Vanguard Auto-Ohm 100_200 s2 - Manual (Page 15)

AUTO-OHM 100/200 Series 2 Operating Procedures
15
Rev 3, 2009
Table 4.0 Functional Description of Auto-Ohm 200 Series 2 Controls and Display
Figure 7.0
Index #
Adjacent Panel Marking Functional Description
1 & 8 (Wing Nut) Current lead connectors
2 100-240 Vac, 8A, 50-60 Hz
Input power connector with third-wire safety
ground and built-in 10A circuit breaker.
3
no marking
LCD; 2-line by 16-character; back-lighted;
displays menus of selections, operator entries,
and test-measurement results.
4 GROUND
(Wing Nut)
Auto-Ohm 200 Series 2 ground stud. Connect
ground stud to substation ground using
provided cable.
5
RS-232C
RS-232C interface port; 9-pin connector;
female DB type. The data rate is set to 19,200
baud, 1 start bit, 8 data bits, and no parity bit.
PIN ................ SIGNAL
2 Rx
3 Tx
5 Signal Gnd
This serial port is dedicated for factory
calibration and software update.
6 HIGH CURRENT
PRESENT
LED indicator, red, lights when high-test-
current is going through the test leads.
7
CHANGE
“PUSH”
TO SELECT
One-knob control (all Auto-Ohm menus and
selections are controlled by this one control
knob). Turning this control knob scrolls
through different menu options (shown on
an LCD), which display. Pressing the knob
selects the displayed function, usually
producing a new menu of selectable options.
See Figure 12.0 for a summary of the step-by-
step operating procedures.
9 & 10 (resistor symbol) Voltage-sensing connector jacks (red).