H Heuer Instruments Pty Ltd - Portable Handheld Test Equipment- LM11 LG11 TU11 LM41 LG41 R41 FB41

Detailed Specification Differences (TMS A41 vs. TMS A11)

TMS A41 vs. TMS A11 TMS A41 TMS A11

Input Impedances 600 W , TN12 (220 W + 120 nF || 820 W ),
600 W Bridging (100 k W ),
TN12 Bridging (100 kW ) 600 W , 1200 W ,
600 W Bridging (100 kW )

Bandwidth 30 Hz to 200 kHz 30 Hz to 20 kHz

Band Limited 3.1 kHz BPF (ITU-T Rec O.41)
300 Hz to 3400 Hz 3 kHz LPF

Psophometric In accordance with ITU-T Rec. O.41, CCITT Rec. P53

Quantizing Noise - Notch at 820 Hz (in conjunction with any of above 3 filters (WTG, 3k, 70k)

Input Level Range -60 dBm to +30 dBm
autoranging or manual setting

Input Level Accuracy +30 dBm to -30 dBm: ± 0.15 dB
less than -30 dBm: ± 0.25 dB

Input Frequency Response (Wideband) 100 Hz to 20 kHz: ± 0.1 dB
30 Hz to 50 kHz: ± 0.2 dB
200 kHz: ± 0.5 dB 300 Hz to 4 kHz: ± 0.1 dB
30 Hz to 20 kHz: ± 0.2 dB

Meter Display Absolute (dBm/mV), relative (dBr) Absolute (dBm/mV), relative (dBr) Bar-graph meter

Input Resolution 0.1 dB, expanded 0.01 dB

Input Detector True RMS

Frequency Counter 10 Hz to 200 kHz, autoranging
0.1 Hz: 10 Hz to 1.7 kHz (expanded)
1 Hz: 10 Hz to 20 kHz
10 Hz: 20 kHz to 200 kHz
0.05 % ± 0.1 Hz 10 Hz to 20 kHz, autoranging
0.1 Hz: 10 Hz to 1.7 kHz
1 Hz: 1.7 kHz to 20 kHz
0.025 % ± 0.1 Hz

Meter Bridging Loss < 0.10 dB, 200 Hz to 20 kHz

Input Return Loss ³ 35 dB, 200 Hz to 20 kHz

Input Balance ratio ³ 40 dB, 30 Hz to 20 kHz

Meter Builtin Oscillator 820 Hz. -10 dBm, 600 W (balanced)
1020 Hz. -10 dBm, TN12 (balanced) 820 Hz. 0 dBm/-10 dBm, 600 W (balanced)

Audio Monitor Built-in speaker with volume control

AC Monitor Output - Unbalanced 3.5 mm connector

DC Voltmeter - 0-100 V, 1% FSD ± 0.1 V, 0.1Vresolution

Charge LED Indicator Yes -

ALM (Automatic Loss Measurement) to Responder R41 300 Hz to 3400 Hz
Loss Range: -4 dB to 26 dB
WTG, 3 kHz BP noise (LM41):
+10 dBm to -80 dBm
WTG, BP noise (R41):
< -70 dBm, b/w -70 & -60 dBm, > -60 dBm -

Return Loss Measurement 600 W or TN12 reference
300 Hz to 3400 Hz
0 to 35 dB ±0.5 dB, ± 5% -

Impulse Noise Measurement Threshold Range: -50 dBm to 0dBm
Deadtime: 125 ms
Test Duration: 1s to 99 hrs -

Dropout Measurement Test Tone Level: -30 dBm to 0dBm
Threshold Range: 1 to 20 dB
Deadtime: 3 ms
Test Duration: 1s to 99 hrs -

Telephone Operation Plug in Handset
2-Wire: LM41 connector
4-Wire: LM41 i/p connector linked to Handset speaker, Handset microphone connected to LG41 o/p connector - must connect LG41 to LM41 via RJ cable Hands free (press to talk option)
2-Wire: A and B con.s in parallel
4-Wire:
A® B: microphone linked to A con. speaker linked to B con.
A¬ B: speaker linked to A con. microphone linked to B con.

