4900 Broadcast studio clocks with 50mm (2") or 20mm (0.8") digits and EBU/SMPTE synchonisation option (LTC)

Wharton 4900 series digital studio clocks for radio and TV bradcasting

4900x.05.G.S, 4900x.02.G.S & 4900x.02.R.S Studio clocks showing the three analogue seconds indication modes

blue, green&red, red and yellow/amber digit color options for Wharton 4900 series studio clocks

4900x.05.B, 4900.05.GR, 4900.05.R and 4900.05.Y studio clocks with blue digits, green digits with red 5 second markers, red digits and yellow/amber 50/30mm (2"/1.2") high digits.

The 4900x.020 model with 20mm (0.8") digits is only available with green or red digits and same colour markers.

 4900x.05 - 15m (45ft), 4900x.020 - 7m (20ft)  more

  • This range was developed for use in the broadcast industry but is also an excellent showpiece for receptions and meetings rooms and any control application where progress towards a specific seconds count is of particular importance.
  • These unique digital clocks have a multi-format outer analogue seconds ring as well as hours, minutes and seconds digits.
  • Optional signal interfaces enable the clock to synchronise with NTP, EBU, IRIG and other precision coded signal time sources.
  • The 4900x.05 model has a 12 or 24-hour time display with ultra-reliable, 50mm (2") high dot matrix characters for hours and minutes with 30mm (1.2") digits for seconds. You have a choice of blue, green, red or yellow/amber digits. The smaller 4900x.02 version is available with 20mm (0.8") high red or green digits.
  • You can select one of three analogue seconds indication modes:
    • Showing accumulating seconds markers
    • Showing three trailing seconds markers
    • Showing a single seconds marker
  • You can choose a display of time only, alternating time and temperature (requires extra cost temperature sensor) or alternating time and date.

All Wharton digital clocks have many user-selected modes of operation:

  • E and NE versions can be used in stand-alone applications using their internal time references.
  • Every standard digital clock has rear connections to enable time synchronisation using one of a wide selection of time code protocols from a Wharton 5000 series master clock or suitable third party time reference.
  • You can synchronise individual clocks with a precise satellite-based atomic time reference via a control message from a Wharton 488HS series GPS or GLONASS time signal receiver.
  • N and NE versions can be controlled and synchronised to time via their 10/100Base-t Ethernet NTP connection to your existing network with accurate time information provided by a local or internet time server for simple, low-cost installation and control.

Stopwatch operation

  • Wharton 4000 series digital clocks have time digits freely switchable between the display of time-of-day and the display of multifunction stopwatch or countdown time.
  • The stopwatch and countdown timer functions are controlled by the IR handset supplied, by an optional dedicated switch panel or by user-supplied voltage free contacts.
  • The following stopwatch and countdown timer functions are user programmable:
    • Stopwatch display modes
    • Stopwatch display resolution
    • Stopwatch count direction
    • Stop/start and hold switch actions
    • Countdown start count
    • Using external, voltage free, switch contacts - E & NE versions only
    • Network stopwatch mode - network versions only
  • Further information about stopwatch & countdown timer operation
  • The high-quality clock enclosures have a silver or black finish. Alternative colours or finishes are available at additional cost.
  • Base model clocks are suitable for freestanding or wall mounting using the multi-angled brackets supplied. Mounting options include cases for flush wall mounting and single or double-sided clocks with mounting supports for ceiling suspension.
  • 110-230V AC, 12 or 24V DC or PoE (Power over Ethernet) power supply options.
  • All Wharton digital clock products are designed, manufactured and tested to International Quality and Performance Standards.
  • Unrivalled free product lifetime technical support with unlimited advice and information to the original user for the life of the digital clock. Many previous models are still in service more than 15 years after first supply.
model size - w x h x d weight
4900x.02 144 x 144 x 58mm  5.7" x 5.7 x 2.3" 0.9kg - 2lb
4900x.05 300 x 300 x 58mm 11.8" x 11.8" x 2.3" 2.5kg - 5.5lb
sizes and weights are for .S. single-sided wall mounted clocks
order code example
4900N.05.Y.FP.UK.Silver

A - model: 4900
B - version (network): N
C - display height (50mm & 30mm): .05
D - display colour (yellow/amber): Y
E - case style (flush panel) : .FP
F - power supply (UK): .UK
G - case colour (silver): .Silver
A - model code
six digit display 4900
B - version  
non-network version with enhanced features E
network version N
network + enhanced features NE
C - display height  
4900x.02: 20mm - 0.8" .02
4900x.05: 50mm & 30mm - 2" & 1.2" .05
D - display colour  
blue (not available on 4900x.02) - please note that blue illuminated characters can appear slightly out of focus to some people due to variations in the response of the human eye to blue light and typically have a shorter practical viewing distance than red, green or yellow/amber characters. .B
green .G
green digits & red five second markers (not available on 4900x.02) .GR
red .R
yellow/amber (not available on 4900x.02) .Y
E - case style  
surface mounting case for wall mounting .S
flush mounting case for use in a panel with rear access .FP
flush mounting case supplied with mounting box .FB
single-sided ceiling suspended case .SS
double-sided ceiling suspended case .DS
F - Power supply  
internal PSU 110-240vac 50/60Hz (standard)  
with Australian mains lead .AU
with EU mains lead .EU
with UK mains lead .UK
with US mains lead .US
24v DC power supply .24vdc
48v DC power supply .48vdc
IEEE 802.3af-2003 Class 3 .POE
G - case colour  
black .black
silver .silver
RAL or other standard case finish .RAL9010