The Model 7187/H TDC implements 16 channels of Time to Amplitude Conversion (TAC), each with its own START and STOP, followed by a digital processing section and CAMAC interface in a double width CAMAC module. To minimize data readout time, the module performs a sparse data function. Channels can be individually programmed with pedestal correction and both lower and upper level thresholds. Digitization starts following release of the GATE input. It may be delayed by a user-programmable amount to allow time for derivation of fast CLEAR signals.
Channels that meet the sparsification requirements will have corresponding bits set in the Hit Register. Subsequent events will be ignored until the Hit Register is cleared either by completing a sparse read of the module or via front panel fast CLEAR or CAMAC Clear commands.
Four user selectable time ranges are provided in a given configuration:
| Standard Configuration | Alternate Configuration | |||
| Range | Resolution | Range | Resolution | |
| 100 nSec | 25 pSec | 1 µSec | .25 nSec | |
| 200 nSec | 50 pSec | 2 µSec | .50 nSec | |
| 400 nSec | 100 pSec | 4 µSec | 1.0 nSec | |
| 800 nSec | 200 pSec | 8 µSec | 2.0 nSec | |
Note: All channels need not have the same scale factors. Custom ranges are available when ordering.
Download actual Specifications in . PDF format for this model number or go to our Download area where all the data sheets are available and are listed by model number .
Back to the Product Selection Page or the Phillips Scientific Home Page