SRS Labs SR430, Руководство пользователя

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SR430 Multichannel Scaler
Protection 15 VDC, 100 V for 1 µs
INTERNAL TIME BINS
Bin width 5 ns, 40 ns, 80 ns, 160 ns, 320 ns, 640 ns, 1.28 µs, 2.56 µs, ...
10.486 ms. (10 ns or 20 ns bins are not available)
Accuracy 1 ns + 20 ppm of bin width
Jitter (rms) 100 ps + 10 ppm of delay from SYNC/BUSY output (Time bins are
synchronous with the SYNC/BUSY output).
Indeterminacy 2.5 ns pk-pk with respect to the TRIGGER input
Insertion delay 45 ns from trigger to first bin. Rising edge of SYNC/BUSY output oc-
curs at the beginning of the first bin. However, signal pulses arriving
25 ns after the trigger will be counted in the first bin.
EXTERNALLY CLOCKED TIME BINS
EXT BIN CLK Input Rising edge triggers next time bin.
Maximum frequency 4 MHz (250 ns minimum bin width)
Minimum pulse width high 100 ns
Minimum pulse width low 100 ns
Insertion delay Rising edge of SYNC/BUSY output occurs at first rising edge of EXT
BIN CLK after TRIGGER. The beginning of the first bin occurs at the
same time. (Time bins are synchronous with the SYNC/BUSY out-
put).
COUNTERS/ACCUMULATION
Bins per record 1k to 16k in 1k increments (1024 to 32,704 including Trigger Offset)
Maximum count rate 100 MHz
Maximum count 32,767 per bin per trigger
Records per accumulation 1 to 64k (or free run)
Maximum accumulation 32,767 per bin in Add mode, ±16,383 per bin in Toggle, or External
mode.
Add/Subtract Records may be added or added an subtracted (Toggle between add
and subtract every N triggers where N is programmable). External
subtract input may also control the toggle.
TRIGGER RATE
Minimum period between triggers Tp=Record time + Accumulation time + Overhead
=(Number of Bins X Bin Width)+(Number of Bins X 250 ns)+150
µs
SYNC/BUSY output is high for Tp after each trigger. When
SYNC/BUSY returns low, the next record may be triggered. Triggers
received while SYNC/BUSY is high are ignored.
OUTPUTS
DISC Nim level into 50 Ω. Low whenever the signal input exceeds the dis-
criminator level with the correct slope.
SYNC/BUSY TTL level. Rising edge is synchronous with the first time bin of each
record. Use this edge to trigger the experiment. Remains high until
re-armed for next trigger.
BIN CLK OUTPUT Nim level into 50 Ω. Each transition is a bin boundary. Active only
while a record is being acquired. Timing skew relative to the DISC
output is less than 2 ns.
TOGGLE TTL level. Indicates whether the next record will be added to or sub-
tracted from the accumulation. (Internal toggle mode)
TEST 50 MHz Nim output into 50 Ω. Use to test counters.
AUX1, AUX2 General purpose analog outputs
Full scale ±10 VDC
Resolution 12 bits (5 mV)