HP 8648 A/B/C/D - Changpuak.ch

10 d 5 Specified Vernier Ranges
Range Upper and Lower Limits
1 + 10.0 dBm* to -5.9 dBm
2 -6.0 dBm to - 15.9 dBm
3 - 16.0 dBm to -25.9 dBm
4 -26.0 dBm to -35.9 dBm
5 -36.0 dBm to -45.9 dBm
6 -46.0 dBm to -55.9 dBm
7 -56.0 dBm to -65.9 dBm
8 -66.0 dBm to -75.9 dBm
9 -76.0 dBm to -85.9 dBm
10 -86.0 dBm to -95.9 dBm
11 -96.0 dBm to -105.9 dBm
12 -106.0 dBm to -115.9 dBm
13 - 116.0 dBm to - 127.0 dBm
14 -127.1 dBm to -136.0 dBm
* +13d Im for HP 8648BICID
RF Output
3. RF OUTPUT The following table shows the reverse power protection for the RF
output port of each instrument model. When the instrument senses a
reverse-power signal, it turns the RF output off, the step attenuator to
maximum attenuation, and the vernier to its lowest setting.
A message appears in the second line of the display when the reverse
power protection has been activated.
After you have removed the reverse-power signal from the RF output,
press the (j-1 key to turn the output signal on again.
Caution Applying a signal source to the RF output port that exceeds the power
levels listed or maintaining a signal source at the RF output for an
extended period of time may damage the instrument.
Reverse Power Protection
5 2000 MHz 50 watts into 50 ohms
> 2000 MHz 25 watts into 50 ohms
Operation Reference 1 b-55