GW Instek GOM-802 User Manual - Manual (Page 8)

GOM-802 DC MILLI-OHM METER
USER MANUAL
⎯ ⎯
10
4-1. Front Panel
1. Interface Indicator
2. Normal value displayed area.
3. Comparator indicator.
4. Upper limit percentage display area.
5. Low limit percentage display area.
6. Measurement value displayed area.
7. Functions control indicator.
8. Measurement terminal: Sense HI, Sense LO
9. Current source terminal: Source HI, Source LO.
10. The negative measurement terminal has the same potential as the
circuit earth terminal, but can not be replaced by it.
11. Function Control knob.
WARNING: This equipment is not for measurements
performed for CAT II, III and IV.
4-2. Rear Panel
12. GPIB Interface terminal.
13. RS232 Interface terminal.
14. Handler and SCAN interface terminal.
15. Temperature compensation probe terminal (TC SENSOR).
16. Line voltage selector and input fuse holder.
17. AC Power-line connector.
GOM-802 DC MILLI-OHM METER
USER MANUAL
⎯ ⎯
11
5. OPERATION INTRODUCTION
5-1. The [SHIFT] key and function keys
The [SHIFT] button is used to enable the secondary function of certain
function keys that with blue symbols printed above. The SHIFT LED will
be on after pressed the [SHIFT] button. At this time, only the buttons with
blue symbols are workable. To release SHIFT function, press [SHIFT]
again.
5-2. Warm up
The instrument requires half-an-hour warm up to achieve rated accuracy.
5-3. Over-range indication
If the input exceeds the full scale of the selected range, the instrument will
indicate over-range input by lighting the “OL” message on the display.
5-4. TRIG standby indication
Under the TRIG mode, change the range or power on the instrument, the
“————” message will be displayed on the measurement displayed area,
now the instrument is in the TRIG standby status. The decimal is
represented the range. When proceeding the TRIG measurement, the
measurement displayed area will display the present measuring value.
5-5. Input overload protection
The maximum allowable input is shown as table 5-1. Please proceed the
measurement accordingly.
Table 5-1:
RANGE MAXIMUN INPUT
30mΩ, 300mΩ,3Ω 30Vp DC
Other ranges 100Vp DC
WARNING: To avoid shock hazard and/or instrument
damage, do not apply input potentials that exceed the input
overload limits shown in table 5-1.