background image

 

 

Document type: 

Title: 

Revision date: 

Re vision: 

User's Manual (MUT) 

N1145 Quad Scaler and Preset Counter/Timer 

05/11/2003 

 
 
 

NPO: 

Filename: 

Number of pages: 

Page: 

00115/01:N1145.MUTx/00 

N1145_REV0.doc 

14 

 

1.2.  Front panel 

Fig. 1.1 – Mod. N1145 Front Panel  

SGL

REP

QUAD SCALER AND

PRESET COUNTER-TIMER

LOAD

CONNECTOR

MODE SELECTION

SWITCH

MODE SELECTION

SWITCH

MODE SELECTION

SWITCH

MODE SELECTION

SWITCH

END MARKER
CONNECTOR

SINGLE/REPEAT

SWITCH

RESET

PUSHBUTTONS

LOAD

PUSHBUTTON

CH 1

CH 2

RESET

IN

IN

IN

IN

IN

OUT

END MARKER

COUNTER

TIMER

1 us

1 ms

LOAD

M o d .    N 1145

+

+

+

+

+

+

+

-

-

-

-

-

-

-

CH 1

GATE

NORMAL

GATE

GT+CLR

CH 2

NORMAL

GATE

GT+CLR

GATE

CARRY

CH 3

GATE

NORMAL

GATE

GT+CLR

CH 4

GATE

CARRY

NORMAL

GATE

GT+CLR

CH 4

CH 3

INPUT

CONNECTOR

OUTPUT

CONNECTOR

SOURCE SELECT

SWITCH

FREQUENCY

SELECT SWITCH

SGL

RPT

QUAD SCALER AND

PRESET COUNTER / TIMER

INPUT

CONNECTOR

GATE BRIDGED

CONNECTORS

INPUT

CONNECTOR

GATE BRIDGED

CONNECTORS

INPUT

CONNECTOR

GATE

CONNECTOR

CARRY

CONNECTOR

GATE

CONNECTOR

CARRY

CONNECTOR

INPUT

CONNECTOR

RESET

CONNECTOR

THUMB

SWITCHES

Содержание N1145

Страница 1: ...Technical Information Manual 5 November 2003 Revision n 0 MOD N1145 QUAD SCALER AND PRESET COUNTER TIMER NPO 00115 01 N1145 MUTx 00...

Страница 2: ...he User accident or any abnormal conditions or operations CAEN declines all responsibility for damages or injuries caused by an improper use of the Modules due to negligence on behalf of the User It i...

Страница 3: ...AGING 6 2 1 POWER REQUIREMENTS 6 2 2 FRONT PANEL I O CONNECTIONS 6 2 3 FRONT PANEL SWITCHES 7 2 4 TECHNICAL SPECIFICATION TABLE 8 3 PRINCIPLES OF OPERATION 9 3 1 SECTIONS 1 TO 4 9 3 2 SECTION 5 9 4 OP...

Страница 4: ...imer The counters can perform different operations and can be variously interconnected thereby making the module a flexible and powerful tool for several applications involving time frequency and rati...

Страница 5: ...SINGLE REPEAT SWITCH RESET PUSHBUTTONS LOAD PUSHBUTTON CH1 CH 2 RESET IN IN IN IN IN OUT END MARKER COUNTER TIMER 1 us 1 ms LOAD M o d N 1145 CH 1 GATE NORMAL GATE GT CLR CH 2 NORMAL GATE GT CLR GATE...

Страница 6: ...d Free port must be terminated on 50 SECTIONS 2 AND 4 INPUTS 1 accepts both NIM and TTL signals 50 impedance GATE one NIM TTL input 50 impedance CARRY one NIM output Generates a pulse when counter has...

Страница 7: ...HES Section 1 4 Function they allow to select the operating mode see 3 1 RESET PUSHBUTTONS Section 1 4 Function they allow to clear the relevant section see 3 1 SOURCE SELECTION SWITCH Section 5 Funct...

Страница 8: ...and 3 2 bridged high impedance NIM TTL inputs Section 2 and 4 50 impedance NIM TTL input Control inputs Load 1 NIM TTL input loads counter with value set on thumb wheel switches min FWHM 3 ns Carry Se...

Страница 9: ...NIM TTL input must be terminated with a 50 impedance at the other port Sections 2 and 4 have one 50 GATE NIM TTL input and one CARRY NIM output The CARRY output generates a NIM pulse when the counter...

Страница 10: ...rt the counter a new load operation is required Actually when using the LOAD button the counter can be restarted even BEFORE zero is reached The LOAD NIM TTL signal is disabled during counting After a...

Страница 11: ...al MUT N1145 Quad Scaler and Preset Counter Timer 05 11 2003 0 NPO Filename Number of pages Page 00115 01 N1145 MUTx 00 N1145_REV0 doc 14 11 Fig 3 1 Section 5 Timing Diagram 1 0 2 0 Trimmer adjustable...

Страница 12: ...ee sections for instance 1 with 3 and then 3 with 2 or 4 via cables in order to send them a single external GATE input The OUT signal of section 5 can be used as the GATE input to the counters The dou...

Страница 13: ...t the END MARKER output or transition at the OUT ports An absolute delay can be obtained with section 5 in TIMER Mode The duration of the delay is Td N actually the time interval between the LOAD sign...

Страница 14: ...0 doc 14 14 The uncertainty of the measurement of an absolute time delay is therefore equal to the clock period For frequency measurements it is i max min Mc N Mc 1 N 1 N where i is the absolute frequ...

Отзывы: