Technical Specifications
Designed and built in Europe by:
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and
reserves the right to alter specifications without prior notice.
82100-0058 Iss. 2A
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon. Cambs. PE29 7DR England
Tel: +44 (0)1480 412451 Fax: +44 (0) 1480 450409
Email: info@aimtti.com Web: www.aimtti.com
AIM & THURLBY THANDAR INSTRUMENTS
1705
High resolution bench/portable true RMS multimeter
Dual display, dual measurement
ACCURACY (Main Measurement Functions)
Accuracies apply for 1 year, 19oC to 25oC. Temperature coefficient out-
side these limits is <0.1 x quoted range accuracy per oC
DC Volts
100mV 0.06% ±3 dig. 10µV
Input impedance 10MWnominal
Max. input 1kV DC or AC pk
NMR: >60dB @ 50/60Hz
CMR: >90dB @ DC/50Hz/60Hz
1V 0.04% ±2 dig. 100µV
10V 0.06% ±2 dig. 1mV
100V 0.06% ±2 dig. 10mV
1000V 0.06% ±2 dig. 100mV
AC Volts (True RMS)
45Hz - 10kHz 10kHz - 20kHz 20kHz - 50kHz
100mV
0.2% ±20 dig.
1% ±20 dig. N/A 10µV
1V
0.2% ±20 dig.
1% ±50 dig. 100µV
10V 1% ±80 dig. 1mV
100V 1% ±80 dig. 10mV
750V N/A 100mV
1V, 10V, 100V ranges are <1dB down at 100kHz. AC accuracies apply
above 1,000 counts. Additional error at crest factor = 3 is typically 0.2%.
Input impedance = 1MWnominal. Max. input = 750V rms, 1kV pk.
1kWunbalanced CMR = >60dB at DC/50Hz/60Hz.
Resistance
100W0.1% ±3 dig. 10mW
Max. input 300V DC or AC rms
any range.
Max. open circuit voltage 4V
1000W0.08% ±2 dig. 100mW
10kW0.09% ±2 dig. 1W
100kW0.09% ±2 dig. 10W
1000kW0.12% ±2 dig. 100W
10MW0.5% ±2 dig. 1kW
20MW0.5% ±2 dig. 10kW
DC Current
1mA 0.1% ±3 dig. 0.1µA Max. input 500mA
Voltage burden <250mV
100mA 0.1% ±3 dig. 10µA
10A (up to 1A) 0.3% ±3 dig. 1mA
Max. input 10A
Voltage burden <500mV
10A (up to 5A) 1.0% ±4 dig. 1mA
10A (up to 10A) 3% ±10 dig. 1mA
AC Current (True RMS)
1mA 0.35% ±20 dig. 0.1µA Max. input 500mA
Voltage burden <250mV
100mA 0.35% ±20 dig. 10µA
10A (up to 1A) 0.5% ±20 dig. 1mA
Max. input 10A
Voltage burden <500mV
10A (up to 5A) 1.2% ±20 dig. 1mA
10A (up to 10A) 3% ±20 dig. 1mA
Accuracies apply over 45Hz to 10kHz for readings above 1000 counts.
Additional error at crest factor = 3 is typically 0.2%.
Frequency
100Hz
0.01% ±1 dig.
0.01Hz Sensitivity better than
30mV (100mV range),
better than 10% of
range (other Vac & Iac
ranges)
1000Hz 0.1Hz
10kHz 1Hz
100kHz 10Hz
Capacitance
10nF
2% ±5 dig.
10pF
Scale length 1200
counts
100nF 100pF
1µF 1nF
10µF 10nF
100µF 5% ±5 dig. 100nF
OTHER MEASUREMENT FUNCTIONS
Continuity
Selects 1000Wrange and sounds audible tone for impedance <10W.
Sampling rate 20/sec. Max. input 300V DC or AC rms.
Diode Test
Displays voltages up to 1.2V at a test current of 0.5mA. Max. open cir-
cuit voltage 4V. Max. input 300V DC or AC rms.
