Manual - 8500A Series Peak Power Meter - Giga-tronics

Series 8500A Peak Power Meters
Over and Under Range Conditions
The maximum value that the 1018B can output is 19.99 mW. Any power reading over that will just result
in a reading of 19.99 mW when in the linear mode. In the log mode, the reading could be displayed up to
099.99 dBm. The minimum values are 000.0 µW in the linear mode or a reading of -099.9 dBm
indicating an under range condition in the log mode.
1018B Features Not Emulated by the PPM
Following is a list of the differences in GPIB operation when the Model 1018B Peak Power Meter is
replaced on the bus with a Model 8501A or Model 8502A Peak Power Meter (PPM):
1. The PPM has no ability to be directly triggered with a GET command. It can only reset its
trigger to capture the next pulse that will trigger the instrument.
2. The PPM has no talk only mode.
3. Whereas the 1018B allowed completely independent talk and listen addresses, the PPM must
have the same talk and listen addresses. The addresses are set as one via the front panel.
4. The 1018B locks out the front panel delay setting capability while in the REMOTE state. The
front panel delay setting ability remains active on the PPM when in the REMOTE state of the
1018B Emulation Mode.
5. The 1018B will take commands and output data even if it is not in the REMOTE state. This
requires the instrument to be in REM.
3-40 Manual No. 20790, Rev C, November 1998
Superceded by Revision D, March 2009