Keysight E4428C ESG RF Programming Manual page 390

Creating and Downloading User–Data Files
Data Transfer Troubleshooting (N5162A, N5182A, E4438C and E8267D Only)
Table 6-19 PRAM Download – Symptoms and Causes
Symptom
ERROR –223, Too much data
Data Requirements
• The signal generator requires a file with a minimum of 60 bytes
• For every data bit (bit 0), you must provide 7 bits of control information (bits 1–7).
Table 6-20 PRAM Data Byte
Bit Function
0 Data
1 Reserved
2 Burst
3 Reserved
4 Reserved
5 Reserved
6 EVENT1
Output
7 Pattern Reset
382
PRAM download exceeds the size of PRAM memory.
Either use a smaller pattern or get more memory by ordering the appropriate
hardware option.
Value Comments
0/1 This is the data (payload) bit. It is "unspecified" when burst (bit 2) is set to 0.
0 Always 0
0/1 1 = RF on
0 = RF off
For non–bursted, non–TDMA systems, to have a continuous signal, set this bit to 1 for all
bytes. For framed data, set this bit to 1 for on timeslots and 0 for off timeslots.
0 Always 0
1 Always 1
0 Always 0
0/1 To have the signal generator output a single pulse at the EVENT 1 connector, set this bit
to 1. Use this output for functions such as a triggering external hardware to indicate when
the data pattern begins and restarts, or creating a data–synchronous pulse train by
toggling this bit in alternate bytes.
0/1 0 = continue to next sequential memory address.
1 = end of memory and restart memory playback.
This bit is set to 0 for all bytes except the last byte of PRAM. To restart the pattern, set
the last byte of PRAM to 1.
Possible Cause
Keysight Signal Generators Programming Guide