Guildline 7810 User manual

OPERATOR MANUAL
For The
Model 7810
Transconductance Amplifier
www.guildline.com
NOTICE
The contents and information contained in this manual are proprietary to
Guildline Instruments Limited. They are to be used only as a guide to the
operation and maintenance of the equipmentwith which this manual was issued
and may not be duplicated or transmitted by any means, either in whole or in
part, without the written permission of Guildline Instruments Limited.
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TABLE OF CONTENTS
1. INTRODUCTION.......................................................................................................1-1
1.1. SCOPE................................................................................................................................................................1-1
1.2. GENERAL DESCRIPTION............................................................................................................................1-1
1.3. WARRANTY.....................................................................................................................................................1-2
1.4. TO OBTAIN WARRANTY SERVICE .........................................................................................................1-2
1.5. SPECIFICATIONS...........................................................................................................................................1-4
1.5.1. Output Current Ranges...................................................................................................................................1-4
1.5.2. Stability Over 10 Minute Interval..................................................................................................................1-4
1.5.3. Accuracy Over 1 Year, 95 % Uncertainty.....................................................................................................1-5
1.5.4. General Specifications....................................................................................................................................1-6
2. INSTALLATION........................................................................................................2-1
2.1. INITIAL INSPECTION...................................................................................................................................2-1
2.2. POWER REQUIREMENTS...........................................................................................................................2-1
2.3. PRELIMINARY SETUP POCEDURE .........................................................................................................2-1
2.4. WARNING: .......................................................................................................................................................2-2
3. MANUAL OPERATION ............................................................................................3-1
3.1. FRONT PANEL................................................................................................................................................3-1
3.1.1. Touch Screen..................................................................................................................................................3-1
3.1.2. USB Interface Bus..........................................................................................................................................3-1
3.1.3. Input................................................................................................................................................................3-2
3.1.6. Guard ..............................................................................................................................................................3-3
3.2. REAR PANEL...................................................................................................................................................3-4
3.2.1. Power Entry....................................................................................................................................................3-4
3.2.2. GPIB Interface Bus ........................................................................................................................................3-4
3.2.3. USB Interface Bus..........................................................................................................................................3-5
3.3. FRONT PANEL TOUCH SCREEN OPERATION.....................................................................................3-5
3.4. MAIN SCREEN ................................................................................................................................................3-6
3.5. SETUP SCREEN...............................................................................................................................................3-8
3.8.1. Link To Common.........................................................................................................................................3-11
3.8.2. Circuit Common Connection To Output.....................................................................................................3-11
3.8.3. Input and Output Guard Strategy.................................................................................................................3-11

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4. THEORY OF OPERATION.......................................................................................4-1
4.1. INTRODUCTION.............................................................................................................................................4-1
4.2. OVERVIEW ......................................................................................................................................................4-1
4.3. INSTRUMENT CONTROL............................................................................................................................4-1
4.4. VOLTAGE INPUT CIRCUIT ........................................................................................................................4-2
4.5. COMPLIANCE VOLTAGE DISPLAY ........................................................................................................4-2
4.6. SIGNAL FREQUENCY and INPUT VOLTAGE DISPLAY.....................................................................4-2
4.7. OVERLOAD DETECTION and PROTECTION........................................................................................4-2
5. MAINTENANCE AND TROUBLESHOOTING.........................................................5-1
5.1. PERIODIC MAINTENANCE.........................................................................................................................5-1
5.2. TROUBLESHOOTING...................................................................................................................................5-1
5.3. PERFORMANCE VERIFICATION AND CALIBRATION.....................................................................5-2
5.3.1. Test Equipment Required...............................................................................................................................5-2
5.3.2. DC Accuracy And Stability Verification and Calibration.............................................................................5-2
5.3.3. Procedural Steps For DC Current Verification..............................................................................................5-3
5.3.4. Procedural Steps For AC Current Verification..............................................................................................5-6
6. REMOTE CONTROL................................................................................................6-1
6.1. INTERFACES...................................................................................................................................................6-1
6.2. IEEE-488 (GPIB) INTERFACE .....................................................................................................................6-1
6.2.1. Controller........................................................................................................................................................6-2
6.2.2. IEEE-488 Responses......................................................................................................................................6-2
6.2.3. Interconnecting Cable And IEEE-488 Connector.........................................................................................6-2
6.2.4. Typical System...............................................................................................................................................6-2
6.2.5. Address And Talk/Listen Selection...............................................................................................................6-3
6.2.6. IEEE-488 Electrical Interface ........................................................................................................................6-3
6.2.7. IEEE-488 Input Buffering..............................................................................................................................6-5
6.2.8. IEEE-488 Output Buffering...........................................................................................................................6-5
6.2.9. IEEE-488 Deadlock........................................................................................................................................6-5
6.3. RS-232C INTERFACE.....................................................................................................................................6-5
6.3.1. RS-232C Responses.......................................................................................................................................6-6
6.4. COMMAND LANGUAGE..............................................................................................................................6-6
6.4.1. General Syntax For Commands.....................................................................................................................6-6
6.4.2. General Syntax For Numbers.........................................................................................................................6-7