AC + DC Volts, AC + DC Current
Displays the True RMS value of the ac and dc components of the wave-
form. Accuracy is equal to the sum of the ac and dc accuracies for the
selected range.
DISPLAY
Display Type: High contrast LCD. Main display 4½ digits 17mm high,
secondary display 5 digits 10mm high.
Scale Length: 4¼ digits (12,000 counts) in most modes.
Annunciators: LCD - annunciators for all ranges, functions and pro-
gram modes.
Reading Rate: Varies with function, maximum 4/sec.
Overrange: Display flashes 12000 if input too great for range.
Overflow: Displays -Or- if calculated result overflows display.
COMPUTING FUNCTIONS
Null (Relative) Stores current reading and subtracts it from future
readings.
Ohms Null: Additional non-volatile function for nulling test lead re-
sistance.
Hold: Reading is frozen.
T-Hold: Reading is frozen when stable.
dB: Displays measurement in dBm relative to 600Wor
other user-entered impedance.
AC plus DC: The RMS value of the ac plus dc parts of the signal is
calculated and displayed.
% Deviation: Displays % deviation from entered reference value.
Ax+b: Linear scaling of results, with offset.
Limits.. Reading displayed with HI, LO, or PASS with respect
to user-defined high and low limits.
Min/Max: Minimum and maximum reading stored.
Power: Calculates V2/R and displays in Watts with respect to a
user-defined impedance.
VA: Calculates and displays Volts x Amps.
Data Logger: Manual or automatic storage of 100 measurements.
Storage interval 1s to 9999s, manually from keyboard,
or by remote contact closure or interface command.
INTERFACES
RS232: Baud rates 2400, 9600 or 19200. Complies fully with
the ARC (Addressable RS232 Chain) interface stan-
dard. Address selectable from the front panel.
GPIB (option): The 1705 can be specified with an IEEE-488 interface.
This version operates only from AC mains.
POWER REQUIREMENTS
AC Input: 115/230 Volts AC nominal 50/60Hz by internal adjust-
ment; 5VA max.
Batteries: 6 x C cells, disposable or rechargeable.
Battery Life: >150 hours from alkaline disposable cells,
typically 70 hours from rechargeable cells.
GENERAL
Operating Range: +50oC to + 40oC, 20% to 80% RH
Storage Range: -20oC to + 60oC
EMC & Safety: Complies with EN61326 and EN61010-1 respectively
Size and Weight: 260(W) x 88(H) x 235(D)mm, excl. handle/feet. 2.0kg.
CYAN MAGENTA YELLOW BLACK
High accuracy, resolution & bandwidth
performance beyond the capability of hand-helds
Dual measurement
The 1705 can measure and display two
signalssimultaneously. Thesecanbetwo
parameters of one signal (e.g. ac volts &
dc volts) or two signals applied to different
sockets (e.g. ac volts & ac current).
Main
display Secondary dis-
play Signal
inputs
dc Volts ac Volts 1
dc Volts ac Amps 2
ac Volts Frequency 1
ac Volts dc Amps 2
dc Amps ac Amps 1
ac Amps ac Volts 2
High resolution & accuracy
The 1705 is a 4¼ digit meter with a scale
length of 12,000 counts and a resolution
of 10µV, 10mΩand 0.1µA.
CombinedwithahighbasicdcVaccuracy
of 0.04%, it provides measurements that
are an order of magnitude better than
most hand-held DMMs.
Auto or manual ranging
The 1705 offers fully automatic ranging
onall functions. Alternatively,rangescan
be selected manually.
Unlike other meters, the range value can
be clearly shown on the secondary dis-
playavoidinganypossibilityofconfusion.
Mains or battery operation
The 1705 can operate either from ac
mains or from batteries (disposable or re-
chargeable). In battery mode it can oper-
ate for up to 80 hours.
●
High performance 12,000 count autoranging DMM
●
High accuracy and resolution: 0.04%, 10µV, 10m
●
Dual display and dual measurement technology
✱
●
Large and clear LCD (17mm digits) with annunciators
✱✱
●
True RMS ac functions; Frequency and Capacitance
●
Wide range of computing functions, e.g. Ax + b
●
100 step data-logger, timed or triggered logging
●
RS232 interface standard, GPIB interface optional
●
Mains and battery operation as standard
Smart functions
for added power
dB measurements
AC voltages can be displayed in dB as
well as voltage Built-in zero reference
scaling enables voltages to be displayed
in dBm relative to any required imped-
ance.
