For the ver y latest specif ications visit

w w w.aeroflex.com

F

FR

RE

EQ

QU

UE

EN

NC

CY

Y S

ST

TA

AN

ND

DA

AR

RD

D

Internal Frequency Standard (OCXO)

Frequency

10 MHz

Temperature Stability

Better than 5 parts in 108, 0 to 55°C

Ageing Rate

Better than 1 part in 107, per year, after 1 month continous use

Warm up

Less than 10 minutes to within 2 parts in 107 at 20°C

External Frequency Standard Input

Frequency

1, 2, 5 and 10 MHz

Input Level

Greater than 1 V peak to peak

Input Impedance

Nominally 1 k

Ω

G

GE

EN

NE

ER

RA

AL

L

Keyboard and Display

Logical color coded keyboard with bright high resolution fast LCD

Display Size

160 x 85 mm

RS-232C

RS-232C interface is provided for printing and remote instrument con-

trol

Connector

9 way female ‘D’ Type

POWER REQUIREMENTS

AC Supply Voltage

100 - 240 V~ / 108 - 118 V~ (Limit 90 - 264 V~/98 - 132 V~)

AC Supply Frequency

50 - 60 Hz / 50 - 400 Hz (Limit 45 - 66 Hz / 45 - 440 Hz)

Maximum AC Power

190 VA

DC Supply Voltage

11 to 32 V

Maximum DC Power

100 W

CALIBRATION INTERAL

2 years

ELECTROMAGNETIC COMPATIBILITY

Conforms with the protection requirements of Council Directive

89/336/EEC. Complies with the limits specified in the following stan-

dard:

IEC/EN61326-1 : 1997, RF Emission Class B, Immunity table 1,

Performance Criteria B

Safety

Conforms with the requirements of EEC Council Directive 73/23/EEC

(as amended) and the product safety standard IEC / EN 61010-1 :

2001 + C1 : 2002 + C2 : 2003 for Class 1 portable equipment, for

use in a Pollution Degree 2 environment. The instrument is designed to

be operated from an Installation Category 2 supply.

CALIBRATION INTERVAL

2 years

ENVIRONMENTAL

Rated Range of Use

0 to 50°C and up to 95% relative humidity at 40°C

Storage and Transport

Temperature

-40 to +71°C

Altitude

Up to 2500 m (pressurised freight at 27 kPa differential)

DIMENSIONS AND WEIGHT

Height

178 mm (7 in)

Width

380 mm (15 in)

Depth

457 mm (18 in)

(including handle, feet and covers)

Weight

Less than 12 kg (standard version)

O

OP

PT

TIIO

ON

NS

S A

AN

ND

D A

AC

CC

CE

ES

SS

SO

OR

RIIE

ES

S

600

Ω

Ω MATCHING UNIT (OPTION 1)

INPUT CIRCUIT

Impedance

600

Ω

Return Loss

>21 dB at 1 kHz

Frequency Response

±0.5 dB at 200 Hz to 5 kHz,

±2 dB at 100 Hz to 20 kHz

Accuracy of 1:1 input:output ratio

±1% at 1 kHz ± accuracy of 2945A, 2946A or 2948

Maximum Input

5 V RMS maximum at 200 Hz to 5 kHz

3 V RMS maximum at 100 Hz to 20 kHz

OUTPUT CIRCUIT

Impedance

600

Ω

Return Loss

>21 dB at 1 kHz

2948iss15.qxd

01/Dec/2004

10:07

Page 9