1 With the column installed, load your checkout method. 2 Set the oven temperature to 35 °C. 3 Press [Front Detector]([前检测器])或 [Back Detector]([后检测器]),然后滚动到 Output(输出)。 4 When the flame is lit and the GC is ready, verify that the output is stable and < 20 pA. If the output is not stable or > 20 pA, the system or gas may be contaminated. If this contamination is isolated to the detector, then bakeout the FID. (See Bakeout the FID .)