Dialling Pulse, DTMF

DC Line Voltage 5-100 V, 2%, 1Vresolution -

Ring Voltage 5-100 V (rms), ± 5%, 1 V resolution -

Loop Current 5-70 mA, ± 5%, 1mA resolution -

Loop LED Indicator Yes ( ³ 6 mA) -

Dial Tester - Number of stored digits: 17
Pulse
Break time: 11 ms - 99ms ± 1 ms
Make Time: 11 ms - 99 ms ± 1 ms
Dial Speed: ± 0.1 Hz at 10 Hz
Interdigit Pause: 150 ms - 999 ms
DTMF
High Tone Frequency: ± 4 Hz Low Tone Frequency: ± 2 Hz
Level of any fundamental frequency:
-20 dBm to -5 dBm ± 0.5 dB
-25 dBm to -1 dBm ± 1 dB
Tone ON time: 45 ms - 999ms ± 3ms
Tone OFF time: 45 ms- 999ms ± 3ms
Detected Characters: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, #, A, B, C, D

Interface Facilities 2-Wire Receive: LM41 holds DC loop on 600 W T or TN12 T (input impedance).
2-Wire Send: LG41 holds DC loop (must connect LG41 to LM41 via RJ cable). Output impedance is LG41 impedance
4-Wire: Connect receive to LM41, transmit to LG41. 2-Wire Receive: LM11 connected to both A & B con.s LM11 holds DC loop when set to 600 W or 1200 W .
2-Wire Send: LG11 connected to both A & B con.s. LG11 holds DC loop. LG11 sets output impedance.
4-Wire:
A-Send, B-Receive: A con. linked to LG11, B con linked to LM11
A-Send, B-Receive: A con. linked to LM11, B con linked to LG11

PC Serial Interface Optically isolated at 4800 baud Operates with "LM41 LinkView" SW -

Measurement Save Upto 2k Bytes of EEPROM storage -

Frequency Range 10 Hz to 200 kHz 30 Hz to 20 kHz

Frequency Resolution 0.1 Hz: 10 Hz to 200 kHz 1 Hz upto 1 kHz 10 Hz upto 20 kHz

Spot Frequencies 200, 300, 400 Hz, 600, 820, 1020, 1200, 1600, 1800, 2000, 2400, 2700, 3000, 3400, 4000 Hz

Spot Frequency Control Individual spot frequencies are selected by quickly stepping through the spot frequencies

Variable Frequency Rotary control Continuous coverage between spot frequencies, 30 Hz to 20 kHz

Frequency Accuracy ± 0.001 % ± 0.01 Hz ± 1% (spot frequencies) ± 0.1 % for variable frequencies

Sweep Operation The following sequence is provided:

820 Hz (1020 Hz) reference for 10 s

pause for 5 s

spot frequencies for 5 s each

pause for 5s

The following sequence is provided:

820 Hz reference for 10 s

pause for 5 s

spot frequencies for 5 s each

pause for 5s

Osc Level Range -56 dBm to +10 dBm (600 W , 0 W , 100 Hz to 20 kHz)
-56 dBm to +5 dBm (100 Hz to 200 kHz) -55 dBm to +10 dBm

Osc Level Accuracy ± 0.2 dB (100 Hz to 20 kHz) ± 0.4 dB (up to 200 kHz) ± 0.2 dB

Osc Level Resolution ± 0.1 dB

Osc Level Control Rotary Control INC/DEC buttons

Output Impedance 0 W , 135W , 600 W ,
TN12 (220 W + 120 nF || 820 W ) 0 W , 600 W , 1200 W balanced

Output Return Loss ³ 35 dB, over the frequency range

Signal Balance ratio ³ 40 dB

Output Distortion <-50 dB <-60 dB

Loop Hold Capable of holding a looped telephone circuit

Muting Yes No

DC Feed (-48V) -44 V to -57 V

DC Current (-50V Supply)

Load: 4000 W
1200 W
0W

> 10 mA
25 mA
< 50 mA

Noise with 600 W Load < -85 dBmp

Bridging Loss < 0.1 dB

Balance Ratio > 40 dB

Maximum Signal Level +10 dBm

Ring Generator

Frequency
DC Voltage
AC Voltage
Cadence

Ring Trip Current

25 Hz
-50V
63 Vrms
On 0.4s
Off 0.2s
On 0.4s
Off 2.0s
6 mA

E &M Signalling

E-LED turn-on current
M-LED turn-on current
E-Lead current Limit
M-Lead Current Limit

3 mA ± 0.5 mA
3 mA ± 0.5 mA
28 mA (1800 W )
25 W PTC -

Battery Monitor (battery powered units) Yes, displays voltage on power-up, Low battery indication below 3.8 V Low battery indication below 3.8V

