Keysight Signal Generators Programming Guide 343
 Creating and Downloading User–Data Files
User File Data (Bit/Binary) Downloads (E4438C and E8267D)
1 7 1093 -  1249 0/1 (don’t care) 0 0
2 0 1250 -  1405 0/1 (don’t care) 0 0
2 1 (on) 1406 -  1561 set by GSM standard (42 bits) & 
remaining bits of user file
1 (on) 0
2 2 through 6 1562 -  2342 0/1 (don’t care) 0 0 (off)
2 7 2343 -  2499 0/1 (don’t care) 0 1 (1 in offset 
2499 only)
Frame Timeslot PRAM Word 
Offset
Data Bits Burst Bits Pattern Reset Bit