6243/44 DC Voltage Current Source/Monitor Operation Manual
4.8 Alarm Detection
4-39
• The differences between the upper case and the lower case indications of OSC/osc, RP/rp, and LM/
lm are as follows:
• The oscillation detection levels of OSC/osc are as follows:
Oscillation detection related to source system: 10 kHz to 2 MHz, 1 Vp-p or higher
Oscillation detection related to output terminals: 10 kHz to 50 kHz, 2 Vp-p or higher
Detection of the own high-frequency oscillation due to the device itself is not possible.
NOTE:
1. OSC/osc and LM/lm may be detected under the following circumstances even if actual oscillation or limiter is
not generated.
•OSC, LM: When the output is changed during measurement
Ex.: When the pulse width (Tw) and measure delay (Td) is set to be the same, and the pulse rises or falls
during measurement.
• lm: When the limiter set value is small and the settling time takes 20 ms or longer from the voltage source
value change
Ex.: When the current limiter is set at 0.3 A and voltage is changed by 100 V
(Refer to Section 4.9.2 (1).)
2. osc, rp and lm are not detected under the following circumstances.
• When the pulse width is 20 ms or less: detection at the pulse value source point
• Period - pulse width is 20 ms or less: detection at the base value source point
• Sweeped for the period of 20 ms or faster
3. The detection result may not appear in the measurement data header even if oscillation, limiter or reverse polar-
ity source is detected in the GPIB status.
•OSC/osc, RP/rp, and LM/lm are displayed at the same location as the results of Comparator calcula-
tions (HI/GO/LO), and the display priority is as follows:
1 osc
2 rp
3 lm
4 OSC
5 RP
6 LM
7HI/GO/LO
Display Timing of detection
GPIB output
Buzzer
Sub-header Status
OSC, RP, LM During measurement Yes
osc, rp, lm Approximately every 100 ms
(Operate status)
No detection in 20 ms from the
source or limiter change timing
Yes Yes
To Next Page
Loading...
Need help?
General