Linear scaling with offset
Thisfunctionenablesareadingtobemul-
tiplied by a scale factor (A) and for an off-
set (b) to be added or subtracted.
This means, for example, that the electri-
cal output of a transducer can be scaled
togive adirect readoutof thephysical pa-
rameter e.g. temperature or weight. It is
particularly useful with 4-20mA current
loops.
Limits comparison
This function enables the reading to be
tested against high and low limits set by
the user. The display then shows HI, LO
or PASS in addition to the measurement
result.
Percentage deviation ( %)
Thisfunctionenables themetertodisplay
the percentage amount by which the
reading differs from a nominal value cho-
sen by the user. It is invaluable for meas-
uring tolerance or stability.
Min-Max storage
The Min-Max function stores the highest
and lowest values of a set of readings.
This facility has many uses such as
checking for power supply glitches, re-
cording peak temperature excursions
and avoiding ‘missed’ readings when us-
ing the Logger function.
Wide true RMS ac
The 1705 provides True RMS ac response
which gives accurate measurements re-
gardless of the waveform shape.
The wide bandwidth attenuator provides
high accuracy within the audio band and
gives extended response to avoid errors
when measuring switching waveforms.
Measurements are normally ac coupled
but,whenrequired,thetrue RMSvalueof
theacplusdccomponentscanbeshown.
Frequency & capacitance
The 1705 offers high accuracy frequency
measurement (better than 0.01%) from
10Hz to 120kHz. It uses a reciprocal
counting technique to give up to 0.01Hz
resolution at 10 readings per second.
The 1705 also incorporates capacitance
measurementinfourrangesupto120µF.
More information
The 1705 has a number of powerful
built-in functions designed to make life
easier for the user. Most of these func-
tionsmakeuseofthedualdisplaystopro-
vide extra information.
Function Main
display Secondary
display
dB dBm ac Volts
Null nulled value raw value
VA dc Amps Volts x Amps
Limits Resistance Hi/Lo/Pass
Ax + B dc Volts Weight
Tracking ‘hold’
The T-Hold function freezes the display
everytime a newbut stablereadingis de-
tected. This avoids the problem of trying
towatch thetest pointsand thedisplay si-
multaneously. Alternatively, a simple
Hold function is also available.
Relative measurement
The null function stores the current read-
ing and subtracts it from future readings
giving a ‘relative’ display. The nulled and
normalreadingscanbeviewedtogether.
A separate Ω-null function retains an in-
dependent null value for resistance
measurements enabling test lead resis-
tance to be permanently nulled out.
Power measurement
in Watts or VA
In addition to dBs, the 1705 can measure
power in Watts or VA.
For resistive loads the Watts function cal-
culates V2/R for any load resistance be-
tween 1Ωand 10kΩ, a particularly useful
function for audio measurements.
The VA function makes use of the dual
measurement capability and displays the
product of voltage and current.
Automatic data logging
The 1705 can store up to 100 readings at
any required time interval from 1 reading
persecondupto1readingevery3hours.
Asimplerecallsequenceallowstheread-
ings to be scrolled onto the display when-
ever required. Alternatively results can
be downloaded using RS232 or GPIB.
Asaresult,tedioustimerelatedmeasure-
ment sequences can be handled auto-
matically without disrupting your work.
Manual storage of readings is also avail-
able eliminating the need for paper and
pencil when making a series of measure-
ments. Storage can also be triggered
from contact closure or the digital inter-
faces.
Full bus control
via RS-232 or GPIB
The 1705 has an RS-232 interface as
standard which can be used for remote
controlandread-backofmeasurements.
As well as operating as a conventional
RS-232 interface, it can also be used in
addressable mode whereby up to 32 in-
struments can be linked to one PC serial
port as part of a TTi ‘ARC’ system. A
GPIB interface is available as an option.
