Curr Cal Stat Ch 12 Curr Cal Stat Ch 11 Curr Cal Stat Ch 10 Curr Cal Stat Ch 09 Curr Cal Stat Ch 08 Curr Cal Stat Ch 07 Curr Cal Stat Ch 06 Curr Cal Stat Ch 05 Curr Cal Stat Ch 04 Curr Cal Stat Ch 03 Curr Cal Stat Ch 02 Curr Cal Stat Ch 01 Curr Cal Stat WRITE Ch XX Curr Cal Stat: This field is set to a one (1) when the channel has been successfully current ca
Appendix B HP E1418A Register-Based Programming The HP E1418A 8/16 Channel D/A Module is a register-based module. It does not support the VXIbus word serial protocol. The module may be controlled at the register level or, with appropriate drivers, controlled by higher level commands. The SCPI commands described in this manual are parsed by an HP E1405/ E1406 Command Module and turned into
HP E1418A, SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude]? SOURcen:VOLTage[:LEVel]:TRIGgered][:AMPLitude]? [<MIN | MAX | DEF> queries the latest value written by either SOURcen:VOLTage[:LEVel]:TRIGgered[:AMPLitude] or SOURcen:VOLTage[:LEVel][:IMMediate][:AMPLitude]. Parameters Parameter Name Parameter Type Range of Values Default SOURce n keyword 1 to 8 or 1 to 16 1 <MIN | MAX | DEF> discrete (optional) MIN | MAX | DEF none Returns: 32-bit floating point number (float 32). Comments • In the keyword, SOURcen, the valid range of n is: 1 to 8 for E1418A, E1418A Option 002 1 to 16 for E1418A Option 001, E1418A Option 003. Values of
HP E1418A, Appendix A HP E1418A Specifications DC Voltage Range: ±16 V Resolution: 16 bits (488 µV steps) Monotonic to 2.0 mV Accuracy: ±(% of value + volts) After calibration and at a temperature within ±5 °C of calibration temperature. 90 day: ±(0.05% + 3.0 mV) Output Current: Compliance Current : >20 mA, 0 to ±12 Volts, derate linearly to 5 mA at ±16 Volts Short Circuit Current: <60 mA Differential Ripple and Noise: < 2 mV rms, 20 Hz to 250 kHz into 10 kΩ load DC Current Range: -0.02 Amps to +0.02 Amps Resolution: 16 bits (610 nA steps) Monotonic to 2.5 µ
HP E1418A, option A3H, 32 Parallel Connections, 34 Parameters boolean, 60 defined, 60 discrete, 60 numeric, 60 optional, 60 SCPI Commands, 60 Pinout front panel connectors, 18 terminal module connectors, 30 Plug-On Module channel locations, 177 configuration report, 137 installing, 176–177 isolated, 15, 17 non-isolated, 17 *PMC, 106 Power Requirements, 113 Preset Enable Registers, 96 Problem Isolation, 178 Program channels gain value, 143 selectable jumper, 31 synchronizing with module, 56 Programming Examples, 39–57 combining output channels, 57 direct register access, 152–153 driver list, 37 full calibration, 167–169 module configuration qu
Address Read Registers Write Registers Type Base + 140 16 Ch 01 Current Offset_Cal Channel Current Offset Cal Storage Registers (non-volatile) Base + 142 16 Ch 02 Current Offset_Cal Base + 144 16 Ch 03 Current Offset_Cal Base + 146 16 Ch 04 Current Offset_Cal Base + 148 16 Ch 05 Current Offset_Cal Base + 14A 16 Ch 06 Current Offset_Cal Base + 14C 16 Ch 07 Current Off
HP E1418A, Calibration Control Register The Calibration Control Register sets and reports calibration conditions. Address Base + 08 16 Bit 15 14 13 12 111009080706050403020100 READ Cal Bus En A/D Bsy Cal Mode Cal Mux En Cal Mux Chan Address A/D Reading Value WRITE Cal Bus En A/D Trg Cal Mode Sel Cal Mux En Cal Mux Chan Address A/D Scale Unused READ Cal Bus En: A one (1) in this field indicates the cal bus is connected. A zero (0) in this field indicates the cal bus is not connected. This bit reflects the state of the last write to Cal Bus En field. A
HP E1418A, wiring, 23–24 TEST Subsystem, 100–102 TEST:NUMBer?, 100 TEST:TST[:RESults]?, 101 *TST?, 102 *TRG, 106 Trigger channels, 103 control register, 134, 136 external, 54 external connections, 35 idle state, 79 ignored interrupt condition, 137 immediate, 54 process, 55 query current status, 78 setting, 54–55 software, 54 source, querying, 104 source, setting, 104 status for channels, 139 system, ABORt command, 62 system, INITiate command, 79 system, TRIGger commands, 103–104 VXIbus backplane, 54, 8
HP E1418A, CALibrationn:CONFigure:VOLTage? CALibrationn:CONFigure:VOLTage? configures the channel for voltage mode calibration and returns a 0 or 1 to indicate the channel’s readiness for calibration. Parameters Parameter Name Parameter Type Range of Values Default CALibration n keyword 1 to 8 or 1 to 16 1 Returns: an unsigned 16-bit integer (uint16). 1 = ready, 0 = not ready. Comments • In the keyword, CALibrationn, the valid range of n is: 1 to 8 for E1418A, E1418A Option 002 1 to 16 for E1418A Option 001, E1418A Option 003. Values of n outside these ranges will generate an error. • This command is used together with the CALibrationn:VALue:VOLTage? query to perform voltage
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