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6.5. REMOTE AND LOCAL OPERATION........................................................................................................6-8
6.5.1. Local...............................................................................................................................................................6-8
6.5.2. Local With Lockout .......................................................................................................................................6-8
6.5.3. Remote............................................................................................................................................................6-8
6.5.4. Remote With Lockout....................................................................................................................................6-8
6.6. PROGRAMMING COMMAND SUMMARY .............................................................................................6-9
6.7. REMOTE COMMANDS...............................................................................................................................6-11
6.7.1. *CLS - Clear Status Command....................................................................................................................6-11
6.7.2. *ESE <u> - Set Event Status Enable Register.............................................................................................6-11
6.7.3. *ESE? - Event Status Enable Query............................................................................................................6-11
6.7.4. *ESR? - Event Status Register Query..........................................................................................................6-11
6.7.5. *IDN? - Identification Query.......................................................................................................................6-13
6.7.6. *OPC - Operation Complete........................................................................................................................6-14
6.7.7. *OPC? - Operation Complete Query...........................................................................................................6-14
6.7.8. *OPT? - Report Available Options..............................................................................................................6-14
6.7.9. *RST - Device Reset....................................................................................................................................6-14
6.7.10. *SRE <u> - Service Request Enable Command ....................................................................................6-15
6.7.11. *SRE? - Service Request Enable Query.................................................................................................6-15
6.7.12. *STB? - Status Byte Query.....................................................................................................................6-15
6.7.13. *TST? - Query Results Of Self Test.......................................................................................................6-15
6.7.14. *TRG - Group Execute Trigger..............................................................................................................6-15
6.7.15. Date? - Display The 7810 Internal Date.................................................................................................6-16
6.7.16. DER? - Device Error Register ................................................................................................................6-16
6.7.17. Operate – Set The Operation State..........................................................................................................6-17
6.7.18. Operate? - Display The Current Operation State....................................................................................6-18
6.7.19. Range - Select Output Current Range.....................................................................................................6-18
6.7.20. Range? - Display The Currently Selected Range...................................................................................6-18
6.7.21. SInce? - Display The Time The 7810 Was Last Reset...........................................................................6-19
6.7.22. Serial Number - Set The 7810 Serial Number........................................................................................6-19
6.7.23. TErse - Turn Off Verbose Mode.............................................................................................................6-19
6.7.24. UPtime? - Display How Long The 7810 Has Been Running................................................................6-19
6.7.25. VErbose - Set Verbose Mode..................................................................................................................6-20
6.7.26. Volt - Select The Input Voltage Range...................................................................................................6-20
6.7.27. Volt? - Display The Current Input Voltage Range.................................................................................6-20
6.7.28. Programming Hints.................................................................................................................................6-20

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LIST OF FIGURES
FIGURE 1-1 : MODEL 7810..........................................................................................................................................1-1
FIGURE 3-1 : FRONT PANEL GUILDLINE 7810....................................................................................................3-1
FIGURE 3-2 : INPUT TERMINALS............................................................................................................................3-2
FIGURE 3-3 : REAR PANEL GUILDLINE 7810.......................................................................................................3-4
FIGURE 4-1 : MODEL 7810 BLOCK DIAGRAM.....................................................................................................4-3
FIGURE 5-1 : VERIFICATION TEST SET-UP.........................................................................................................5-2
FIGURE 5-2: INPUT TERMINALS............................................................................................................................5-3
FIGURE 6-1 : EVENT STATUS BIT OPERATION................................................................................................6-10

