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16 independent NIM to ECL/NIM and ECL to NIM/ECL channels
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NIM fan-out of two
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300 MHz maximum operating frequency
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2 COMMON IN input with a fan-out of 16 NIM and 8 ECL
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I/O delay from 1.5 to 3.5 ns, depending on input type
The Mod. N638 is a standard NIM module housing 16 independent logic level translators.
Each of the 16 channels accepts a NIM or an ECL signal and provides two NIM and one ECL outputs. The NIM and ECL inputs of each channel are ORed prior to fan-out.
The maximum operating frequency is 300 MHz.
Two couples of front panel input bridged connectors accept two COMMON IN NIM signals; each common signal allows the use of the module as a fan-out of 16 NIM and 8 ECL signals.
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Compare
|
Image
|
Name
|
Package
|
No. Of Sections
|
Function
|
Inputs per Section
|
Outputs per Section
|
I/O delay (ns)
|
Input Bandwidth (MHz)
|
In Conn.
|
Out Conn.
|
|
|
DT5495 |
Desktop |
1 |
Depending on board configuration |
64 ECL/PECL/LVDS +2 bidirectional NIM/TTL (expandable up to 162) |
32 LVDS+2 bidirectional NIM/TTL (expandable up to 130) |
n/a |
Section A/B: 200, Section C/D: 250 |
Robinson Nugent Flat/ LEMO |
Robinson Nugent Flat/ LEMO |
|
|
N89 |
NIM |
2 |
NIM to TTL; TTL to NIM |
4 + 4 |
4 + 4 |
< 10 |
60 / 40 |
LEMO |
LEMO |
|
|
V538A |
VME |
1 |
NIM to ECL/NIM; ECL to NIM/ECL |
8 NIM / 8 ECL |
2x8 NIM / 2x8 ECL |
< 3 |
300 |
LEMO / Std. Flat |
LEMO / Std. Flat |
|
|
V2495 |
VME |
1 |
Depending on board configuration |
64 ECL/PECL/LVDS +2 bidirectional NIM/TTL (expandable up to 162) |
32 LVDS+2 bidirectional NIM/TTL (expandable up to 130) |
n/a |
Section A/B: 200, Section C/D: 250 |
Robinson Nugent Flat/ LEMO |
Robinson Nugent Flat/ LEMO |
|
|
N638 |
NIM |
2 |
NIM to ECL/NIM; ECL to NIM/ECL |
8 NIM / 8 ECL |
2x8 NIM / 8 ECL |
< 3.5 |
300 |
LEMO / Std. Flat |
LEMO / Std. Flat |
Technical Specifications
|
Packaging |
1-unit wide NIM module |
|
NIM Inputs |
NIM logic levels, 50 Ω impedance |
|
ECL Inputs |
ECL logic levels, 110 Ω impedance |
|
COMM inputs |
NIM Level, high impedance |
|
Reflections |
< 3%, tested with NIM input signals featuring: 0.8 ns rise/fall time, 50 ns FWHM, 1 KHz frequency |
|
NIM A, B outputs |
NIM levels on 50 Ω impedance |
|
ECL outputs |
Differential ECL levels on 110 Ω impedance |
|
Output rise/fall time |
< 0.5 ns (measured on NIM output) |
|
Min. input FWHM |
1.65 ns |
|
Max. input frequency |
300 MHz (NIM), 250 MHz (ECL), 200 MHz (COMM) |
|
I/O delay (ECL to NIM) |
<2 ns |
|
I/O delay (NIM to ECL) |
<3 ns |
|
I/O delay (COMM to ECL) |
<3.5 ns |
|
I/O delay (COMM to NIM) |
<3.5 ns |
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