Vanguard Auto-Ohm - Manual (Page 8)

Auto-Ohm Operating Procedures
4
Table 2. Functional Description of Auto-Ohm Controls and Display
Figure 1
Index # Adjacent Panel Marking Functional Description
1 120/240 Vac, 8A, 50- 60 Hz Input power connector with third-wire safety
ground and 10A built-in circuit breaker
2
no marking
LCD; 4-line by 16-character; back-lighted;
Displays menus of selections, operator
entries, and test-measurement results
3
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 2 for a summary of the step-by-
step operating procedures
4
RS-232C
RS-232C interface port; 9-pin connector;
female DB type. The data are set to 19,200
baud, 1 start bit, 8 data bits, and no parity bit;
PIN ................ SIGNAL
2 ................ Rx
3 ................ Tx
5 ................ Signal Gnd
5 HIGH CURRENT
PRESENT
LED indicator, red; Lights when high test
current is going through the test leads.
6 (resistor symbol) Voltage-sensing connector jacks (red).
7
(None)
Current lead connectors (red); Female jacks
for heavy-gauge test cables, which conduct up
to 100 amperes of test current.