The1705usesatruedualmeasurement, dual displaytechniquelicensedunderU.S.Patent
No.4825392. Lowcostmetersincorporatingtwodisplaysdonothavethesamefunctionality.
Screen illustrations are at approximately 70% of actual size.
Dual displays & dual measurement
‘smart’ functions, RS232 or GPIB interfaces
CYAN MAGENTA YELLOW BLACK
Dual display system
The 1705 has both a main display and a
secondary display. The two displays can
be used for a variety of purposes:
●
To show the selected range in addition
tothemeasurementunits(e.g.100mAdc).
●
Todisplay ameasurement intwo differ-
ent units (e.g. ac volts and dBm).
●
To display the result of a calculated
function(e.g. svalueand%deviation).
●
To measure and display two parame-
tersofonesignal(e.g.acanddcvolts).
✱
●
To measure and display two different
signals (e.g. ac volts and dc current).
✱
Closed case calibration
The1705storesitscalibrationconstantsin
protectedmemoryandcanberecalibrated
without ever opening the case.
Full safety protection
The 1705 incorporates extensive protection
against damage from accidental overloads
on all ranges including 10 Amps.
It also meets the stringent safety require-
ments of EN61010-1 for measurements
up to 1kV (Cat. I) or 600V (Cat. II).
High accuracy, resolution & bandwidth
performance beyond the capability of hand-helds
Dual measurement
The 1705 can measure and display two
signalssimultaneously. These can betwo
parameters of one signal (e.g. ac volts &
dc volts) or two signals applied to different
sockets (e.g. ac volts & ac current).
Main
display Secondary dis-
play Signal
inputs
dc Volts ac Volts 1
dc Volts ac Amps 2
ac Volts Frequency 1
ac Volts dc Amps 2
dc Amps ac Amps 1
ac Amps ac Volts 2
High resolution & accuracy
The 1705 is a 4¼ digit meter with a scale
length of 12,000 counts and a resolution
of 10µV, 10mΩand 0.1µA.
CombinedwithahighbasicdcVaccuracy
of 0.04%, it provides measurements that
are an order of magnitude better than
most hand-held DMMs.
Auto or manual ranging
The 1705 offers fully automatic ranging
onall functions. Alternatively,rangescan
be selected manually.
Unlike other meters, the range value can
be clearly shown on the secondary dis-
playavoidinganypossibilityofconfusion.
Mains or battery operation
The 1705 can operate either from ac
mains or from batteries (disposable or re-
chargeable). In battery mode it can oper-
ate for up to 80 hours.
●
High performance 12,000 count autoranging DMM
●
High accuracy and resolution: 0.04%, 10µV, 10m
●
Dual display and dual measurement technology
✱
●
Large and clear LCD (17mm digits) with annunciators
✱✱
●
True RMS ac functions; Frequency and Capacitance
●
Wide range of computing functions, e.g. Ax + b
●
100 step data-logger, timed or triggered logging
●
RS232 interface standard, GPIB interface optional
●
Mains and battery operation as standard
Smart functions
for added power
dB measurements
AC voltages can be displayed in dB as
well as voltage Built-in zero reference
scaling enables voltages to be displayed
in dBm relative to any required imped-
ance.
Linear scaling with offset
Thisfunctionenablesareadingtobemul-
tiplied by a scale factor (A) and for an off-
set (b) to be added or subtracted.
This means, for example, that the electri-
cal output of a transducer can be scaled
togive adirect readoutof thephysical pa-
rameter e.g. temperature or weight. It is
particularly useful with 4-20mA current
loops.
Limits comparison
This function enables the reading to be
tested against high and low limits set by
the user. The display then shows HI, LO
or PASS in addition to the measurement
result.
Percentage deviation ( %)
Thisfunctionenables themetertodisplay
the percentage amount by which the
reading differs from a nominal value cho-
sen by the user. It is invaluable for meas-
uring tolerance or stability.
Min-Max storage
The Min-Max function stores the highest
and lowest values of a set of readings.
