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MODEL S1-1 |
FOUR, INDIVIDUAL, 200MHZ SCALERS
FEATURES:
FOUR INDIVIDUAL, 24 BIT SCALERS WITH OVERFLOW
- 200MHZ MINIMUM COUNTING SPEED
- INTERRUPT STRUCTURE FOR OVERFLOWS
- DISCRIMINATIOR INPUTS FOR RELIABLE COUNTING
- INDIVIDUAL INHIBIT INPUTS
APPLICATIONS:
HIGH SPEED EVENT COUNTING
JOERGER ENTERPRISES, INC. MODEL S1-1 is a Quad Scaler packaged in a
single width CAMAC module. This unit, in addition to offering the user four individual 24
bit, 200MHZ scalers also provides a useful interrupt structure. The individual overflow
flip-flops are "Ored" and will generate an interrupt signal on the "L"
line if the module is enabled. The overflow flip-flops themselves may be conveniently read
out on the dataway by a separate Read command. This allows the data word to be a full 24
bits and not 23 bits plus an overflow bit which is usually the case when overflow must be
read. This overflow structure is very useful in scaler systems. It will allow the user to
monitor all channels via their "L" lines for a scaler overflow and allow the
system to respond quickly if required. In addition, all four overflow flip-flops may be
read out using only one Read command. The four channels are independent and can be gated
individually using the four TTL inhibit inputs provided. These inputs are internally
biased high which is the open condition, to inhibit a channel this input is brought low.
SPECIFICATIONS: (for each channel)
| SIGNAL INPUTS: |
|
| PULSE REPETITION RATE |
0-200MPPS minimum |
| SENSITIVITY |
-500mv |
| INPUT IMPEDANCE |
50ohms, ± 10% dc coupled |
| PULSE WIDTH |
3nsec. minimum |
| PROTECTION |
± 50v transients |
| INHIBIT INPUTS: |
Each channel is individually gated via four front panel
connectors. They are TTL compatible and internally biased in the open condition, +2 volts
minimum, a signal of .8 volts or less will inhibit a channel |
| CARRY OUTPUTS: |
Provided internally for each channel, -1v into 50ohms |
| GATE SELECT: |
A locking toggle switch allows the gates to be controlled by
the front panel inhibit signals or by this signal "Ored" with the dataway
inhibit ( I ) |
CAMAC COMMANDS:
| COMMAND |
Q |
FUNCTION |
| 0x** |
1 |
Reads 24 bits of data onto Read lines 1-24. Resets overflow
at S2 |
| 114 |
1 |
Reads LAM requests on R1-4 |
| 2x |
1 |
Same as F0 and in addition resets channel to zero at S2 |
| 814 |
* |
Tests LAM (overflow) requests and if enabled generates a
response on the Q line |
| 9x |
|
Resets counter channel at S2 |
| 10x |
|
Resets overflow flip-flop at S2 |
| 2414 |
|
Disables LAM requests |
| 250-3 |
|
Increments each channel by one at S2 (independent of inhibit
gates) |
| 2614 |
|
Enables LAM requests |
| C(S2) |
|
Resets all channels if gate select switch is in appropriate
position |
| Z(S2) |
|
Resets all channels, overflow flop-flop, disables LAM
requests |
| I |
|
Inhibits all channels if gate select switch is in appropriate
position |
| Q |
|
A Q=1 is generated in response to F0, F1, F2, and F8 if an
overflow has occurred and the unit is enabled |
| X |
|
X=1 is generated for all valid commands |
| L |
|
An "L" signal is generated whenever an overflow has
occurred and the module is enabled, but not addressed |
** NOTE x=0-3 FOR CHANNELS 0-3
| CONNECTORS: |
LEMO RA00250, Mating Connectors F00250 |
| TEMPERATURE RANGE: |
0° C to 50° C |
| INDICATORS: |
"N" |
an LED is provided to indicate when the module is
addressed |
| "GATE LIGHTS" |
four LED’s are provided to indicate when the
counting gates are open |
| POWER REQUIREMENTS: |
800ma, +6v; 400ma, -6v |
| SIZE: |
#1 CAMAC module |
JOERGER ENTERPRISES, INC 166 Laurel Road, East Northport, NY 11731
USA
| 1-631-757-6200 |
(Fax 1-631-757-6201) |
www.joergerinc.com |
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