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LIST OF TABLES
TABLE 2-1 : LINE CORD WIRING ............................................................................................................................2-1
TABLE 5-1 : TROUBLESHOOTING GUIDE............................................................................................................5-1
TABLE 5-2 : REFERENCE CURRENT SHUNT SELECTION..............................................................................5-3
TABLE 5-3 : POSITIVE DC VERIFICATION VALUES.........................................................................................5-5
TABLE 5-4 : NEGATIVE DC VERIFICATION VALUES.......................................................................................5-5
TABLE 5-5 : 100 KHZ AC VERIFICATION VALUES ............................................................................................5-7
TABLE 5-6 : 1 KHZ AC VERIFICATION VALUES ................................................................................................5-7
TABLE 5-7 : 10 KHZ AC VERIFICATION VALUES ..............................................................................................5-8
TABLE 5-8 : 30 KHZ AC VERIFICATION VALUES ..............................................................................................5-8
TABLE 5-9 : 100 KHZ AC VERIFICATION VALUES............................................................................................5-8
TABLE 6-1 : IEEE-488 DEVICE CAPABILITIES...................................................................................................6-3
TABLE 6-2 : IEEE-488 PIN DESIGNATIONS..........................................................................................................6-4
TABLE 6-3 : RS232 PIN DESIGNATIONS................................................................................................................6-6
TABLE 6-4 : REMOTE/LOCAL STATE TRANSITIONS .....................................................................................6-9
TABLE 6-5 : EVENT STATUS REGISTER............................................................................................................6-12
TABLE 6-6 : STATUS BYTE REGISTER...............................................................................................................6-13
TABLE 6-7 : DEVICE ERROR REGISTER ...........................................................................................................6-17

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Section 1
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1. INTRODUCTION
1.1. SCOPE
This manual contains operation procedures, technical specifications, design descriptions,
maintenance instructions, and setup diagrams for the Guildline Instruments Model 7810
Transconductance Amplifier.
1.2. GENERAL DESCRIPTION
The Model 7810 Transconductance Amplifier is a low uncertainty / high accuracy transconductance
amplifier with excellent long term and short term stability. The 7810 provides calibrated currents
up to 100 A over a specified range from DC to 100 kHz, and uncalibrated currents up to 200 kHz.
The input accepts voltages in the range of 0 to 5 V RMS. Six output current ranges source currents
from 5 mA to 100 A full scale with a 7.5 Vrms compliance voltage
The 7810 is manually controllable through an integrated colour touch screen or may be automatically
controlled via integrated IEEE 488.2 and USB interfaces except for the main power ON/OFF switch.
The 7810 operates on line power with voltages from 110, 115, 120, 220, or 240 VAC ± 10 %; and
at 50 Hz or 60 Hz ±5 %.
Figure 1-1 : Model 7810

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1.3. WARRANTY
Each Model 7810 Transconductance Amplifier provided includes a two (2) year warranty in which
Guildline Instruments warrants that the unit is free from defects in material, workmanship,
manufacturing, and design and will perform to or exceed specifications, if operated properly, for the
duration of the two (2) year warranty coverage. This warranty only extends to the intended original
purchaser.
Guildline will repair or replace any failed unit under warranty within a reasonable length of time at
no additional cost to the customer. The repair action will correct any deficiencies so units shall meet
all specifications. If a replacement unit is provided, the replacement unit will assume the balance of
the warranty of the replaced unit. The unit will be calibrated with standards traceable to a NMI
source.
Guildline will be responsible for returning warranty standards to the owner and will bear
transportation costs from the repair centre back to the user. It will be the customer’s responsibility
for transportation costs for equipment returned to Guildline for repair or replacement. Warranty
repairs will be provided in Canada, but Guildline maintains a US address for warranty shipments for
US Customers.
Guildline does not provide warranty service or file claims due to shipping damage. Customers
are responsible for properly packaging instruments and insuring instruments, to account for
the possibility of shipping damage.
These warranties will not, in any way, be voided by any customer performed routine maintenance
accomplished in accordance with Guildline's service procedures (e.g. replace fuses, adjust instrument
in accordance with calibration instructions, cleaning, etc.).
1.4. TO OBTAIN WARRANTY SERVICE
Before returning any warranty equipment to Guildline Service Center, a Return Authorization
Number (RMA) and shipping instructions from Guildline Instruments is required. Guildline Service
Center information is as follows:
The phone number in the USA and Canada to obtain Product Support, Calibration Service or
Replacement Parts is [phone].
To Contact Guildline Instruments, the following information is provided.
USA and Canada Telephone: [phone]
USA and Canada Fax: [phone]
Outside US and Canada Telephone: + [0] [1] 613 283-3000
Outside US and Canada Fax: + [0] [1] 613 283-6082