Closed Box calibration (battery powered units) Yes -

LM41 LM11

R41 TU11

LG41 LG11

FB41 FB11

TMS A41 vs. TMS A11	TMS A41	TMS A11
Input Impedances	600 W , TN12 (220 W + 120 nF \|\| 820 W ), 600 W Bridging (100 k W ), TN12 Bridging (100 kW )	600 W , 1200 W , 600 W Bridging (100 kW )
Bandwidth	30 Hz to 200 kHz	30 Hz to 20 kHz
Band Limited	3.1 kHz BPF (ITU-T Rec O.41) 300 Hz to 3400 Hz	3 kHz LPF
Psophometric	In accordance with ITU-T Rec. O.41, CCITT Rec. P53
Quantizing Noise	-	Notch at 820 Hz (in conjunction with any of above 3 filters (WTG, 3k, 70k)
Input Level Range	-60 dBm to +30 dBm autoranging or manual setting
Input Level Accuracy	+30 dBm to -30 dBm: ± 0.15 dB less than -30 dBm: ± 0.25 dB
Input Frequency Response (Wideband)	100 Hz to 20 kHz: ± 0.1 dB 30 Hz to 50 kHz: ± 0.2 dB 200 kHz: ± 0.5 dB	300 Hz to 4 kHz: ± 0.1 dB 30 Hz to 20 kHz: ± 0.2 dB
Meter Display	Absolute (dBm/mV), relative (dBr)	Absolute (dBm/mV), relative (dBr) Bar-graph meter
Input Resolution	0.1 dB, expanded 0.01 dB
Input Detector	True RMS
Frequency Counter	10 Hz to 200 kHz, autoranging 0.1 Hz: 10 Hz to 1.7 kHz (expanded) 1 Hz: 10 Hz to 20 kHz 10 Hz: 20 kHz to 200 kHz 0.05 % ± 0.1 Hz	10 Hz to 20 kHz, autoranging 0.1 Hz: 10 Hz to 1.7 kHz 1 Hz: 1.7 kHz to 20 kHz 0.025 % ± 0.1 Hz
Meter Bridging Loss	< 0.10 dB, 200 Hz to 20 kHz
Input Return Loss	³ 35 dB, 200 Hz to 20 kHz
Input Balance ratio	³ 40 dB, 30 Hz to 20 kHz
Meter Builtin Oscillator	820 Hz. -10 dBm, 600 W (balanced) 1020 Hz. -10 dBm, TN12 (balanced)	820 Hz. 0 dBm/-10 dBm, 600 W (balanced)
Audio Monitor	Built-in speaker with volume control
AC Monitor Output	-	Unbalanced 3.5 mm connector
DC Voltmeter	-	0-100 V, 1% FSD ± 0.1 V, 0.1Vresolution
Charge LED Indicator	Yes	-
ALM (Automatic Loss Measurement) to Responder R41	300 Hz to 3400 Hz Loss Range: -4 dB to 26 dB WTG, 3 kHz BP noise (LM41): +10 dBm to -80 dBm WTG, BP noise (R41): < -70 dBm, b/w -70 & -60 dBm, > -60 dBm	-
Return Loss Measurement	600 W or TN12 reference 300 Hz to 3400 Hz 0 to 35 dB ±0.5 dB, ± 5%	-
Impulse Noise Measurement	Threshold Range: -50 dBm to 0dBm Deadtime: 125 ms Test Duration: 1s to 99 hrs	-
Dropout Measurement	Test Tone Level: -30 dBm to 0dBm Threshold Range: 1 to 20 dB Deadtime: 3 ms Test Duration: 1s to 99 hrs	-
Telephone Operation	Plug in Handset 2-Wire: LM41 connector 4-Wire: LM41 i/p connector linked to Handset speaker, Handset microphone connected to LG41 o/p connector - must connect LG41 to LM41 via RJ cable	Hands free (press to talk option) 2-Wire: A and B con.s in parallel 4-Wire: A® B: microphone linked to A con. speaker linked to B con. A¬ B: speaker linked to A con. microphone linked to B con.
Dialling	Pulse, DTMF
DC Line Voltage	5-100 V, 2%, 1Vresolution	-
Ring Voltage	5-100 V (rms), ± 5%, 1 V resolution	-
Loop Current	5-70 mA, ± 5%, 1mA resolution	-
Loop LED Indicator	Yes ( ³ 6 mA)	-