This facility has many uses such as
checking for power supply glitches, re-
cording peak temperature excursions
and avoiding ‘missed’ readings when us-
ing the Logger function.
Wide true RMS ac
The 1705 provides True RMS ac response
which gives accurate measurements re-
gardless of the waveform shape.
The wide bandwidth attenuator provides
high accuracy within the audio band and
gives extended response to avoid errors
when measuring switching waveforms.
Measurements are normally ac coupled
but,whenrequired,thetrue RMSvalueof
theacplusdccomponentscanbeshown.
Frequency & capacitance
The 1705 offers high accuracy frequency
measurement (better than 0.01%) from
10Hz to 120kHz. It uses a reciprocal
counting technique to give up to 0.01Hz
resolution at 10 readings per second.
The 1705 also incorporates capacitance
measurementinfourrangesupto120µF.
More information
The 1705 has a number of powerful
built-in functions designed to make life
easier for the user. Most of these func-
tionsmakeuseofthedualdisplaystopro-
vide extra information.
Function Main
display Secondary
display
dB dBm ac Volts
Null nulled value raw value
Power ac Volts V2/R
VA dc Amps Volts x Amps
Limits Resistance Hi/Lo/Pass
Ax + B dc Volts Weight
Tracking ‘hold’
The T-Hold function freezes the display
everytime a newbut stablereadingis de-
tected. This avoids the problem of trying
towatch thetest pointsand thedisplay si-
multaneously. Alternatively, a simple
Hold function is also available.
Relative measurement
The null function stores the current read-
ing and subtracts it from future readings
giving a ‘relative’ display. The nulled and
normalreadingscanbeviewedtogether.
A separate Ω-null function retains an in-
dependent null value for resistance
measurements enabling test lead resis-
tance to be permanently nulled out.
Power measurement
in Watts or VA
In addition to dBs, the 1705 can measure
power in Watts or VA.
For resistive loads the Watts function cal-
culates V2/R for any load resistance be-
tween 1Ωand 10kΩ, a particularly useful
function for audio measurements.
The VA function makes use of the dual
measurement capability and displays the
product of voltage and current.
Automatic data logging
The 1705 can store up to 100 readings at
any required time interval from 1 reading
persecondupto1readingevery3hours.
Asimplerecallsequenceallowstheread-
ings to be scrolled onto the display when-
ever required. Alternatively results can
be downloaded using RS232 or GPIB.
Asaresult,tedioustimerelatedmeasure-
ment sequences can be handled auto-
matically without disrupting your work.
Manual storage of readings is also avail-
able eliminating the need for paper and
pencil when making a series of measure-
ments. Storage can also be triggered
from contact closure or the digital inter-
faces.
Full bus control
via RS-232 or GPIB
The 1705 has an RS-232 interface as
standard which can be used for remote
controlandread-backofmeasurements.
As well as operating as a conventional
RS-232 interface, it can also be used in
addressable mode whereby up to 32 in-
struments can be linked to one PC serial
port as part of a TTi ‘ARC’ system. A
GPIB interface is available as an option.
The1705usesatruedualmeasurement, dual displaytechniquelicensedunderU.S.Patent
No.4825392. Lowcostmetersincorporatingtwodisplaysdonothavethesamefunctionality.
Screen illustrations are at approximately 70% of actual size.
Dual displays & dual measurement
‘smart’ functions, RS232 or GPIB interfaces
CYAN MAGENTA YELLOW BLACK
Dual display system
The 1705 has both a main display and a
secondary display. The two displays can
be used for a variety of purposes:
●
To show the selected range in addition
tothemeasurementunits(e.g.100mAdc).
●
Todisplay ameasurement intwo differ-
ent units (e.g. ac volts and dBm).
●
To display the result of a calculated
function(e.g. svalueand%deviation).
●
To measure and display two parame-
tersofonesignal(e.g.acanddcvolts).
✱
●
To measure and display two different
signals (e.g. ac volts and dc current).
✱
Closed case calibration
The1705storesitscalibrationconstantsin
protectedmemoryandcanberecalibrated
without ever opening the case.
