Specifications

Model E8 Series Operation Manual
E8 Series A5 Manual 9 October 2008
Page 12 of 12
PL Phase lock loop
PL? Returns current status of PLL
aaaa bbbb cccccccc dddd eeee
aaaa last value of I sample (filtered), 2s complement, 16 bit
bbbb last value of Q sample (filtered), 2s complement 16 bit
* cccccccc last value of PLL integrator (32 bit integer)
dddd Coarse tune DAC 16 bit integer
eeee Fine tune DAC 16 bit integer
PLIcccccccc Write new PLL integrator
PLCdddd Write new coarse tune DAC
PLFeeee Write new fine tune DAC
PL+ Enter command PL? into repeat stack
PD Phase detector
PD? Returns phase detector parameters
aaaa bbbb cccc dddd eeee
aaaa Last phase result, 2s complement
bbbb Last mod[I] +mod[Q]
cccc 2.5V reference (filtered)
dddd mod (phase result) (filtered) lsb=3.05ps
eeee mod(freq offset) (filtered) lsb = 2.33E-14
PD+ Write PD? to command repeat stack
EU EEPROM
Update (backed up values)
SR Software Reset
ER EEPROM read
ERCaabb Returns bb bytes from starting address aa as ASCII characters
ERNaabb Returns bb bytes from starting address aa as hexadecimal numbers (character
pairs)
EW EEPROM write
EWCaabbccccc------c
Writes bb characters to starting address aa. Correct number of characters must be included in string
EWNaabbcccc------c
Writes bb bytes to starting address aa. Character pairs cc etc. are interpreted as hexadecimal
numbers.
RI Repeat Interval
RI? Returns command repeat interval
aa
aa 8 bit command repeat interval multiplier. Range 1 to 255. Command repeat interval is 50ms x
aa
RI0aa Write new command repeat interval
RID Cancel command repeat and clear command repeat stack