3. Operating Instructions
11. BNC or SMA test port. This connects to the cable to be tested. Be sure to properly
ground the cable before connecting it to test port in order to prevent electrostatic damage
to the CT100B’s sensitive sampling circuitry.
CAUTION: All static charge must be drained from the cable to be tested
prior to connecting to the test port (11). This is done by shorting the cable
center conductor to the cable sheath/ground return. If this procedure is
not followed, the sampling electronics can be damaged and will void the
Warranty.
12. Host USB port. This USB (V1.1) connection can be used to interface to a client USB
device such as a barcode reader, keyboard, or flash drive.
13.
FILE
button. Opens the
File
menu, which contains a database of user configurations,
saved cable records (scans), and a Vp database for known cable types.
14.
SELECT
button. Used to select between traces on the screen. It has no effect if there are
no other traces.
Note:
When the
SELECT
button is held down, press the
M-FUNC
button. The CT100B will generate a screenshot that can be saved to a USB drive.
15.
CURSOR
button. This button is used to toggle between the two available cursors.
Pressing and holding the
CURSOR
button for one second and then releasing the button
will bring both cursors onto the screen.
16.
SCAN
button. Displays a specialized soft-menu that brings up the
Scan
menu.
17.
AUTOFIT/HELP
(
orange
) button. Opens the on-screen help library along with
Autofit
soft-menu options.
18.
M-FUNC
(multifunction) button. The function of the
M-FUNCTION
knob (19) is set by
this button. The current operation is displayed on the screen (top-center).
19.
M-FUNCTION
(multifunction) knob. This knob adopts the function selected through the
use of the M-FUNC button (18). It also allows users to scroll through dialog box options.
20.
V1
function button. Function depends on menu.
21.
V2
function button. Function depends on menu.
22.
V3
function button. Function depends on menu.
23.
V4
function button. Function depends on menu.
3.5. Rear Panel Connectors and Switches
The following numbered items describe the connectors and switches identified in the rear panel
diagram (Figure 3.3) and described in the text below.
24. 24 VDC power adapter plug. The provided 24 VDC AC adapter plugs into this port. Only
MOHR-approved positive center tip, 24V adapters may be used.
25. Client USB connection. Allows the CT100B to be connected to a host computer for data
transfer and PC control.
26. RJ-45 Ethernet port. This is a 10/100 Mb Ethernet port that can be used for data
transfer and remote PC control.
27. Power switch. This is a manual ON/OFF power switch that turns the device off and
disconnects the power from the internal electronics so the unit can be stored and/or
shipped safely.
CT100B TDR Cable Analyzers Operator’s Manual
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