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MODEL
ADC32A |
32 CHANNEL, SCANNING ADC
AND DATA LOGGER
FEATURES:
HIGH SPEED ADC, 10m SEC PER CHANNEL
- 12 BIT RESOLUTION WITH SAMPLE AND HOLD INPUT
- INSTRUMENTATION AMPLIFIER, PROGRAMMABLE GAIN PER CHANNEL
- 32 DIFFERENTIAL INPUT CHANNELS
- ACTIVE CHANNELS PROGRAMMABLY SELECTED
- CONTINUOUS, BURST OR MULTIBURST MODES PROGRAMMABLY SET
- ACTIVE MEMORY SIZE PROGRAMMABLE UP TO 2MEGA WORDS
The JOERGER ENTERPRISES, INC. MODEL ADC32A is a scanning 32 channel
differential analog input module capable of operating as an ADC or data logger. To satisfy
a wide range of applications the module is completely programmable. To match the module to
the application, the number of active channels can be programmed along with the active
memory size. This allows only the channels of interest to be scanned and stored. The
module can be set for continuous scan or for one of two triggered modes of operation;
single burst or multiburst For data logging up to two megawords of memory is available.
The standard input is bipolar, ± 10 volts, as an option it can
be set for unipolar operation. To better match the input to the ADC range, a programmable
instrumentation amplifier is provided with gain selections of 1, 2, 4, or 8. The gains can
either be set for each individual channel or one gain can be used for the complete module.
To simplify data readout, each channel is read out along with the gain of the amplifier
for that channel. Data can be read out directly or in a block mode with offset binary
coding. Direct readout is accomplished using F0 and F1 with the appropriate subaddress.
This can be done while the unit is active so that data can be read on the fly. The block
readout is available by using F2. To insure good noise rejection and channel isolation,
the analog section is carefully grounded and the power lines well filtered. Input
filtering on the analog inputs is available as an option.
SPECIFICATIONS:
| CHANNELS |
32 Differential Inputs |
| ACTIVE CHANNELS |
1, 2, 4, 8, 16, 32 Channels, Programmably Set |
| GAIN SELECTION |
1, 2, 4, 8 Individually Set Per Channel |
| INPUT RANGE |
Bipolar ± 10V Standard, Unipolar
+10V Optional |
| RESOLUTION |
12 Bits |
| ACCURACY |
± .024% |
| APERTURE JITTER |
150psec. |
| INPUT IMPEDANCE |
100M Ohms Minimum |
| CONVERSION TIME |
10m sec. Per Channel Maximum |
| ACTIVE MEMORY |
Selectively Set to 2M Words Maximum, 128K Standard |
| SCAN TRIGGER INPUT |
External Negative Going TTL |
| EXTERNAL CLOCK INPUT |
External Negative Going TTL |
CAMAC COMMANDS:
| 0.Ai |
Reads data from Channels 1-16 on R1-12 and amplifier gain on
R15, 16 |
| 1.Ai |
Reads Data from Channels 17-32 on R1-12 and amplifier gain on
R15, 16 |
| 20 |
Reads the active memory in a block mode, data on R1-12, gain
on R15, 16 |
| 30 |
Reads module identity |
| 40 |
Reads module status; active channels, active memory size,
operating mode, module active, internal or external clock and common or individual channel
gain select |
| 80 |
Tests LAM, Q=1 if LAM is set and enabled |
| 90 |
Resets module to 32 channel scanning ADC, with 32 word
memory, Common
Gain = 1, internal clock and continuous scan (ADC32 operating mode) |
| 100 |
Resets LAM |
| 160 |
Writes module status; sets number of active channels, size of
active memory, operating mode, internal or external clock, activates single gain mode for
all channels and sets gain |
| 17.Ai |
Sets gain on Channels 1-16 with data on W1, 2 |
| 20.Ai |
Sets gain on Channels 17-32 with data on W1, 2 |
| 240 |
Disables LAM response |
| 241 |
Disable trigger override, lam must be reset to accept trigger
(only if enabled) |
| 250 |
When in burst mode and not active, resets LAM FF and triggers
scan. |
| 251 |
Stops cycle, resets counter |
| 260 |
Enables LAM response |
| 261 |
Enable trigger override (trigger will clear LAM and start
burst cycle) |
| 270 |
Tests LAM, Q=1 if LAM is set |
| 271 |
Tests module busy, Q=1 if module is in a triggered data
acquisition cycle |
| X |
An X=1 for all valid commands |
| Q |
A Q=1 for F0, 1, 3, 4 and in response to F2, 8, 16, 17, 20,
25 and 27 |
| L |
An L response is generated in the burst mode when the active
memory has been filled, in multi-burst mode when the modules complete memory is full |
| Z |
Resets module (ADC32 Emulation) |
| Power Up |
Resets module (ADC32 Emulation) |
| INDICATORS: |
"N" Module is addressed |
| "ACTIVE" Module is in a data acquisition cycle |
| POWER REQUIREMENTS: |
+6v, 325ma; +24v, 20ma; -24v, 20ma |
| SIZE: |
Single width CAMAC module |
| CONNECTORS: |
DATA -DC37P; TRIGGER, CLOCK -LEMO RA00250 |
| TEMPERATURE RANGE: |
20° C to 50°
C |
| OPTIONS: |
1. Unipolar input range 0 to +10v
2. Memory capacity, 128K (standard), 2M
3. Input filters |
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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