FAQ 171 FAQ I pressed the power (ON/STBY) key on the front panel but nothing happens. Make sure you turned on the rear panel power switch. For details, see page20. Note that after proper sequence, it takes around 10 seconds for the display to become active. I cannot even see the default green line on the display. Check if the TraceBlank (hide trace from the display) is on for TraceA, the default waveform. Press the Trace key→F1 (select TraceA)→F2 (Clear) to recover the trace. For details, see page74. I connected the signal but it does not appear on screen. Run the Autoset and let the GSP-830 find the best display scale for your target signal. Press the Autoset key, then press F1 (Autoset). For details, see page58. I want to see which optional items are installed. Check the optional item status in the system information window. Press the System key → F6 (More) → F4 (System Config On). For details, see page129. The Pre-amplifier (GAP-801 or GAP-802, page56) is a completely external item, therefore does not appear in the system information menu. The GSP-830 performance does not match the specification. Make sure the device is powered on for at least 30 minutes, within +18°Cto+28°C. This is necessary to stabilize the unit to match the specification. If there is still a problem, please contact your local dealer or GWInstek at firstname.lastname@example.org.