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You can also contact Guildline Instruments Limited via their Email or Website.
Email is: [e-mail]
Website is: www.guildline.com
Any 7810 Transconductance Amplifier delivered that has a product/design or safety defect which
prevents the unit from meeting contract specification requirements will be modified by Guildline to
eliminate the defect and ensure all specifications are met. All modifications including parts and
labour will be done at no cost to the customer.

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1.5. SPECIFICATIONS
1.5.1. Output Current Ranges
Current Range
(Full Scale) Output Current (0 % to 100 % of Full Scale) Transconductance (Siemens)
5 mA
0 to 5 mA
1 m
50 mA
0 to 50 mA
10 m
500 mA
0 to 500 mA
100 m
5 A
0 to 5 A
1
50 A
0 to 50 A
10
100 A
0 to 100 A
100
1.5.2. Stability Over 10 Minute Interval
Frequency (Hz)
± % of Reading + % of Range
(0 % to 100 % of Full Scale)
± % of Reading
(100 % to 200 % of Full Scale)
DC 0.002 + 0.0015 0.004
10 to 10 k 0.005 + 0.004 0.01
10 k to 100 k 0.01 + 0.008 0.02
100 k to 2 M Unspecified Unspecified

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1.5.3. Accuracy Over 1 Year, 95 % Uncertainty
Accuracy (12 Months) ± (% of Reading + % of Range) 1 Hour Warm-up
Selected Range

100 A
50 A
5A
Output Currents 
50 A to 100 A
5 A to 50 A
0.5 A to 5 A
DC
± (0.02 + 0.015)
± (0.02 + 0.015)
± (0.02 + 0.015)
10 Hz – 10 kHz
± (0.05 + 0.04)
± (0.05 + 0.04)
±(0.05 + 0.04)
10 kHz – 30 kHz
± (0.10 + 0.08)
± (0.10 + 0.08)
± (0.10 + 0.08)
30 kHz – 50 kHz
± (0.15 + 0.12)
± (0.15 + 0.12)
± (0.15 + 0.12)
50 kHz – 100 kHz
± (0.30 + 0.24)
± (0.30 + 0.24)
±( 0.30 + 0.24)
Accuracy (12 Months) ± (% of Reading + % of Range) 1 Hour Warm-up
Selected Range

500 mA
50 mA
5 mA
Output Currents

5 mA to 500 mA
5 mA to 50 mA
0.5 mA to 5 mA
DC
± (0.02 + 0.015)
± (0.02 + 0.015)
± (0.02 + 0.015)
10 Hz – 10 kHz
± (0.05 + 0.04)
± (0.05 + 0.04)
± (0.05 + 0.04)
10 kHz – 30 kHz
± (0.10 + 0.08)
± (0.10 + 0.08)
± (0.10 + 0.08)
30 kHz – 50 kHz
± (0.15 + 0.12)
± (0.15 + 0.12)
± (0.15 + 0.12)
50 kHz – 100 kHz
± (0.30 + 0.24)
± (0.30 + 0.24)
± (0.30 + 0.24)

