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TDR900 Product page
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User friendly - easy to use menu.
Extra-large backlit (7 segment) LCD
Cable length calibration function.
Tone Generator for cable tracing
Internal library of 39 standard cable types.
Store up to 20 custom cables.
Safety Protection (up to 250 V RMS).
The Megger TDR900 is an advanced instrument capable of measuring cable lengths and finding the distance to an open or short with the use of Time Domain Reflectometry. It
offers exceptional features with a range of capability that would be normally associated with far more expensive instruments. The measurement range spans from 15 feet (5 m)
to 10,000 feet (3 km) with a minimum resolution of 20 inches (50 cm).
The TDR900 can be used for any cable which consists of at least two insulated metallic elements, one of which may be the sheath or shield of the cable. The Meter has automatic
internal matching networks to allow testing of 25Ω, 50Ω, 75Ω, 100Ω, 125Ω, or 150Ω cables. (These correspond to power, telephony, CATV, and LAN cables.)
The Meter can be closely matched to the cable under test using the menu selection keys. The propagation velocity value can be similarly adjusted to match the cable under test; thus
ensuring an accurate distance measurement. The other user adjustable setting is changing the distance measurement units (feet or metres).
The Meter is housed in a rugged ABS enclosure which is dust and weatherproof to IP 42. The unit also comes with a soft carrying case and an alligator clip adapter.
It is powered by 4 AA (NEDA 15A or NR 6) batteries, which are stored in a compartment on the back of the Meter. The batteries are held in a carrier for quick and easy replacement.
Except where otherwise stated, this specification applies at an ambient temper of 68° F (20° C).
General
CABLE LENGTH MEASUREMENTS:
Range: Depends upon the V.O.P of the cables under test.
12,000 ft (3.7 km) @ V. O. P 99.9
9,800 ft (3.0 km) @ V. O. P 80.0
8,000 ft (2.4 km) @ V. O. P 66.0
6,200 ft (1.9 km) @ V. O. P 50.0
Accuracy:
± 2 % of reading + 20 inch (50 < 300 ft (100 m)
± 2 % of reading > 300 ft (100 m)
* This accuracy is effective for Coaxial Cables up to 8,000 feet, Telephony Cables up to 6,000 feet, and Structured Wiring up to 3,000 ft.
Resolution: 20 inches (50 cm)
V.O.P (Velocity of Propagation): Adjustable from 1.0 % to 99.9 (in 0.1 % step)
CABLE LENGTH CALIBRATION FUNCTION:
Allows you to measure the V.O.P, given as a percentage of the speed of light, of a known cable length. Required minimum length of sample cable: 30 ft (10 m)
Nonvolatile Memory
Cable library:
39 standard cable types
Custom cable:
20 custom cable types
Auto-Power-Off:
The Meter is completely turned off after 30 minutes of no activities. Press the POWER button to turn the Meter on again. This feature can be disabled.
Display:
ICON type 7 segment LCD. Backlight stays on for 1 minute when activated.
Connector type: BNC
Power supply:
4 LR6 (AA) type batteries
Battery life: Approx. 5,000 tests
Safety: Complies with IEC 61010-1
EMC: BS/EN 61326-1
WARRANTY:
3 years from date of purchase.
Mechanical:
The meter is designed for use indoors or outdoors. (IP 42)
Dimensions:
9.25 H x 3.94 W x 1.73 D in.
(235 H x 100 W x 44 D mm)
Weight:
Approx. 16 oz (450 g)
Environmental
Operating temperature:
0° F to 140° F (-18° C to 60° C)
Storage temperature:
-4° F to 158° F (-20° C to 70° C)
Relative humidity:
85% at 95° F (35° C)
There are no additional accessories for this product.
| Keep up-to-date with the latest documentation for your device. |
| |
| Category |
Title |
Size |
|
| |
| Data Sheet |
The latest information data sheet |
| |
TDR900 Data Sheet
|
80 KB |
|
| User Guide |
| |
TDR900 User Guide
|
536 KB |
|
| |
|
|
|
INTRODUCING THE TDR900
User friendly - easy to use menu.
