Agilent Technologies E8257C PSG Manual de usuario descargar pdf (Pagina 7)

12. SYMBOL SYNC (Input connector)-

The CMOS compatible SYMBOL SYNC

connector accepts an externally

supplied symbol sync for vector

modulation applications. The expected

input is a TTL or CMOS bit clock signal.

13. DATA CLOCK The TTL/CMOS

compatible DATA CLOCK connector

accepts an externally supplied data-

clock input for digital modulation

applications. The expected input is a

TTL or CMOS bit clock signal where the

rising edge is aligned with the beginning

data bit. The falling edge is used to

clock the DATA and SYMBOL SYNC

signals.

14. DATA The TTL/CMOS compatible

DATA connector accepts an externally

supplied data input for vector modula-

tion applications. The expected input is

a TTL or CMOS signal where a CMOS

high is equivalent to a data 1 and a

CMOS low is equivalent to a data 0.

15. Q (Input connector) This connector

accepts an externally supplied, analog,

quadrature-phase component of I/Q

modulation.

16. I (Input connector) This connector

accepts an externally supplied, analog,

in-phase component of I/Q modulation.

7

8. LF OUTPUT This BNC connector is the

output for modulation signals generated

by the low frequency (LF) source func-

tion generator. This output is capable of

driving 3 Vp (nominal) into a 50 W load.

9. ALC INPUT This connector is used for

negative external detector leveling.

This connector accepts an input of

–0.2 mV to –0.5 V. The nominal input

impedance is 120 kW and the damage

level is +15 V.

10. RF OUTPUT This female 2.4 mm(f)

connector is the output for RF signals.

11. INTERNAL PULSE GENERATOR BNC

connectors GATE/PULSE TRIGGER

input – accepts input signal for external

fast pulse modulation. Also accepts

external trigger pulse input for internal

pulse modulation. Nominal impedance

50 W. Damage levels are 5 V

rms

and

10 V

peak

. VIDEO OUT – Outputs a signal

that follows the RF output in all pulse

modes. TTL-level compatible, nominal

source impedance 50 W. SYNC OUT –

Outputs a synchronizing pulse, nominally

50 ns width, during internal and triggered

pulse modulation. TTL-level compatible,

nominal source impedance 50 W.

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