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LanScaper

TM

3.2.4 Tone Generator

3.3 Network Test Modes

3.3.1 Flash Link LED

3.3.2 PING Test

DHCP On Mode

- The tone mode generates audio tones for use with tone tracers on all pairs,

a selected pair or a selected pin. The signal generated on a pair has the signal on one pin and the
complement of the signal on the other pin of the pair, yielding a nominal 10 volts peak-to-peak
across the pair. The SEL button selects one of the four tone sounds provided. The up/down arrows
scroll through the pairs and pins that have signal on them. All pins not being driven are held at
tester ground. The LanScaper™ will automatically turn off in 60 minutes.

- The Flash Link LED mode starts with the Voltage Check test (see section

above) then searches for link pulses on the tester's jack, automatically configuring the interface to
connect to a HUB, switch or NIC (similar to AUTO MDI/MDI-X) if one is found. An audio tone
signal is being sent down the cable, so the cable can be located at the other end with a tone tracer
whenever this mode is selected. The tone cadence is different for an open cable versus an
established link to indicate the link status. Once a link is established, the Link LED on the
LanScaper™ will illuminate and begin blinking at the same rate as the link indicator on the device
at the other end. The LanScaper™ will automatically turn off in 30 minutes.

While the tester is searching for incoming link pulses, it displays the message “Find Active Link.”
Once link pulses are found, the tester displays “Link Found” and the Link LED flashes. If the tester
detects that the incoming link pulses stop, it reports “Lost Link” for several seconds, then returns to
the search for link pulses.

- The PING Test operates in DHCP On or DHCP Off (Manual) IP address

configuration modes. The address configuration mode is a setup option. In either case, a Target
device must be selected in Setup, and its IP address confirmed. If the Target address is on the LAN
segment, as determined by the Netmask, the Target will be addressed directly on the Ethernet. If
the Target is not local, PINGs will be directed to the Router for forwarding on the WAN side of the
Router. When running in this mode, the LanScaper™ will respond to PINGs addressed to it from
any other device.

In this test, the LanScaper™ checks for voltages, then searches for link pulses on it's jack,
automatically configuring the interface to connect to a HUB, switch or NIC. Once an active link is
found, the tester configures its IP address parameters as selected by the user. Once the parameters
are set, the tester starts sending out PING packets to the selected Target, the Router, and (in DHCP
mode) the DNS server. The PINGs continue for 15 minutes after the last button press, after which
the LanScaper™ will automatically turn off.

- After detecting incoming link pulses, the tester requests IP address parameters

using the DHCP protocol. The tester displays the message “DHCP Request” and a count of
attempts. This protocol requires a response from a DHCP server accessible on the LAN. If no
response to its request is received after 10 seconds, the tester will repeat its request, and increment
the count on the screen. Once the tester gets a response from a server, it displays the message
“Successful”. No manual configuration is required for the DHCP protocol to work. If the tester
continues to count requests, the most likely problem is that a DHCP server is not available on the
LAN. In that case, the tester must be manually configured. For information on that mode, see the
DHCP Off section below.

Once the DHCP server has provided the LanScaper™ with a value for the address the tester will
use (MyIP), that address is checked for conflict. The tester issues an Address Resolution Protocol

Summary of Contents for LanScaper NT700

Page 1: ...LanScaper TM OPERATING INSTRUCTIONS...

Page 2: ...test change the value of an option enter sub menus or move to the next screen Depending on context Mode Key Press CABLE for cable modes press NTWRK for network modes or press the center both at once...

Page 3: ...Jack ID 3 2 2 Cable Test 3 2 3 Cable Length 3 2 4 Tone Generator 3 3 Network Test Modes 3 3 1 Flash Link LED 3 3 2 PING Test 3 3 3 Validate Link 4 0 SETUP MODE 4 1 Target Setup Sub Menu 4 2 PING Setu...

Page 4: ......

Page 5: ...d Skips the ID portion of the Jack ID test above 1 Connect one end of cable run to be tested to LanScaper Press CABLE button repeatedly until Cable Test is displayed twice if unit was off Press SEL bu...

Page 6: ...2 Press NTWRK button repeatedly until PING Test is displayed on screen two presses when off Press SEL button to enter test Several status screens will be displayed while establishing a link and negot...

Page 7: ...button will immediately end any currently running task and either begin the executing the first task of a new category cable or network or display the next mode in the same category waiting for a pre...

Page 8: ...detected the second line will have a flashing x in that position and the specific short condition displayed on the third line If a split pair is detected those pin positions on the second line will b...

Page 9: ...tion modes The address configuration mode is a setup option In either case a Target device must be selected in Setup and its IP address confirmed If the Target address is on the LAN segment as determi...

Page 10: ...tester for it to be possible for them to communicate directly on the same LAN segment A good guess is to use an IP address different by just a few low order digits in the low order byte of the IP add...

Page 11: ...ne The Target IP address can either be on the LAN segment or remote If the Target is on the LAN the status of the LanScaper Target conversation will be as described for the Router above In the off loc...

Page 12: ...ll assume is not responding on the network it will not interfere with other devices on the LAN The PING Generator must be setup in DHCP Off mode and its manual IP configuration must be setup to addres...

Page 13: ...on reserved IP addresses This is any address other than 0 0 0 0 or 224 255 x x x MyIP is edited in a similar fashion to the Target IP addresses described above The Router IP address is also edited in...

Page 14: ...th it measures in feet or meters The length constant is converted to the new units In Validate Link mode this status shows that the tester has detected another active LanScaper trying to start a PING...

Page 15: ...ame as the DNS Server IP address so the Target PING is automatically disabled The active Target IP address is the same as the Router IP address so the Target PING is automatically disabled The IP addr...

Page 16: ...the correct pins at the other end of the cable While testing with a remote the wire map shows the pin numbers line 1 main line 2 remote A is a special case of a miswire in which the pair is wired to...

Page 17: ...8 8 8 8 8 8 8 8 SHORT T568A B Passing Cable unshielded 1 not twisted with 2 3 not twisted with 6 Fig 6 1 Examples of Wiring Errors shielded 12345678S ID 12345678S ID 12345678 ID 12345678S ID 12345678S...

Page 18: ...rature 0 to 50 C 32 to 122 F Storage temperature 30 to 80 C 20 to 176 F Humidity 10 to 90 non condensing 9V Alkaline battery typical times are for the full capacity of the battery used continuously in...

Page 19: ...an be used with a straight through cable to connect a normal HUB port to the UPLINK port Ethernet physical wiring is done on a point point mechanism but an Ethernet network is a star network where any...

Page 20: ...ound on and once it has determined that it only forwards traffic destined for that address to that port This allows for fewer collisions on the LAN by not re transmitting every packet on every port Mu...

Page 21: ...ng PINGing the DNS server proves that the LanScaper can access a device on the WAN Router see below Internet Protocol Actually TCP IP Transmission Control Protocol Internet Protocol but commonly abbre...

Page 22: ...munications which differentiates it from a HUB or switch A hardware box sold as a router will usually include a HUB or switch chip inside providing a convenient connection point for multiple Ethernet...

Page 23: ...inspected by anyone other than Test Um authorized personnel In no event will Test Um Inc be liable for any incidental or consequential damages The LanScaper is designed and manufactured to provide tr...

Page 24: ...Test Um Inc The Intelligent Test Solutions Company 805 383 1500 FAX 805 383 1595 www test um com 808 Calle Plano Camarillo CA 93012 TU9854 3 Rev A 2 03...

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