Dial Tester	-	Number of stored digits: 17 Pulse Break time: 11 ms - 99ms ± 1 ms Make Time: 11 ms - 99 ms ± 1 ms Dial Speed: ± 0.1 Hz at 10 Hz Interdigit Pause: 150 ms - 999 ms DTMF High Tone Frequency: ± 4 Hz Low Tone Frequency: ± 2 Hz Level of any fundamental frequency: -20 dBm to -5 dBm ± 0.5 dB -25 dBm to -1 dBm ± 1 dB Tone ON time: 45 ms - 999ms ± 3ms Tone OFF time: 45 ms- 999ms ± 3ms Detected Characters: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, #, A, B, C, D
Interface Facilities	2-Wire Receive: LM41 holds DC loop on 600 W T or TN12 T (input impedance). 2-Wire Send: LG41 holds DC loop (must connect LG41 to LM41 via RJ cable). Output impedance is LG41 impedance 4-Wire: Connect receive to LM41, transmit to LG41.	2-Wire Receive: LM11 connected to both A & B con.s LM11 holds DC loop when set to 600 W or 1200 W . 2-Wire Send: LG11 connected to both A & B con.s. LG11 holds DC loop. LG11 sets output impedance. 4-Wire: A-Send, B-Receive: A con. linked to LG11, B con linked to LM11 A-Send, B-Receive: A con. linked to LM11, B con linked to LG11
PC Serial Interface	Optically isolated at 4800 baud Operates with "LM41 LinkView" SW	-
Measurement Save	Upto 2k Bytes of EEPROM storage	-
Frequency Range	10 Hz to 200 kHz	30 Hz to 20 kHz
Frequency Resolution	0.1 Hz: 10 Hz to 200 kHz	1 Hz upto 1 kHz 10 Hz upto 20 kHz
Spot Frequencies	200, 300, 400 Hz, 600, 820, 1020, 1200, 1600, 1800, 2000, 2400, 2700, 3000, 3400, 4000 Hz
Spot Frequency Control	Individual spot frequencies are selected by quickly stepping through the spot frequencies
Variable Frequency	Rotary control	Continuous coverage between spot frequencies, 30 Hz to 20 kHz
Frequency Accuracy	± 0.001 % ± 0.01 Hz	± 1% (spot frequencies) ± 0.1 % for variable frequencies
Sweep Operation	The following sequence is provided: 820 Hz (1020 Hz) reference for 10 s pause for 5 s spot frequencies for 5 s each pause for 5s	The following sequence is provided: 820 Hz reference for 10 s pause for 5 s spot frequencies for 5 s each pause for 5s
Osc Level Range	-56 dBm to +10 dBm (600 W , 0 W , 100 Hz to 20 kHz) -56 dBm to +5 dBm (100 Hz to 200 kHz)	-55 dBm to +10 dBm
Osc Level Accuracy	± 0.2 dB (100 Hz to 20 kHz) ± 0.4 dB (up to 200 kHz)	± 0.2 dB
Osc Level Resolution	± 0.1 dB
Osc Level Control	Rotary Control	INC/DEC buttons
Output Impedance	0 W , 135W , 600 W , TN12 (220 W + 120 nF \|\| 820 W )	0 W , 600 W , 1200 W balanced
Output Return Loss	³ 35 dB, over the frequency range
Signal Balance ratio	³ 40 dB
Output Distortion	<-50 dB	<-60 dB
Loop Hold	Capable of holding a looped telephone circuit
Muting	Yes	No
DC Feed (-48V)	-44 V to -57 V
DC Current (-50V Supply) Load: 4000 W 1200 W 0W	> 10 mA 25 mA < 50 mA
Noise with 600 W Load	< -85 dBmp
Bridging Loss	< 0.1 dB
Balance Ratio	> 40 dB
Maximum Signal Level	+10 dBm
Ring Generator Frequency DC Voltage AC Voltage Cadence Ring Trip Current	25 Hz -50V 63 Vrms On 0.4s Off 0.2s On 0.4s Off 2.0s 6 mA
E &M Signalling E-LED turn-on current M-LED turn-on current E-Lead current Limit M-Lead Current Limit	3 mA ± 0.5 mA 3 mA ± 0.5 mA 28 mA (1800 W ) 25 W PTC	-
Battery Monitor (battery powered units)	Yes, displays voltage on power-up, Low battery indication below 3.8 V	Low battery indication below 3.8V
Closed Box calibration (battery powered units)	Yes	-