General Description TW 5250 • TW 3500 • TW 1750
1-8 Elgar TrueWave
1.11 OTHER STANDARD FEATURES
•
1- to 3-Phase Programmable
•
IEEE 488.2 Interface
•
SCPI Protocol
•
Waveform Trigger Output
(1 Meg
Ω
Load Drive; positive edge is at 0° ±30
µ
s, 0 to 5V logic)
•
SYNC OUT. User programmed for:
Cycle Start, all cycles
For loads
≥
2 k
Ω
: Vout
≤
1V Low State; Vout
≥
2.4V High State;
Negative edge is at 0° ±30
µ
s.
•
CLOCK/LOCK
CLOCK
pulses at programmed frequency for loads
≥
2 k
Ω
Vout
≤
1V Low State;
Vout
≥
2.4V High State. Negative edge is at 0° ±30
µ
s.
LOCK
locks output to input 'TTL' frequency; signal needs to supply pull down
current of 15 mA with voltage drop of
≤
0.6V; no pull up needed. Negative edge
is at 0° ±30
µ
s.
•
LOCK Specifications
Frequency range is 40.00 Hz to 500.00 Hz.
Tracking range is ±10% of programmed center frequency.
Duty cycle is 50% ±10%.
Slew rate is .02% of input frequency/second, maximum, which produces a
maximum phase shift of 5° from the lock input falling edge to the output rising
edge.
The rising edge of the output will be locked to the falling edge of the lock input
and will have less than a 30
µ
sec propagation delay.
Maximum output jitter when locked is <1% of lock input period.
PLL lock is achieved in <5 seconds.