Extra-large backlit (7 segment) LCD
Cable length calibration function.
Tone Generator for cable tracing
Internal library of 39 standard cable types.
Store up to 20 custom cables.
Safety Protection (up to 250 V RMS).
The Megger TDR900 is an advanced instrument capable of measuring cable lengths and finding the distance to an open or short with the use of Time Domain Reflectometry. It
offers exceptional features with a range of capability that would be normally associated with far more expensive instruments. The measurement range spans from 15 feet (5 m)
to 10,000 feet (3 km) with a minimum resolution of 20 inches (50 cm).
The TDR900 can be used for any cable which consists of at least two insulated metallic elements, one of which may be the sheath or shield of the cable. The Meter has automatic
internal matching networks to allow testing of 25Ω, 50Ω, 75Ω, 100Ω, 125Ω, or 150Ω cables. (These correspond to power, telephony, CATV, and LAN cables.)
The Meter can be closely matched to the cable under test using the menu selection keys. The propagation velocity value can be similarly adjusted to match the cable under test; thus
ensuring an accurate distance measurement. The other user adjustable setting is changing the distance measurement units (feet or metres).
The Meter is housed in a rugged ABS enclosure which is dust and weatherproof to IP 42. The unit also comes with a soft carrying case and an alligator clip adapter.
It is powered by 4 AA (NEDA 15A or NR 6) batteries, which are stored in a compartment on the back of the Meter. The batteries are held in a carrier for quick and easy replacement.
Except where otherwise stated, this specification applies at an ambient temper of 68° F (20° C).
General
CABLE LENGTH MEASUREMENTS:
Range: Depends upon the V.O.P of the cables under test.
12,000 ft (3.7 km) @ V. O. P 99.9
9,800 ft (3.0 km) @ V. O. P 80.0
8,000 ft (2.4 km) @ V. O. P 66.0
6,200 ft (1.9 km) @ V. O. P 50.0
Accuracy:
± 2 % of reading + 20 inch (50 < 300 ft (100 m)
± 2 % of reading > 300 ft (100 m)
* This accuracy is effective for Coaxial Cables up to 8,000 feet, Telephony Cables up to 6,000 feet, and Structured Wiring up to 3,000 ft.
Resolution: 20 inches (50 cm)
V.O.P (Velocity of Propagation): Adjustable from 1.0 % to 99.9 (in 0.1 % step)
CABLE LENGTH CALIBRATION FUNCTION:
Allows you to measure the V.O.P, given as a percentage of the speed of light, of a known cable length. Required minimum length of sample cable: 30 ft (10 m)
Nonvolatile Memory
Cable library:
39 standard cable types
Custom cable:
20 custom cable types
Auto-Power-Off:
The Meter is completely turned off after 30 minutes of no activities. Press the POWER button to turn the Meter on again. This feature can be disabled.
Display:
ICON type 7 segment LCD. Backlight stays on for 1 minute when activated.
Connector type: BNC
Power supply:
4 LR6 (AA) type batteries
Battery life: Approx. 5,000 tests
Safety: Complies with IEC 61010-1
EMC: BS/EN 61326-1
WARRANTY:
3 years from date of purchase.
Mechanical:
The meter is designed for use indoors or outdoors. (IP 42)
Dimensions:
9.25 H x 3.94 W x 1.73 D in.
(235 H x 100 W x 44 D mm)
Weight:
Approx. 16 oz (450 g)
Environmental
Operating temperature:
0° F to 140° F (-18° C to 60° C)
Storage temperature:
-4° F to 158° F (-20° C to 70° C)
Relative humidity:
85% at 95° F (35° C)
There are no additional accessories for this product.
| Keep up-to-date with the latest documentation for your device. |
| |
| Category |
Title |
Size |
|
| |
| Data Sheet |
The latest information data sheet |
| |
TDR900 Data Sheet
|
80 KB |
|
| User Guide |
| |
TDR900 User Guide
|
536 KB |
|
| |
|
|
|
INTRODUCING THE TDR900
|
|
|
 |
|
 |
|
|