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1.5.4. General Specifications
Compliance Voltage
Maximum 9 Vrms, 9 VDC
Noise
± 0.05 % of Current Range in a Band from DC to 100 kHz
Unspecified from 100 kHz to 200 kHz
Manual Operation
Color Touch Screen
Remote Operation
IEEE 488.2
SCPI Based Instructions
Dimensions (H x W x D)
15" x 20.7" x 30"
381 mm x 526 mm x 762
Weight
75 lbs. (34.1 kg)
Operating Temperature Range
22.8 °C ± 3.3 °C
73.0 °F ± 5.9 °F
Operating Humidity Range
20 % to 50 % RH
Storage Temperature Range
-20 °C to +60 °C
-4 °F to +140 °F
Storage Humidity Range
15 % to 80 % RH
Warm Up Time
1 Hour
Output Connectors
5 - 100 A (LC Female)
0 - 5 A (Type N Female)
Power Supply Requirements 110, 115, 120, 220, or 240
VAC ± 10 % 50 Hz or 60 Hz ±5 %
Mounting Provisions
Rack Mountable or Bench Top

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2. INSTALLATION
2.1. INITIAL INSPECTION
This instrument was carefully inspected both mechanically and electrically before shipment. It
should be free of marks and scratches and in perfect electrical order upon receipt.
Unpack the instrument and retain the shipping container until the instrument has been inspected for
damage in shipment. If in-shipment damage is observed, notify the carrier and obtain authorization
for repairs before returning the instrument to the factory.
The 7810 is shipped with the following accessories and spare parts:
•Technical Manual (TM7810)
•110 to 230 Volt, 15 A detachable line cord
•Rack Mounting Kit
•Calibration Certificate
2.2. POWER REQUIREMENTS
The instrument is shipped with a three wire 15 A, 110 to 230 Volt North American line cord. The
7810 is designed for use with AC power sources between 110 to 250 Volts rated at 15 A. The
detachable line cord is equipped with a NEMA 6-15 end for connection to the power source.
Where the supplied line cord does not match the power outlet receptacle, the plug may be removed
from the line cord and replaced with a grounded plug of the correct type. The plug should be wired
as shown in Table 2-1.
Table 2-1 : Line Cord Wiring
2.3. PRELIMINARY SETUP POCEDURE
Upon completion of inspection the instrument should be placed on a solid bench top capable of
holding the weight of the instrument.
Cord Wire Colour Potential Voltage
Brown Line
Blue Neutral
Green/Yellow Ground (Earth)

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2.4. WARNING:
BEFORE SWITCHING ON THIS INSTRUMENT, THE PROTECTIVE TERMINAL OF
THIS INSTRUMENT MUST BE CONNECTED TO A PROTECTIVE EARTH CONTACT.
THE POWER LINE CORD SUPPLIED WILL PROVIDE THE PROTECTIVE
GROUNDING WHEN INSERTED INTO A SOCKET OUTLET PROVIDED WITH AN
EARTH CONTACT.
THE PROTECTIVE ACTION MUST NOT BE NEGATED BY THE USE OF AN
EXTENSION CORD OR ADAPTOR WITHOUT A PROTECTIVE GROUNDING
CONDUCTOR.

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3. MANUAL OPERATION
3.1. FRONT PANEL
Figure 3-1 : Front Panel Guildline 7810
3.1.1. Touch Screen
The touch screen is used for configuration of the 7810 ranges, control of output current and
monitoring purposes. Refer to section 3.3. for touch screen displays and functions.
3.1.2. USB Interface Bus
The Type A connector is used to connect the 7810 to external devices such as memory
sticks, computer mice/keyboard or USB communication adapters.

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3.1.3. Input
The input consists of: a four terminal voltage input to drive the 7810, an active guard that
can be used to drive the input connection cable shields and a circuit common connection.
NOTE that connecting a device with an active guard to the 7810 guard will damage the
7810.
Figure 3-2 : Input Terminals
V+ Input - the V+ Input terminal provides the connection for source input voltage "V+"
connection.
V- Input - the V- Input terminal provides the connection for the source input voltage "V-"
connection.
HI Input - the HI Input terminal provides the connection for the source input voltage "Sense
+".
LO Input - the LO Input terminal provides the connection for the source input voltage
"Sense -".
Guard – this Guard input terminal provides a buffered output voltage signal that has the
same magnitude and phase as the input source voltage. The Guard input terminal can be
used to drive the guard or shield conductor in the interconnect cable from the input voltage
source.
NOTE: If using this Guard, the shield must not be attached at the input voltage source
and/or the connected device must not have an active Guard or the 7810 can be damaged.
Ground – the Ground symbol terminal provides a connection to the internal input circuit
common or ground and is isolated from instrument safety ground.