The Model 905 PC Notebook Comscope is the latest addition to Telebyte’s line of
powerful and flexible PC based protocol analyzers. The Model 905 is a high performance
data line monitor, bit error rate tester and emulator in a small configu-ration that
supports all PC’s. The combination of the 905 and PC produces a powerful protocol
analyzer. The Model 905 PC Comscope is an external device and does not require the user to
open up his PC. The 904 installs easily - just connect the cable to the parallel port on
any PC and you’re ready to go. The Model 905 is equipped with a com-plete range of
hardware interfaces which include RS-232, RS-422, RS-485 and V.35. Selection of the
desired interface is under program menu selection.
The versatility of the Model 905 is unlimited with the in-cluded Protocol Emulator
Program Interface (PEPI). With PEPI you can select either our off-the-shelf test analysis
pro-grams or write your own.
Operation of the 905 is under control of a program running on the PC. The Model 905
supports most WAN protocols including Asynchronous and Synchronous. The synchronous
capability includes Bisync and IPARS, and Bit Oriented pro-tocols such as SDLC, SNA, and
X.25. The Model 905 cap-tures the whole picture: Data, control leads, timed stamps and
error conditions. This enables you to do extensive post-capture analysis of data, even at
a different location. You can trap or search for any combination of these events, and not
just data strings.
While small in size the 905 is high in performance. A co-processor enables it to
monitor data lines on a full duplex basis to 64 KBPS and emulate up to 64 KBPS.
The Model 905 uses the PC’s com port as the communica-tions link between the
resources of the PC and the microproc-essor inside of the Model 905.
User access to the Model 905 is via a DB25 male connector on the rear panel. A DB9
female connector is provided to access the PC.
Front panel switches allow selection of monitoring or emula-tion of either DTE or DCE.
Eight status LED’s display TD, RD, RTS, CTS, DSR, DCD, DTR and RI.
Emulate Mode
A "State Programming" technique is used for emulation Four entries, or fields,
are required for each instruction. The first is the instruction number called State; more
than one instruction can have the same state number. The second field is called Wait For,
which allows a specific condition to be set as a trigger. The Action field specifies the
action to be taken when the wait-for condition occurs. The last field called Next State is
used much like the "GO TO" statement in a BASIC computer program by moving the
test to a new state.
Pull Down Menus
Pull down menus make the PC Comscope the ultimate in simplicity for the operator. Built-in
HELP screens also assist the inexperienced user. The PC Comscope operates in ASYNC, SYNC,
HDLC or in a mode called UNKNOWN whereby any serial data can be accepted and deciphered.
The Power Trap Menu
Your host is mysteriously disconnecting a certain terminal sometime during the night.
Every few hours your PAD gets a CMDR citing invalid packet numbering. The PC Comscope trap
facility is designed to diagnose problems like these. You specify certain conditions (not
just data strings) and when they appear the PC Comscope will freeze the data. You can
examine activity before and after, then use the trap menu to search for various
possibilities.
PC Resources
The Model 905 has access to all of the resources of the PC such as disk drives, displays
and printers. In the Data Journal mode, data is saved to DOS files for later viewing,
analysis and printing.
Portability Package
The Model 905 PC Notebook Comscope is supplied with a convenient padded case to simplify
carrying the unit and its accessories. This feature really makes the Comscope port-able.
| Model | Description | Price |
|---|---|---|
| 905 | Comcope - (HDLC - HDLC Protocol Decode Software & X.25 - X.25 Protocol Decode Software Included) | $798 |
| 905-220 | Comcope - 220 Volt - (HDLC - HDLC Protocol Decode Software & X.25 - X.25 Protocol Decode Software Included) | $798 |
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