Full safety protection
The 1705 incorporates extensive protection
against damage from accidental overloads
on all ranges including 10 Amps.
It also meets the stringent safety require-
ments of EN61010-1 for measurements
up to 1kV (Cat. I) or 600V (Cat. II).
Technical Specifications
Designed and built in Europe by:
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and
reserves the right to alter specifications without prior notice.
82100-0058 Iss. 2A
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon. Cambs. PE29 7DR England
Tel: +44 (0)1480 412451 Fax: +44 (0) 1480 450409
Email: info@aimtti.com Web: www.aimtti.com
AIM & THURLBY THANDAR INSTRUMENTS
1705
High resolution bench/portable true RMS multimeter
Dual display, dual measurement
ACCURACY (Main Measurement Functions)
Accuracies apply for 1 year, 19oC to 25oC. Temperature coefficient out-
side these limits is <0.1 x quoted range accuracy per oC
DC Volts
100mV 0.06% ±3 dig. 10µV
Input impedance 10MWnominal
Max. input 1kV DC or AC pk
NMR: >60dB @ 50/60Hz
CMR: >90dB @ DC/50Hz/60Hz
1V 0.04% ±2 dig. 100µV
10V 0.06% ±2 dig. 1mV
100V 0.06% ±2 dig. 10mV
1000V 0.06% ±2 dig. 100mV
AC Volts (True RMS)
45Hz - 10kHz 10kHz - 20kHz 20kHz - 50kHz
100mV
0.2% ±20 dig.
1% ±20 dig. N/A 10µV
1V
0.2% ±20 dig.
1% ±50 dig. 100µV
10V 1% ±80 dig. 1mV
100V 1% ±80 dig. 10mV
750V N/A 100mV
1V, 10V, 100V ranges are <1dB down at 100kHz. AC accuracies apply
above 1,000 counts. Additional error at crest factor = 3 is typically 0.2%.
Input impedance = 1MWnominal. Max. input = 750V rms, 1kV pk.
1kWunbalanced CMR = >60dB at DC/50Hz/60Hz.
Resistance
100W0.1% ±3 dig. 10mW
Max. input 300V DC or AC rms
any range.
Max. open circuit voltage 4V
1000W0.08% ±2 dig. 100mW
10kW0.09% ±2 dig. 1W
100kW0.09% ±2 dig. 10W
1000kW0.12% ±2 dig. 100W
10MW0.5% ±2 dig. 1kW
20MW0.5% ±2 dig. 10kW
DC Current
1mA 0.1% ±3 dig. 0.1µA Max. input 500mA
Voltage burden <250mV
100mA 0.1% ±3 dig. 10µA
10A (up to 1A) 0.3% ±3 dig. 1mA
Max. input 10A
Voltage burden <500mV
10A (up to 5A) 1.0% ±4 dig. 1mA
10A (up to 10A) 3% ±10 dig. 1mA
AC Current (True RMS)
1mA 0.35% ±20 dig. 0.1µA Max. input 500mA
Voltage burden <250mV
100mA 0.35% ±20 dig. 10µA
10A (up to 1A) 0.5% ±20 dig. 1mA
Max. input 10A
Voltage burden <500mV
10A (up to 5A) 1.2% ±20 dig. 1mA
10A (up to 10A) 3% ±20 dig. 1mA
Accuracies apply over 45Hz to 10kHz for readings above 1000 counts.
Additional error at crest factor = 3 is typically 0.2%.
Frequency
100Hz
0.01% ±1 dig.
0.01Hz Sensitivity better than
30mV (100mV range),
better than 10% of
range (other Vac & Iac
ranges)
1000Hz 0.1Hz
10kHz 1Hz
100kHz 10Hz
Capacitance
10nF
2% ±5 dig.
10pF
Scale length 1200
counts
100nF 100pF
1µF 1nF
10µF 10nF
100µF 5% ±5 dig. 100nF
OTHER MEASUREMENT FUNCTIONS
Continuity
Selects 1000Wrange and sounds audible tone for impedance <10W.
Sampling rate 20/sec. Max. input 300V DC or AC rms.
