Channel to Channel Phase Match
Using different filter selections (Wideband/Bessel IIR/Butterworth IIR/etc.) or different filter bandwidths will lead to phase mismatches between
channels.
Wideband
1 kHz Sine wave
Channels on card
0.01 deg (30 ns)
GN3211 Channels within mainframe
0.01 deg (30 ns)
Bessel IIR, Filter frequency 2 kHz @ 20 kS/s
Channels on card
0.01 deg (30 ns)
GN3211 Channels within mainframe
0.01 deg (30 ns)
Butterworth IIR, Filter frequency 5 kHz @ 20 kS/s
Channels on card
0.01 deg (30 ns)
GN3211 Channels within mainframe
0.01 deg (30 ns)
GN3211 channels across mainframes
Defined by synchronization method used (None, IRIG, GPS, Master/Slave, PTP)
On
-
board Memory
Per card
200 MByte (100 MSample @ 16 Bits Storage)
Organization
Automatically distributed amongst channels enabled for storage or real
-
time calculations
Memory diagnostics
Automatic memory test when system is powered and not recording
Storage sample size
16 bits, 2 bytes/sample
Digital Event
(1)
Digital input events
16 per card
Levels
TTL input level, user programmable invert level
Inputs
1 pin per input, some pins are shared with Timer/Counter inputs
Overvoltage protection
±
30 V DC continuously
Minimum pulse width
100 ns
Maximum frequency
5 MHz
Digital output events
2 per card
Levels
TTL output levels, short circuit protected
Output event 1
User selectable: Trigger, Alarm, set High or Low
Output event 2
User selectable: Recording active, set High or Low
Digital output event user selections
Trigger
1 high pulse per trigger (on every channel trigger of this card only)
12.8 µs minimum pulse width
200 µs
±
1 µs
±
1 sample period pulse delay
Alarm
High when alarm condition is activated, low when not activated (alarm conditions of this
card only)
200 µs
±
1 µs
±
1 sample period alarm event delay
Recording active
High when recording, low when in idle or pause mode
Recording active output delay of 450 ns
Set High or Low
Output set High or Low; can be controlled by Custom Software Interface (CSI) extensions;
delay depends on specific software implementation
External start
Rising/Falling edge selected by user starts a new recording
External stop
Rising/Falling edge selected by the user stops the recording
(1)
Only if supported by mainframe
GEN3i
I3763-3.1 en HBM: public
711