Diode Test
Displays voltages up to 1.2V at a test current of 0.5mA. Max. open cir-
cuit voltage 4V. Max. input 300V DC or AC rms.
AC + DC Volts, AC + DC Current
Displays the True RMS value of the ac and dc components of the wave-
form. Accuracy is equal to the sum of the ac and dc accuracies for the
selected range.
DISPLAY
Display Type: High contrast LCD. Main display 4½ digits 17mm high,
secondary display 5 digits 10mm high.
Scale Length: 4¼ digits (12,000 counts) in most modes.
Annunciators: LCD - annunciators for all ranges, functions and pro-
gram modes.
Reading Rate: Varies with function, maximum 4/sec.
Overrange: Display flashes 12000 if input too great for range.
Overflow: Displays -Or- if calculated result overflows display.
COMPUTING FUNCTIONS
Null (Relative) Stores current reading and subtracts it from future
readings.
Ohms Null: Additional non-volatile function for nulling test lead re-
sistance.
Hold: Reading is frozen.
T-Hold: Reading is frozen when stable.
dB: Displays measurement in dBm relative to 600Wor
other user-entered impedance.
AC plus DC: The RMS value of the ac plus dc parts of the signal is
calculated and displayed.
% Deviation: Displays % deviation from entered reference value.
Ax+b: Linear scaling of results, with offset.
Limits.. Reading displayed with HI, LO, or PASS with respect
to user-defined high and low limits.
Min/Max: Minimum and maximum reading stored.
Power: Calculates V2/R and displays in Watts with respect to a
user-defined impedance.
VA: Calculates and displays Volts x Amps.
Data Logger: Manual or automatic storage of 100 measurements.
Storage interval 1s to 9999s, manually from keyboard,
or by remote contact closure or interface command.
INTERFACES
RS232: Baud rates 2400, 9600 or 19200. Complies fully with
the ARC (Addressable RS232 Chain) interface stan-
dard. Address selectable from the front panel.
GPIB (option): The 1705 can be specified with an IEEE-488 interface.
This version operates only from AC mains.
POWER REQUIREMENTS
AC Input: 115/230 Volts AC nominal 50/60Hz by internal adjust-
ment; 5VA max.
Batteries: 6 x C cells, disposable or rechargeable.
Battery Life: >150 hours from alkaline disposable cells,
typically 70 hours from rechargeable cells.
GENERAL
Operating Range: +50oC to + 40oC, 20% to 80% RH
Storage Range: -20oC to + 60oC
EMC & Safety: Complies with EN61326 and EN61010-1 respectively
Size and Weight: 260(W) x 88(H) x 235(D)mm, excl. handle/feet. 2.0kg.
CYAN MAGENTA YELLOW BLACK
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon, Cambridgeshire PE29 7DR England (United Kingdom)
Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409
Email: info@aimtti.com Web: www.aimtti.com
Designed and built in Europe by:
Company name and product brands
Thurlby Thandar Instruments Ltd. (TTi) is one of Europe’s leading
manufacturers of test and measurement instruments.
Products have been sold under two brand names:
TTi and Aim.
In the future, however, the full product range will be branded Aim-TTi.
This changeover will be gradual and many products will continue to carry
the TTi or Aim brands for some time to come.
Web Addresses (URLs)
The preferred URL for obtaining information concerning Aim-TTi products
is:
www.aimtti.com (international customers)
Customers in the UK should use the URL:
www.aimtti.co.uk
Customers in the USA should use the URL:
www.aimtti.us
Note that previous URLs such as www.tti-test.com will continue to operate
for the time being.
Product Summary
Laboratory Power Supplies
Bench and system power supplies from 30 watts up to
1200 watts using linear, mixed-mode and PowerFlex
regulation technologies.
Waveform Generators
Analog and digital (DDS) function generators, true
arbitrary generators, arbitrary/function generators and
pulse generators.
Precision Measurement Instruments
Benchtop DMMs, frequency counters, component
measurement instruments (LCR), electronic dc loads,
current probes.
RF and EMC Test Equipment
Spectrum analyzers, signal generators, frequency counters,
power meters, emc measurement instruments.
